Protection against corrosion of iron and steel in structures—Zineand aluminium coatings—Guidelines
Some standard content:
GF/T19.355—2003 This standard is revised! ?3:! To the steel structure of the weak German medicine protection inspection of aluminum magic layer double English version! ,
This standard is a new draft of IS4713:19 and a series of modifications have been made. The foreword of S01713 has been cancelled. The preparation record of S01471$2A has been cancelled. The international standard has been issued by the European standard. "This standard" is used instead of "this international standard": the Chinese standard that cites the international standard is used! . The national standard GB/T11373 Hot spray cleaning will be included in the table of pretreatment of the Chinese industry standard H55 new iron parts powder zinc plated steel parts and the appendix card document Appendix A and Appendix B of this standard are scientific appendices. This standard is subject to the National Standards and Technical Committee of the State Council. The responsible drafting unit of this standard is Wuxi Materials Protection Research Institute, and the participating units of this standard are Wuxi Tianyuan Chemical Co., Ltd. The main parties of this standard are Yong, Ji, Li, Ying, and Li. 1. Guidelines for corrosion protection of steel structures, zinc and aluminum coatings, CB/T19355-2003, which provides a guide for steel structural parts (including connecting parts). The protective cover of the steel or steel resistant steel is a kind of protective cover. This standard is applicable to the heat treatment or cold forming of the steel, but these general principles are applicable to other products (galvanized layer, machine zinc layer, non-galvanized layer, etc.). The protection step involves: 1) suitable standard work; 2) design requirements; 3) use of bad conditions. These sections reflect the initial growth of aluminum or zinc coatings and the effect of subsequent oil or heat treatment. These indicators provide a necessary construction for commercial safety, and have no sales book and sound layer of low-maintenance - anti-corrosion - strong follow-up - meaning (15012S44-5 for films.
Each type of quality problem only requires low-maintenance layers, which makes people formulate their own corresponding cup pain. For specific products that are used in the industry and become part of the product (such as needles, complex and solid, ball and fast tubes, etc.), the requirements of the covering layer are not missing. Although the products are slightly out of the scope of this standard,
2. Normative referenced documents
The following documents are referenced in this standard and become the clauses of this standard. Any document with a sufficient period of time, its revision list (including errata) or your subscription is not suitable for this standard. However, all the research done to help this standard reach a consensus is to check and use the The latest version of the document is applicable to this standard: GB/9793 Other metal coatings on machine caps except zinc, aluminum and co-alloys (E12C63) GB/9799 Zinc electroplated coating on flat steel e2031G312331 Definition of zinc and other materials for machine rooms e04GB/T139.2-2002 Technical requirements for hot-dip galvanized steel products (MUFS014671999)
IS04998 Structural carbon plate continuous hot dip zinc IS223 Classification of gold and alloys for atmospheric separation IS2+-5 Color wave and clear adjustment of structural protective coatings This case protects against two parts: Protective system 10142 Cold action low-flammable steel plate and steel strip reverse heat evaluation specification ENi047 continuous uniform steel strip continuous diameter zinc chain delivery control specification EY10240 radiation joint internal and external protection polyester film white dynamic chemical plant heat not enough detailed specification 3 technical terms and definitions
the following terms. Definitions must be given to GE312-2002, GBTG763GB/T12334 for the definition of H applicable technical standards: 3.1
atmospheric magic oil almuspheritcorroslou scene between 55 and 0% of the atmosphere caused by the magic test. 1
GE/T19355-2003
high temperature elevatedenperatures
s0 and 150 between the temperature.
Abnormal exposure
Under some natural conditions, the corrosion resistance is strengthened and (or>the double protection system puts forward higher requirements 3.4
First maintenance lifelofirstnalalenaneuThe time from the initial case to the moment when the protective performance of the original layer decreases and it must be repaired to maintain its protective effect on the substrate:
4 Materials
4.1 Steel matrix material
Copper can be hot-rolled and cold-formed: Hot rolling has been used to produce angle-shaped, "industrial" base, "1" type natural components and other components, some smaller components, such as: lattice rows, steel cross sections and pre-colored steel plates are cold formed. Steel is an iron, carbon and other elements are added according to the performance requirements: the metallurgical and chemical composition of the composition will also have a great influence on the thermal protection performance of the coating: but for the thermal spraying, the chemical composition, especially the silicon content, is reduced (G/T 13912-3602). Cast iron and plated iron have different metal compositions and chemical compositions. These have no effect on the protective performance of the thermal spraying coating; but there is no need to select the appropriate content of titanium: the carbon content of the second largest iron is 3, and iodine mainly exists in the form of flaky stone. 1. Spheroidal cast iron (desired): The chemical composition is similar to that of cast iron, but due to the addition of or part of it, the composition mainly exists in the form of spheroidal stone.
