Some standard content:
ICS23.040.60
National Standard of the People's Republic of China
CB/T 3287—2000
eq1so49:1994
Malleable cast iron pipe fittings
Malleable cast iron pipe fittings2000-11-21Release
2001-05-01Implementation
Yumeng Quality Technical Supervision
CB/T 3287—2000
ISO sheet
referenced standards
Product classification
Technical requirements
Test method
Control rules
8 Pipe fittings core size and macro length
9 Standard table, assembly, transportation, world abandoned
Attached standard attachment: pipeline test according to the size of the position type......
GR/T 32B7—2000
This standard is a revision of the international standard IS049:1994, TS071, GB/T32271S82≤canned cast iron pipe fittings, GH/T3288-1982&canned cast iron pipe fittings according to 3.13/[3289.1~3289.3S2952% cast pipe fittings type and size 3. This standard is equivalent to 15)49, 1554, and the fuel-efficient single quick pipe connectors according to 1S07-1 are processed according to GB/T7.1:1993&Standardization Work No. 1: Unit, standard starting point and expression rules, etc. 1 part; standard cabinet: basic provisions of the group.
Compared with GB/T32871982, GB/T32881592 and GB/T3239.1~3389.89-1982, the main changes of the standard are as follows
1. G/T3287-1982, GR/T3288-1982 and GB/T328!, 13289.3*-1982 are combined into one mark
2. Product classification and marking are added:
3. The test bottom of the precision inspection and effectiveness is added as a requirement; 1. The burst test in the standard band is eliminated
5. The deviation of the axis angle of the combustion line of the section in this standard is 45, 90180° and shall not exceed 1.5°. 6: The data of this standard pipe fittings fully conforms to CB/T7306.1--293055 case sealing calculation grade: Part 1, read the industry's course effect, the external thread, and GB/7G.2-2035 wide thread, general end thread, Part 2, the internal thread and the external thread are relatively shaped (R), the internal thread can be the most round shape (R) or round shape (R). This standard is effective from the date of implementation, and the same time is GB/T327-1982GB/T3288-1952G/T3289.1~3289.39-I.
Appendix A of the standard is the appendix of the standard,|| tt||This standard is jointly proposed by the National Light Industry Bureau:
This standard is issued by the National Building Hardware Standardization Center. The drafting units of this standard are: Hebei Chemical Consulting Factory, Shanghai Building Hardware Industry Research Institute, Tianyi Yi Tongbao Pipe Company, Xiaonei Taigu Ma Steel Factory, Xiebei Chuxian Ma Adjustment Company, Heavy Quality Dazu Pipe Fittings Co., Ltd. The main editors of the standard are: Liu Meixian, Huai Qiaoliu, Yu Xiehui, Liu Bingchuan, Yan Shang, Long Shiqin, Jiang Renjie. /3287-G0
ISO Foreword
International Standardization Organization (ISO) is the world's largest chemical organization (TS()). The ISO technical committee is responsible for the work of each international standard. If the technical committee works on the project, each member has the right to represent the technical staff. ISO is an international organization that is affiliated with ISO and is responsible for the production and operation of all electrotechnical standards. It cooperates closely with the International Technical Committee (ITC) on all matters concerning the internationalization of electrotechnical standards. The draft standards adopted by the technical committees are approved by the ISO. The draft standards are approved by the technical committees. The members of the ISO shall vote on them. To make them international standards, at least a minority of the member countries shall participate. This standard is the second edition. The first edition has been completed by the ISO. The second edition has technical aspects.
