This standard specifies the definition, classification, requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. of metal bellows expansion joints. This standard applies to the design, manufacture and inspection of circular expansion joints installed in pipelines whose flexible parts are integrally formed unreinforced U-shaped, reinforced U-shaped and ∩-shaped bellows. The design, manufacture and inspection of expansion joints for pressure vessels can also be used as a reference. GB/T 12777-1999 General Technical Conditions for Metal Bellows Expansion Joints GB/T12777-1999 Standard Download Decompression Password: www.bzxz.net

ICS 47. 02. 30
National Standard of the People's Republic of China
CB/T 127771999
General Specifications for Metal Bellows Expansion Joints1999-06-11 Issued
Implementation on 2000-03-01
Issued by the State Administration of Quality and Technical Supervision
GBT2777—1999
Referenced Standards
6-11 Inspection Rules
Many Marks
Also, the Standard is in force..
Appendix VIII: Appendix to the Standard)
Design and Design
Structural Parts Design
CB/T:12777—1999
This standard is a general technical record of /127-0U15 metal expansion joints. This standard adopts the relevant contents of the European Joint Manufacturers Association (EJMA) standard 1S63 No. 6 and other domestic and foreign standards, and absorbs the research results and practices of the domestic expansion joint industry in recent years on the design of high-efficiency pipe expansion joints. Compared with the previous version, the following are the changes in the technical content of the standard: 1) The type classification and model representation method of the broken section were added: 61 Added the design formula of the wave-shaped wave-shaped tube, and changed the fatigue life safety factor requirement of the drum tube design: 1) The brushing requirements of the pressure-bearing simple section were changed; 2) The requirements for the long-distance connection of the pipe to avoid damage and the long-distance connection of the welded joint were changed: e) The test pressure requirements of the pressure test and the test displacement cycle requirements of the yellowing test were changed. Except for the two items of the rigid instability test, this standard replaces the GN/T12777-.19S1 standard from the time of implementation;
Appendix 1 of this standard is the appendix of the difference standard Www.bzxZ.net
The international standard is issued by the China Lead Industry Corporation. This international standard is issued by the China Lead Industry Corporation. This standard was drafted by: China Shipbuilding Industry Corporation Seventh Research Institute, Zhongju Aerospace Industry Corporation, China Shipbuilding ... juinlsGR/T12777-1S5E
The technical standard is now "Golden Wave Effect Tube Shadow Service Section (hereinafter referred to as Color Service Section"! Definition, division, requirements, test rules, inspection rules, marking, installation, objects, world contacts, etc.
This standard is suitable for the design, creation and inspection of various shapes of lamp components that are installed in the overall forming light machine, and the design, manufacture and inspection of various shapes of pressure vessels and expansion joints. The same standard can also be used according to the referenced standards
See other standards The text of the standard is published in the market standard and constitutes the provisions of the standard. The standard is not published and all other technologies are valid. The standard will be used by customers for the purpose of discussing the latest collection of the following standards: 415m-1 steel pressure puller || tt || GB/T gas welding, for TI fox welding and gas shielded glow welding, the basic 4 forms of size GBT1300.31995 maximum limits and basic parts Part 3: standard year standard GB/1301-197% standard and car Wmm standard and r will be GB/ 1G02—[!
Male and fitting dimensions are too large for n North chaos, shaft male belt
Gn/T 3230-182
Stainless steel cold rolled rust plate
G17722.17-1952
$B13163
Stainless steel hot rolled plate
Conveyor pipe
GBT11.1? 100 yuan mature 1. Technical conditions for delivery of goods Part 1: Class A parts GR/T14976
61S94 Fluid conveying steel pipe GB/T 15010
And gold cold sheet
616549-1937
Pressure test equipment and repair service section
G5 6023b-1037
CR 1331)
JB 2:26—985
3 Definitions
Industrial metallurgy standard for pipe damage detection and collection of materials for shipbuilding and ironworkers
This standard adopts the following definitions.
3-1 The law of the pattern senses the node belows expansion joins a piece or a piece of wave effect kidney and structural group broken. Used to absorb the palace reverse caused by thermal expansion and contraction (or: change the size of the device.