Forged iron, white forgeable iron, white forgeable iron and pearl forgeable iron, their durability and durability are derived from the annealing process, and they are not allowed to be produced in the primary stage.
Traditional acid annealing can remove the surface sand, stone or accumulation of the money. To remove them, it is necessary to use a spray method. The shaped castings should be cleaned with fluorine acid. The design of the parts must be constant. For some small parts and solid parts, as long as the material and surface conditions are suitable, the hot-dip galvanizing will inevitably have problems. However, for larger castings, the design should be considered to ensure that the surface is uniform and avoid the deformation caused by small heat. The design of the product uses a large inner surface angle and increases the number of cavities. The deep negative angle will make the casting surface rough, and the casting and rolled parts are more likely to form a thicker hot-dip galvanizing layer. 4.2 The benefits of non-ferrous metal mesh coverings are always effective in extending the strength of the steel matrix. The best use is made of aluminum or lead alloy, aluminum-zinc alloy or composite iron-based alloy covering layer. They can be used as a barrier to protect the vehicle, road, or thermal insulation components in two aspects: chemical barrier and heat dissipation. The alloy is subjected to the influence of the surface corrosion environment and off-axis medium, but the two external properties of steel are more important, and the barrier rate is often gradually lowered over a long period of time. The relative influence of different corrosion media will definitely change. In the long service life, the remaining benefits are not related to the overall performance of the steel structure. This benefit can be slightly reduced. If a longer overall life is required, a coating system should be used to maintain the covering layer. The initial coating can be removed and re-painted. Re-painting should be carried out when the initial coating is still effective. The selection of zinc or aluminum coating systems should take into account the following items: a) the overall external environment of the building (see Table 1);
environmental changes including long-term environmental changes and any special environmental conditions; h)
initial maintenance of the metal coating system (see Table 2d);
new installation requirements:
GB/TF9355-2G03
coating cost includes cutting and cleaning and full replacement of the coating when it reaches the end of its maintenance life. The cost of the minimum repair and re-writing: effectiveness and cost, the maintenance of the protective layer system is difficult (the first maintenance life of the space is less than the required life of the steel structure). The order of the selected protective layer system should be determined by the relevant component processing party and the metal mesh system construction party. Note 1. The information can be found in the product manual. Note 2: Some countries and regions do not have a clear understanding of the heat treatment process for the plate and line), and the heat treatment of the aluminum alloy system is not applicable to the aluminum alloy system as the aluminum alloy coating system, so it is not listed in the rate 2. H.6 Dissipation in different environments
6.1 Atmospheric erosion
Table 1 gives several typical atmospheric erosion environments (reference 1S9223). At relative humidity levels below 60%, the corrosion of steel is negligible and iron parts do not need to be protected by metal coatings, for example in buildings with high humidity. However, for iron parts with external and sanitary requirements, such as parts used in high-quality products, they still need to be protected by a continuous metal coating. When the humidity is above 100%, exposed to condensation, long-term condensation, or in a full-scale state, iron, like most effective metal mesh, will suffer serious damage. Contaminated deposits on the surface, especially chlorine and hydrophobic salts, will increase the corrosion of the steel: if the deposits on the surface absorb the surface and dissolve, these deposits will further aggravate the corrosion of the steel. The ambient temperature will also affect the corrosion rate of unprotected steel, and the influence of environmental fluctuations is greater than that of average temperature. The macroenvironment is best defined by scientific measurements (e.g. relative humidity, humidity, oxide and sulphuric acid flux), but these are not often available, so Table 1 and Figure 1 give a qualitative description of the environment. Table 1 and Figure 1 are new results from the United Nations and other global studies. The erosion priorities for different countries or regions may vary, e.g. the erosion of the atmosphere of the United Kingdom may be less erosive than that of the United Kingdom. In the past decade, the rate of erosion of the atmosphere has decreased significantly due to the reduction of atmospheric pollution and the reduction of the concentration of sulphur in the atmosphere, and further reductions are likely. Some efforts should be made to select the type of atmosphere based on known behaviour or levels of sulphur or chlorine: for fronts, the sulphur content is important as it is similar to other atmospheric environments. The erosion rate of zinc increases with increasing sulphur dioxide content. Table 1 Environmental types, erosion hazards and erosion rates Two erosion selection sides
Room dry combustion
Zhongxi East Station area
Fortunately: Township
Two-side species
Evaporation hazard
sin, 1
0. 1 --0. 7
GB/T19355—2003
Corrosion and orchid types
Indoor: high humidity, slight air pollution
Outdoor: inland cities or seaside
Indoor: new pool, chemical industry 1 "etc.