Appendix A of this standard is only for the reference. 1 Specification
National Standard of the People's Republic of China
Malleal cast iron pipe fittings
Malleeal cast iron pipe fittingsGB/T3287-2000
e 1S0 49:1994
CB/T 328/—IRN2
CB/T 328#-19
CE/T 328A. 1--289. 351942
This authorization stipulates that the long-term camp road company length parts! The following is a brief summary of the "transformed" product section, tactical requirements, test methods, inspection points, packaging, transportation and storage. This standard is suitable for small-diameter (6~.1cm) pipes for conveying water, oil, air, gas and hot steam. It is specified in accordance with the provisions of GH/T73H6. When used beyond the specified positive force and range, the system shall be negotiated: 2 Reference standards The following standards contain clauses that are referenced in this standard or are standard clauses. The versions shown are valid at the time of publication of this standard. All standards will be subscribed: All parties using this standard should explore the following standards to make the most of the performance of your product. [S49:1SS4TS7-1Add T. Effective inhalable drug injection connector G/T 19219RI
GE:T 133—15E1
GB/T 135 1651
GR/T _97—1981
GR/T :347-199:
GN/T-:8:199
E:12328
Gt*T 23-1!*7
GB/- 4356--108:
GE/T 73O.1
Spiral effect product
Diameter and energy system (diameter 1~mm)
Core filter snail pattern
Pot pattern benefit this size (-school
Public and matching (diameter 2.mm)
Glycoside snail pattern
Nominal color of each reverse component
Difference 027815)
Batch production counting sampling detailed media release sampling table for "continued batch inspection) periodic inspection to counting batch to sequence and sampling table coin production near-range heat determination busy inspection! 55 Sealed pipe Part 1 Commercial internal wire and external explosion diameter (cCVS0) -13GBT 7306.2
8307-1$87
GB/ 3AU IS&8
55 Rate to bitter screw effect Part 2 Round staggered internal and external combustion (e17-:1391 non-effective sealing effect
Can hold
GB/ 10922-- 1S89
Non-destructive effect when the pipe screw effect and specification
Q15/T 3316 - 193S
ZB[12032[96$
Light industry products gold mesh layer and oxide film height measurement proof force Dali jade law level tight texture can be
<standard very adopt a dead crown meaning,
3.1 titing
Used to connect one or more zero (parts),
National Quality and Technical Supervision Bureau 20001121 approved 20010501 real gun
3.2 horizontal joint explosion effect jointtiaztlread
Conform to C17306 frequency mosquito.
3.3 fastening velvet faateaingtarcad
Conform to GB/T7306 screw effect.
GB/T 32B7—2000
3.4 temporary parts specification fitting size, frequency mosquito size code designation The export size code should comply with the effective mark of T7306/T7306. 3.5 Nominal size: DN
See GB14? The meaning is.
1 Nominal size: "N\" is a general combination of a variable number of meters, 2 The relationship between the basic size (i.e. type: code) and the public diameter (see Table 1) 1
Parts size
Public diameter, DV
3.6 Inflated pipe fittings
3/81/2
Parts specifications and nominal diameter
In the end of the inner thread pipe fittings, or as an additional material in the form of an edge or return (see Figure 1). e) t
3.7 帅rh
Figure 1 Inflated pipe fittings
b Country edge
In order to facilitate installation or manufacturing, the material that can be attached to the outer side or inner screen of the pipe fittings and along the axis, 3.8 u+
General parts of the inner thread or outer thread period. For the transfer of parts, components or other components, the connection should comply with GB 7306. 3.9 Main pipe un
Two outlets on the main axis of the three-way or bottle. 3.10 Branch pipe
Two-way or four-way outlet,
3.1 Angle rhamitr
The row of the entrance is marked to prevent the dry assembly from damaging the block. 3.12 End-to-end dimension face-to-zaceinension The distance between two coaxial lines
3.13 Face-to-center dimension facctoatrudision The distance between the normal face of the pipe at the white end and the center axis of the outlet at an angle. 3.14 Installation length leyinglenxth
The average distance between the surface of the pipe and the axis of the pipe after installation, the average distance between the two ends of the pipe (compared with 5.5.2), 2
4 Product classification
4.1 According to surface condition treatment
Fitting symbol: Fr
Heat-tight fitting number: Z5.