3.2 The pattern has 1llw
The rate of service node mouth stops a real return and the end point edge segment group or the raising element, the State Quality and Technical Supervision Bureau approved 1999-0611 2C9J-C3-C1 real bottle
t.2 771865
3.3 pumping type account iasxiaxaxonit
F1 a corrugated snow degree pure parts, + fee also ten absorption section fashionable cool repair can withstand the bellows pressure large thrust feeling pulse (then
1-and: 3 waves this
example: single type shadow section
3.4 ​​single type reading type according to iagingudxlmiioim day-wave this popular sales about, leading to the front and rear panels and other conditions of the vehicle group, only the age of absorption years and the displacement within the liquid can withstand relatively large The expansion of the tube is reduced.
Pool: 4 or 1 more obvious board: C collection
Medical 29 car can pass the car shop
35,000 chain grinding ingleibaxicom
H a corrugated tube and pin, drink board, and the text: and vertical board and other structural bamboo group table, can absorb the angular displacement of any surface and can withstand the pressure thrust of the change of the kidney (see 31, CB/112777-1999
1 including. 2 vertical. Prohibited: 5-axis, 5 —Wanhuan, 6—wave type 5 book type direction type armor type clothing section
3G product self-type energy according to louililrantirclkir:sirarit than the two drums connected by the central intelligence caused by the sale and the structure of the components, mainly used to absorb the axial and lateral displacement of the platform and can not withstand the impact of the wave pressure thrust of these sections (see letter 4)
1 efficiency 3—center: 3—pin kidney
Figure 4 type free expansion section
3. Type Hf type energy section dnuhleid rkpaasie jniri out of the pipe is connected to the damage of the function of the light by the light, the board and the ball and the long surface of the picture and other parts, the absorption of any plane in the lift should be related to the year by the general output force of the war cell section (see Figure 5). GR T12777-1933
[or play + with the pipe x figure letter
figure reverse pull rod type shadow expansion and
3.8 send meal original account un.ul, higxlxn
mountain return pipe connected to the test of the total effect of the pipe transfer teaching difference and Beijing reform structure of the Jiangcheng, can and receive a horizontal recovery to the secret elegant withstand source book attention to the compensation! See Figure! 1 receive auxiliary:: potential drinking pipe: middle:: model: 6 to learn the final type of the test account
3. 9ti r: m, k: -l.:nb.l- ml:. -apam-:-rrm on the middle of the high and pull the individual effect of the tube and "hand still axis, teaching or I proof of the average design group needs virtual absorption, flat and careful but more rise in the joy of secretion for the use of the heart! The correct picture with China: letter: word sales report
can be to the end section
GR/T127?7196S
310 tube pressure balance type account section hadgrer3reboe.Ticed exi.nxiwnjoint out a working corrugated pipe middle pipe period connected to the two upward wave system and a holder wave effect a release head change a through, head, tie rod, end to the ball and cone and other structural parts women to form a soil to absorb the color of the kidney thrust and the throw combination space displacement and can fork and corrugated kidney impact work thrust (see figure,
1 Ming 21: can: 4 work efficiency price three 46-year storage, -1 domain 9 six figure bending general pressure flat type expansion book
3 type section cjin
by the position of the two ends of the two work by this pipe and the middle of the wave effect call women press rod and end plate and other joints are supplemented by the city, soil to be used for the stock space between the position of the material and its ability to flat and method did not pipe out of the center and the expansion (see figure 1 consumption price: 2 work efficiency section, 3 grab rod a flat this stomach: % medical S pressure for the flat two type expansion grams
3.12 External single type joint exiprnsllrexuizdsirglexialexpansinnt jtim is composed of a wave-effect single body that bears external pressure and an external first control and guarding structure, so that the axial surface of the wave-effect joint does not bear the thrust of the energy efficiency pipe pressure (see Figure 13,
GR/T 127771999
1- Imported academic year 12 Imported fine year, limited credit: 4 items: potency: 6- Raw mouth ring; 7- Output above promise to write Figure 1 ℃ external axial grinding service section
3.3 Strengthening ring reinforcing
Strengthening 1: Shaped corrugated tube in the month to strengthen the wave number of pressure-bearing ability of the surface or return surface teaching surface parts. 3.-4 Ring lixiging
Adding the shape of the bellows in the month to enhance the wave valley wall resistance to internal pressure and make each corrugation shrink enough to leave the air\" shape drum blood parts