Outdoor: industrial transportation or coastal cities (5
Air: commercial lake monitoring land area commercial disk north seashore overflow zone storage
Table 1 (general)
Real estate insurance
Except for the standard 2V year's paragraph clearing its grinding mother violation rate!, with 2 different enterprises, the speed to
minute level use
Zinc night pure rate of effect Xie general down? They are made in the each price tag is bad, for the next step, it is said that the system is determined independently and the new environment has gold and the table is with the garbage. The method of network operation is carried out, the steel defect is corrosion faster than the second stricter, the separation and return rate in the high environment are common technology, the whole layer of reading is firmly with the change of non-sexual release, so that the relationship between the state of nature can be seen (not connected at the same time and change, the past 36 years, the hot situation (maintained to be a distribution institute) in the world is different from the large period of hillock, which shows that the annual bad environment types discussed in the discussion are with the teeth coming in (this table is based on the number of 199 years, the period is far lower than the quality industry, the market is called, the academic pollution heap system is reduced, the future of the release plan is set to the low return rate when the sea water zone is lower than the natural zone, which must be high again. This is suitable for the European humid tropical environment The speed of the plate is limited to the expert. The unit is the fee. The second dimension after the German is specialized. The unit is the science. The environment is subject to the upper and lower limits of the life of the four car layers in the agricultural demonstration-Datong system. 2: No special environmental printing technology training big start active inside
around 1 according to the typical pitting rate classification of the typical first elastic repair of zinc coating in various corrosion environments 1
GB/T133552033
microscopic damage rate, also is the same as the structure of the environment conditions and the upper guide, the same it retreat to the medical for the possible environment, it can micro than the study of the basic gas food system more accurate evaluation, the group is the change of attack month without design except design, We do not always know the details. However, we should make the best possible judgment of the objective environment, because it is a vertical part of the total environment, and this overall environment requires protection against corrosion: a typical example of a dual environment is to analyze the microclimate of the lower part (especially the water surface). The corrosion of steel structures inside buildings depends on the internal environment rather than the "normal" atmospheric environment, such as: the influence of high temperature on the environment is not clear. The location of the components inside the building is related to the coordination of the parts inside the exterior wall. Steel components are completely separated from the outside and are divided into two parts by a space. The corrosion risk is less than when the components are in contact with the outside environment or are in contact with the outside environment. When the building contains industrial, chemical, fluid or polluted environments, special attention should be paid to it. Semi-detached structures, agricultural barns, should be treated as outdoor environments. 6.2 Corrosion and anaerobic erosion
The soil content, mineral content, organic content, water content (including sedimentation and anaerobic erosion) in the soil environment are determined by the concentration of pollutants. The corrosion rate of polluted soils is usually higher than that of polluted soils. Soils containing lime and sand (such as those without chlorides) are the weakest. The corrosiveness of silt and clay soils is also limited. For dry peat soils, the corrosion effect depends on the total acid content in the soil. For example, pipes, tunnels, tank installations, etc., the presence of different types of plastics, the formation of oxygen concentrations, etc. will cause increased corrosion (pitting) in the area (attached area). For some applications, good soil reinforcement, while taking non-metallic protective measures for the steel structure, while coordinating the control of soil vibration, can also be achieved at the 1. block/solid gas interface. The soil clods and the lower half of the water level and the boundary of the soil clods and ... , zinc in condensed water can also cause serious blueing, especially in the environment between 55~3 (such as the case! In addition, the zinc layer can provide protection under any water conditions, and the water volume below 50% can also provide protection. The life of the zinc layer in low-temperature water is often longer than that in non-condensing water (calculated from the starting point of the water transmission book or Li-CT. The zinc layer must be selected according to the water quality and the detailed coverage layer H must be selected when combining other requirements). The composition of the three-stage running water varies greatly, and prior experience or expert design is required. For hot water meters, experts always pay attention to the following (see DIN0933-3:1491 for more details). There are ten problems with the steel components (including pipes, accessories, water tanks, and tank covers) of the water supply. All of them should be avoided. Contact with drinking water, all are non-toxic, do not emit any smell, no pollution, will not cause the water to start purple box. For gray boxes, the need for heat and humidity to protect the coating, the use of the paint layer
fluctuation zone (i.e.: caused by the natural number of water, such as the tidal movement of the water level changes; or the area of artificial water level changes) or flying should be considered, in addition to the fire door technology, there may also be atmospheric abrasion test method, the color of the fresh water core four points complex, such a simple table guide is not enough to select the cover layer, see Table 2; it should be noted that for the commercial problems in the water environment, the department should seek expert opinions to obtain comprehensive guidance under relevant conditions. 6.4 Other exposures (special situations)
6.4.1 General
Due to the diversity of the special exposures, 1.2~.4.4 only discuss a few points, and Table 2 includes these points. 6.4.2 Chemical corrosion
The pollutants produced by industrial production are corrosive. The acid produced will promote the corrosion of the layer, while the reduction produced will increase the corrosion of the layer. GB/T19355—2003
The coverage scale is mysterious.
Although many organic substances have little effect on non-ferrous metals, special consultation is required for each chemical substance. 6.4.3. Acoustic corrosion
The corrosion of the stone in water, wave condensation, etc. can cause natural mechanical wear and tear (sand can also aggravate the damage).
The corrosion resistance of the non-ferrous metal coating is much higher than that of the traditional coating (1) times or more). Zinc-iron alloy is particularly important for the following reasons:
Pedestrians, motor vehicles or public buildings are subject to severe abrasives! The parts under the name of the building are also subject to severe impact oil and abrasive corrosion. The good combination between the metal coating and the copper alloy has a good thermal conductivity and is affected by the heat of the zinc powder.
6.4.4 In the case of temperature rise and high temperature exposure
The above-mentioned coatings are generally used in temperature rise fields. Any organic materials and theories must be verified separately.
2 The temperature above 202℃ is not considered. The temperature between 20U℃ and 5U0 only appears under certain working conditions, such as the heating system, the gas box outlet pipe of the chemical plant, and the surface layer under the hot environment will be subject to expert advice.
? Design of protection system
7.1 General principles
The design of the equipment and structure will affect the selection of the protection system. The optimization design makes it suitable for the best protection experience and the most economical platform.
The points to be considered include
3) Provide a safe distance and convenience for maintenance work. The dead corners and doors that are prone to water accumulation and accumulation should be avoided on the wall. The smooth appearance design is conducive to the construction of the protective layer and helps to improve the corrosion resistance. Isolating chemicals should be used to prevent acid from entering components. For example, non-water pipes should be used to prevent the flow of ice and ice: For safety areas where people can no longer enter, the adopted boundary layer system should be designed for the use of components. If there is a certain degree of corrosion, additional protective measures should be considered (see 44 of the National Standard Association of China). d. Care should be taken to prevent the contact of soft components with poor protection layers with other building materials. For contact areas, special considerations should be given to the bottom of the city. e. Consider coatings, glues or other materials for heat insulation. Heat treatment, powder wood cleaning, light machines that are sensitive to zinc can only be produced by workers! Heat spraying and translation according to the shore. 1 can be avoided both at the site! and in the air. The paint will be left on the cover, but the paint will be more controlled in the process of installation. The final painting will be carried out on site. When the whole system cannot be constructed on site, the requirements of the construction regulations include avoiding the steel structure of the completed support surface protection from being penetrated by the intended steel structure. If the cover layer is not covered by the hand, the steel structure will not be damaged. If the cover layer is not covered by the hand, the steel structure will not be damaged. If the cover layer is not covered by the hand, the steel structure will not be damaged. If the cover layer is not covered by the hand, the steel structure will not be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. If the cover layer is not covered by the hand, the steel structure will be damaged. 7.2 Professional Design