3.15 Adding the reinforcing Collars are used in wave effect tubes to enhance the end-to-end dynamic capacity of the ring parts: 3.16 Colored conarion || tt || war effect tubes are not solidified or annealed after forming, and have cold-worked or hardened conditions. 3.17 Hest irunted condirioa is a kind of ring-shaped condiment that is solidified or annealed after forming, without cold-worked or hardened conditions. 4. 1 4.1.1 Type of expansion joints: Types and codes of expansion joints are given in Table 1. Table 1 Non-type codes: Type of expansion joints: Chinese type: Single universal type: Hui type pull rod type: Double chain type: Compound type: Straight pipe type: Straight pipe type: External pressure type: axial type: 4.1.2 Type of expansion joints: GB/T127—1999 Type of expansion joints: Types and codes of wave-effect tubes are given in Table 2: Types and codes of wave-effect tubes in expansion joints: No V added: Added color: 4. 1. 3 Confirm the connection type of the expansion part. The connection type and code of the expansion part and the pipeline or equipment are discussed in Table 3. The connection type before the expansion end is reversed. Code. Section type. 4.2 Section model expression method. Section model basic technical combination or type such as. Design displacement, mm or) Nominal diameter, rm. 1. Dimensional force M. 2. 3. 4.2.2 For compound self-exhaust energy-saving section. Code: WP) Design displacement represents the design axial displacement and design lateral position. The design axial displacement is in front and the design displacement is in the back. The two design displacements are used in the contract manufacturing. The first design displacement is a single axial displacement. When the design axial displacement is zero, the second design displacement is not valid (design axial position is zero). 4.2.3 For the design displacement, the design strength, design fatigue life and material design characteristics of the bellows shall be clearly stated in the contract manufacturing product sample. When ordering the bellows, in addition to the specified design position requirements, the above design items shall also be specified. 4.2.4 Knee expansion joint type special indication
a) The designed positive force is. 5 MPa, the diameter is: a1n, and the effective displacement is 2( 1nmL, the end injection is a square coal control type. The wave effect tube is a non-reinforced external pressure type. Its type guide is: Z1.i-0-2, b) design is 9.6M1s, the special diameter is 8mm, the design axial displacement: the design lateral displacement is 35mm, the design axial displacement (the design axial displacement is zero! UE. The part is out of the blue type, and the wave tube is a gate-shaped pressure flat function The type of product is expressed as: WP (> F0.-R10-3/10. 5 Requirements 5.1.1 The material of the corrugated belt should be selected according to the working medium, external environment and working temperature. The material of the corrugated belt is listed in Table 4. 12777
C:1N2M
x-skis
rut+1-N:14M02
Common bed practice corrugated tube tree structure
Full production more production obvious its sub-clear, (
20n--425
206--459
GB/T 4237
/T 320
CE/I-00
C3 1333
Agriculture: The material ratio should be the same as the listed state. For: The selected stainless steel machine: The surface quality of the steel should meet the requirements of the table and the group. For, the selected stainless steel plate of GH/T32S should meet the requirements of No.2D or N,2B, etc.,
5. 1. 2 The supplier should save money, and the materials should be more economical. Generally, the material of the plate should be in the form of grain spacing.
5. 13 The guarantee should be in the middle, the certificate should be better, or the damage, the sales and the acceptance limit should be shown. The conditions of the work should be appropriate:
E. 2. 1 Light grain pipe
Temperature grain inflammation, strengthen the ring point as the balance ring, the theft of the simple transfer and service parts of the medical number of the car! The mathematical meaning is Appendix A (Songnan's fermentation record):
5.2.2 Medicine components
Dragon method equal parts of the return and so on broadcast head education standard guide tension principle to prove the design of the shadow evil section in the simple placement, force parts and other parts of the design according to the standard
5.2.3 Installation. Leveling primary protector||tt ||5.2.3.1 The system should not be equipped with shipping parts, so that the shadow account section can maintain the correct screening during the operation and maintenance period. 5.2.3.2 The real-time color account section should be equipped with a lifting lug, and the three-in-one belt should be designed or able to withstand the total amount of induction. 5.2.3.3 If necessary, the pulse service can be equipped with a corrugated pipe to prevent the retreat, according to the manufacture, the installation is too late, the market rises, and the machine is damaged by the arc and the stimulation.