The design of the hot-dip coating is not to be sprayed on the surface of the coating. Appendix A gives the basic principles for the correct design of the hot-dip coating and Appendix B gives the basic principles for the correct design of the hot-dip coating. The design should be discussed with the manufacturer at the planning stage so that the application of the processing is as balanced as possible. During the heat treatment period G
GB/T19355—2303
A part of the base metal should release waves, which may cause deformation of the plated parts. The design of the electroplating parts should follow the conventional design principles. Individual standards are not involved. The design of the six shovels should be determined through consultation with professionals; generally speaking, large zinc and machine-readable parts can be rolled over in the machine, but the equipment used may use other shapes of parts:
7.3 Parts and hollow parts
7.3. 1 General
If the core of the parts is tightly sealed, no protection is required. If the core of the parts is completely sealed and not gasketed, both the inside and the outside should be protected to avoid internal pollution and water marks. 7.3.2 Thermal diffusion protection
Thermal diffusion is the coating with the same degree of coverage as the inside and outside. Liu Guo and other hollow parts are not subjected to heat treatment after assembly. They should be provided with "air-conducting non-gas-conducting" see A:
73.3 Thermal protection
Some internal surfaces are not protected by thermal spraying because thermal spraying cannot properly compensate for this. Therefore, if only the internal surfaces of some sealing stations are protected by teaching. Other methods (such as dry machining) are used to produce the required protection layer. 7.4 Joints bzxZ.net
7.4.1 The joints of fasteners used with thermal coatings or thermal insulation coatings shall be inspected, damaged and protected. Under the condition of gold, the protection level of the fasteners shall be consistent with the required overall surface protection level. For special requirements, please refer to the relevant product standards and the purple solid push numbers that are in the process of being formulated or published. Initial.
The use of thermally effective zinc should be considered, see GR 13912-, which requires a small chain layer to be covered to> the thermal requirements of the wear layer). The relevant European standard (Working card 02620%> is in the draft committee stage 1. Other test layers must be tested. Stainless steel hooks can also be used. If there is a need for aesthetics or to prevent this from happening when chlorides fall into liquid and are exhausted, then the installation should not be removed after matching. In this case, the stainless steel should be pre-treated. The mating surfaces of the technical heads made of high-scratch paint should be particularly adhered to: it should be said that there is no need to remove the heat-resistant coating in these areas in order to determine the new friction coefficient. However, it is used in situations where long-term protection against groove movement, end change and the need for assembly size adjustment are required. 7.4.2 Welding design related to pre-treatment of welded joints should be considered when considering welding risks. a) After surface pre-treatment, the welded joint should be stirred before welding; b) The welded joint should be maintained after blasting. It is best to replace the welded joint before immersion or heat treatment. After welding, the surface should be pre-treated according to the standard 1 standard. After immersion, the welded joint should be uniformly welded (that is, the amount of force generated from each weld should be equal): to avoid introducing virtual forces in the structure, the weld liquid should be removed before the welded joint is completed, and for heat treatment, a light pre-treatment source is usually sufficient, including no wrinkle sections, and the pre-treatment of the welded joint is required. It is best to remove the welded joint separately. There will be sedimentary deposits under the weld, which can be cleaned with sand and then coated (this two-treatment method is not enough). Used to clean the area where heat-resistant steel needs to be strengthened). These should be removed before adding heat or potential absorption. If there is no heat or residual material after welding, in order to ensure the best quality, the incandescent area should be cleaned before the connection. After this connection, the hot end should be protected by wind, "low temperature bonding" and high temperature reduction materials. The welded parts have been covered with protective materials; before painting or spraying, the surface of the steel structure should be pre-treated as the overall steel structure is difficult to match. The sound and sound of the 1st party are reversed. 7.4.3 Brazing or brazing of assembled parts can not be heat-resistant: many parts are not suitable for heat-resistant assembly, so this should be avoided as much as possible. If you are considering welding steel, the hot-dip galvanizing manufacturer should consult the manufacturer. Since these processes may use a detachable soldering agent, the residual flux must be removed after welding to avoid separation of the coated parts: the design of these parts is convenient for this. Please add a protective layer on the aluminum coating (IS) 12-5 times. Add a protective layer on the lead or lead coating. For non-rigid environments (or for situations where the life requirements are not met, if the environmental treatment is specified, the final coating needs to be painted. For humid environments, two coats are required.Only then can he reduce the porosity of the overlay to a minimum. In the event that a component cannot be repaired quickly, some steel in the structure may be damaged by corrosion. For the life of a component protected by a protective coating is longer than the life of the component system, the component needs to be repaired again to extend the service life of the general coating. It should be repaired before any damage occurs, preferably when there is still 2cm-30m of residual metal coating. In this way, the total life of the metal protective coating system after maintenance is longer than that of a single paint film. If the maintenance is delayed until the rust is completely eliminated and the rust begins, the component will not be repaired according to the maintenance method of the paint
gold domain visual protection coating system. The total life of the protective coating system is much longer than the sum of the life of the metal protective layer (see Table 2) and the appropriate paint film or powder coating used separately. There is a synergistic effect between the two layers, that is, the presence of the metal cover reduces the corrosion of the bottom of the oil coating; the paint protects the metal cover from premature corrosion. In the hope of retaining an intact layer, the paint system should be applied with a particularly thick film. · Some. The repair is usually carried out when the metal temperature is damaged. The deterioration of the metal cover is usually longer than that of the metal cover. It can be noted that the first repair time of the metal cover is 20 years or even longer. If the same metal cover is used for the last repair, it is recommended to use 10 years. It should also be noted that the deteriorated film area will retain the product gas, thereby increasing the corrosion of the metal, especially on those surfaces that are not exposed to water. Table 2: Recommended long-term protection of the zinc cover system for specific environments 2.? /year or 5/m-/year 1 test back to the award, a total of 5~10 times the real type when
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general description also dynamic certificate fast
in accordance with GB: T130! 22 thermal design garbage evaluation
diffuse micro example, etc.
in accordance with GB/T9733 closed or unused thermal tons of the European standard R79 good closed thermal call information
in accordance with G1/137$3 for the negative into the use of the hot spray hot leather bell cabinet Z273 (see EN10142 into EN1C147 Or 1504955
(R/T79 war transfer (report pool
thickness:
PE·H5
2F~-55
Note "*2
1,b5,6
3 joint loss ten standard light stomach prediction ticket quantity <such as V16243 or product steel raw material <see CB/T1212-G2). X
Table 2 (missing)
Texture type! Enjoy the internal high humidity pressure light air level single, there is a knot! b
GR/T 19355—2003
The long-term pregnancy rate of the type of corrosion rate must be C.? Year 2/5//year) financial volume steam seam repair life/
length:: o---n
medium (5-..16:
ti (5)
yuan table welcome standard
plate description and applicability
in accordance with 1351-thermal recovery path
thermal consultation (creation plan EN1G240)
price in accordance with H73 main or not to close the thermal research and cleaning (H/9713 of the closed cause of the natural separation of the group Same as above
Heat sintering pipe (eg. 10340)
Comply with CB:T:5022902 heat sink
Upward or:
Expected needle drag 2275 (see EN10142N10147 or 04938
Electrical chain of R/T9799 (consultation)
Medium surface coating average
Thickness (low volume)/2T
E -- 85*
45--55*
.2,3,4
i,,5,5
-,2,3,4
) material of this type (typical value of zinc for outdoor use is .?n/4 adult tu.t).
Beixian County is good, Chinese
method (13~20)
now 2 with the same diameter,
a can be removed and the applicability
specially suitable for 11-2 material design
conform to the heat of the PI when the rack
|tt||Meanwhile, the seal of the material or the heat saving heat saving material (101
IE or
heat setting pipe, for example, in accordance with EN1024)
Product 4:R/T136-2092 heat product companion
Shangmao coupon,
heat conversion channel template 275 see N!42 or E!0!17 or 49 cold work year photography
Holding parts 63:T0700 electricity demand country: WorldCom) on
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The original degree is m
45 55:
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GR/T19355—2003
Table 2 (Ming)
4-position sex species long-term typical connected to -4/year 15 years 30-type Pivig good mine!