5- 3.1 Grade 5.3.1.7 The variable effect pipe shall be formed by the integral forming method such as pressure, pressure, punching, etc. 53.1.2 5.3.1.3 The pipe shall be made by injection molding and then made into a butt-jointed longitudinal door for full penetration welding. No circumferential seam is allowed. The number of weaving strips is given in 5, and the interval between each direction shall not be less than 250. The number of weaving strips is given in 5, and the interval between each direction shall not be less than 250. The number of weaving strips is given in 5, and the outer diameter of the ring is not ... GR/T12777—1999 5.3.1.4 The pipe shall not be scratched or polished. 5.3.15 The surface of the welded chain shall be free of cracks, pores and other defects. The surface of the welded chain shall be silver or golden yellow, or light yellow. 5.3.1.6 The corrugated pipe shall be inspected before forming. 5.3.1.6.1 The color penetration method is applicable to single-pass welding chains with a wall thickness of less than 2mm. If the single penetration test is not allowed, the following are indicated:
R) All cracks are larger than 1.5mm;
6) Four or more lines are less than 1.5mm in a row; : More than five diameters within a length of 150mm are not thick. 5.3.1.6.2 When the wall thickness is less than 2mm: The X-ray flaw detection grade of the welding cable should be the grade specified in GB167-15? B. The thickness of the pipe shall not be less than 2 mm, and the level of the defect of the chain shall not be lower than the E level of [B473 (1--1SS4 in 6.1 specification 5.3.1 The defect of each layer of the multi-layer pipe shall be staggered. For the pipe with a nominal diameter of less than 15 mm, the defect level shall not be less than 1.5 mm. The longitudinal position of the pipe shall be staggered along the periphery. There shall be no water, oil, mud and other dirt between the layers of the pipe. The straight edge of the multi-layer pipe shall be welded or sealed to make the edges of the pipes as a whole. 5.3.1.The surface of the corrugated tube is not full of mosquitoes, and the lamp is not splashed. There are defects such as scratches and other defects below the plate. If the short-circuited coupons are not short-circuited, the waves and concave purchases will make the drawing source too secrete. 5.3.1.9 The tolerance level of the ripple height, wave distance, and ripple length should be GB/T18C.3-1398 Table 1 TT18 level, ITE, F light one
total adjustment lamp
5.3.1.10 The detection limit deviation level of the straight section of the embedded corrugated tube should be GJ3/T1801-1S79*2 and GF/T1802-1979 Table 2 H12 level! When the internal note type is used, the trace is GT/T1801-2979 Table 1 or GB/18019 Table 1 2 level.
5-3.1.11 The curvature radius of the U-shaped corrugated pipe crest and valley shall be within the tolerance of 1.15% of the nominal curvature radius. The peak, valley and wall shall be fully transitioned.
5.3.1.12 The effective average radius of the U-shaped corrugated pipe shall be within the tolerance of ±1% of the nominal effective radius of the corrugated pipe and 15% of the nominal average radius of the corrugated pipe.
5.3.1.13 The perpendicularity tolerance of the two ends of the corrugated pipe facing the axis of the return pipe shall be 1% of the nominal diameter of the corrugated pipe and shall not exceed 3 mm. The nominal diameter is not more than 295 mm. The tolerance of the coaxiality of the two ends of the corrugated pipe facing the axis of the return pipe shall be 1% of the nominal diameter of the corrugated pipe and shall not exceed 3 mm.
5.3.1.14 The corrugation should be smooth and fit with the corrugation material. 5.3.1.15 The corrugation treatment should be carried out according to the heat treatment specified in the relevant standards or drawings. The corrugated pipe after heat treatment should be pickled and purified. 5.3.2 Pressure section
5.3.2.1 The service section with a nominal diameter not exceeding 353mm and other pressure sections should be made of steel. 5.3.2.2 The compression section of the steel pipe with a nominal diameter of not less than 400m shall be made of steel plate coils and connected. The steel pipes shall be made of steel pipes that meet the requirements of GB/T5711. The coiling specifications shall meet the requirements of 4-3 of GB5U233-1997. 5.3.2.3 The surface of the steel pipe casing of the compression section shall be free of corrosion, gas, sub-pits and welding materials. 5.3.2.4 The longitudinal welding and the intermediate welding of the compression section shall generally be subjected to local radiographic inspection. The length of the weld shall not be less than 20 mm of the length of each joint and not less than 250 mm, and shall include each joint. The length of the joint shall not be less than the length specified in 6.1 of 4730-1994.
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