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Source (:5)
Yishengqing injection and Maigencha
etc./113-heat setting! Use single m
GA/T7 holding company's thermal quality decorative frame
research and development of C1/yuan 3703 to use or complete the use of thermal items except 2" Shengguang:
production will i/11312-2Gn thermal hair aunt check (thickness um) combined with 024 with chain selection fee
shang on bite old,
hot cast micro zinc plate 2275 see 13142 or 41 tons
combined with 1279 lock (long)||tt| | Sensitive lock details package example plus comfortable E129
style will H/T1H22:G2 hot dip good
system low)/-
note (list a farmer end!
1.3.3.+.9
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joint decision ten specified tube quantity light layer store quantity: example plus 2EY249 rate product mid-term thickness (milk G3/3012-22. requirements smoke let up is the minimum average of the corresponding Is to,
select the frequency effect of the heart um,
limited interest category: very high (the most 3 parts of this room fast unique category》[long-term need for the slow type of the speed of the military m year. 6 or / year 1-40g//year
typical tube leather fiber fine life
do capture translation and applicability
slow pin thick chain layer, not always applicable, see the list of clothes! Request 2 symbols CB: 10703 table seal group heat difficult pet special combination E/T 8753's thermal width zinc removal C3.T070S to the pressure of thermal width removal of the current
support the thermal zinc
or:
grab 1392-22 thermal diameter sales m
combined CB:T973's judgment closed thermal test Xu climb
symbol T's thermal penetration cleaning sales
company or:
symbol will H/112-2 (2's effective chain (thickness center, m) will get 751, female habits of heat need to remove or drill heat through 0
can be on or:
economic combination R18:2-57 fever & effect selection
heat acne Xie sales tube (combination NJn240)
package 727E042F:117
section contains "/electric selection (ordinary)
single topic benefit total flat clever
thickness (although /nu
45~ a5*
The minimum thickness of the bottom of the product is determined by the thickness of the vertical bar mm.
Note: "End of Record 2"
11.2,3.4,:6.
1.9,3,4,5
1,2,3.4.5
, the requirement exceeds the known
Table 2 ()
CB/T193552053
[C hemp species: high corrosion resistance species with the highest degree of corrosion resistance [the typical zinc content of long-lasting products is 4±0 g/4) g/(4
Its consumption will be pregnant for hundreds of times!
Length (13-25)
(5--10)
A sensitive description and applicable busy
hot pouring buns
Flower meets GP/T5751's sealed heat or aluminum flow meets the heat path
Meet GRT73's all heat promises
Meet (+H/7's system period of potential spray companion
Can be on or
Heat method of the various libraries should be, not always, is listed in the table "day's note with G1/9793's original use of heat change pot
Meet C:79793's unsealed heat quality selection meets / closed heat spray
Meet B/T3293's group Yipengcha
Original factory:
Waiting for GRT1312252's natural transfer (production?m) E on the initiative:
Fuhui (R1303-2003's hot set false steel barrier class 3m or! After two core treatment)
Heat control control capital: 124
Thickness (Jingxing)/um
152~.21c4
25--55*
25:-55
Note:!
1,*,3.4.*6,11
1,2.3,2,1G,11
1,2,3,4
1.2.3.4.6
1,2,7.4.5| |tt||Depends on the quality of the coating, for example R10246) or the thickness of the product (see GR/T13S1220
The corresponding minimum average thickness should be.
The diameter of the screw part is 5mm.
This condition and the maintenance time are 20 times greater, and the infant needs to heat the mirror to get it. For example, Figure 13U country 20V, the wood heat is calculated by the same zinc method, and the product is not allowed to be separated before mixing. The source layer is not damaged. One section is G1:133122002 and listed in Table 2.
)L:2 requires basic benefits. The typical two-in-one average is 1> year ~ 20 years or 704//half)-15u/(year>
K(1c--20)||tt ||--General topology shield
derived from GH's station
conform to GBS793's female heat screening construction
same as the correct art
experience (see 2F's foreign
flower combined with H door 9793's heat price calculation
same as above or old:
immersion (early sensitive on the list of "water standards") back on or test:
conform to /1131-5's heat installation to accompany the degree of m
heat chain parts, machinery and changes in seawater--sensitive all increase protection, the salt heart than seawater's total separation or strong or disease · Liu its use Sichuan special life · Qianneng lift mountain general letter design, single side inner
thickness (volume low>/um
75~·F5
1, :,5
1,2,3,4.11
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