4.2 According to structural typebzxZ.net
GB/T 3287—2000
These fittings and symbols are given in Table 2. These symbols are related to pipeline identification and can be used for marking (see 4.3.1). Table 2
Qiyueli
Danhujiu
Fashuangwan
C1t130)
A1/45*12)
134:1a>
F1(131)
Symbol (code)
A4(92)
B1(130)
A4/45 *121)
G1/45*(41)
G445()
External head
External stomach silk
Internal contact
Conch day
M2(220)
MR—L121)
Ualrss:
N4224:
CB/T 3287—2000
Table 2 (Sensitivity
1:2(337
1A2(9/3
M1(529g:
1(340)
LA:196
m(245)
8(245)
:2t541
LA2198:
4.3 Product marking
4.3.1 Marking contents
4. 3.1.1 Contents of the label
GB/T32B7—2000
Table 2 (Yuan)
Fu Dan (code)
Za2(22)
The pipe fittings that comply with this standard shall be indicated as follows and marked with the following contents:) a) Allowable pipe type (see table)
b) Product standard (GB/3287);
) Symbols see Table 2)
) Fitting specifications (see Appendix A);
) Table status see 1.1
f Design symbol (51)
4.3.1.2 Allowable content
According to the contents marked in 4.3.1.1, the allowable use code (see Table 2) and the nominal pressure code corresponding to the pipe specification. 4.3.2 Notes on markings
4.3.2.1 Same size, that is, all outlets have the same specifications. A small rule indicates that 4.3.2.2 There are two different diameter pipe fittings with different outlets, and the connection port is specified by the order of the items (large outlet 7 ~ small outlet). 4.3.2.3 There are more than two outlets. 1: For different reducing pipe fittings, refer to the method 1 in Figure 2. Note: 3. The simplified method is not used when the specified method is used. 4.3.2.4 There are more than one outlet and the main specifications are not checked. The simplified method is as follows: ts) || tt || a) Tee D1 and F1, the main specifications are similar, and the specifications can be large or small. It is stipulated that the specifications should be marked first and then the specifications should be marked. For example, X4 see Appendix AA Appendix A || tt || GB/T3287- 2000
b) Reducing double change E2, it is stipulated that the specifications of the largest outlet should be marked first, and then the two equal smaller outlet specifications should be marked, for example 1 is 14 (see Appendix r) Different light four-way C1. It is stipulated that the specifications of the largest main outlet should be marked first, and then the two equal smaller branch pipe specifications should be marked, such as 1 1 (called AA.
4.3.3 Marking example
) Equal diameter palm text, part specification 2. Color surface, design symbol A: Litou GB/T3287A12.Fc-A
b) 3-way tee, main part specification 2, branch replacement specification 1. Heat lock surface, no design symbol [, = pass GB/T 3287B1-2X×1-7n-C
c) Reducing tee, replacement parts specifications: and environment 3/4. Branch pipe supervision allowed 1/3, according to the color table. Design symbol phased for B to D use), tee (B/3287B1-1×1/2×3/4-Fe-B use method h): two extension GB/328?B1×3/4×1/2-Fc-[5 Technical requirements
5.1 Pipe fittings materials
5.1.1 Pipe fittings should be used in accordance with CB /T9440 other specifications of soft materials 5.1.2) the use of the secret plate system to save the clean loss of the required technology to the brand (see 5.4.1):
KTB100-0 or KT850-04 for white heart can be the most stamped iron KTH350-10 or KTH30C-06 for black heart can be fake cast iron, 5.1.2 use of mechanical properties of not less than 5.1.1 specified other non-ferrous metals, allow for specifications not greater than /8 straight temporary parts, but not including flexible joints.
5.2 hot chain zinc layer
pipe fittings require chain zinc furnace layer, should be used hot load zinc process 2, well pipe platform engraving requirements. Note 1. For pieces of gold-plated material (more, 1.3. the content of the zinc layer shall be subject to agreement with the ordering party 5.2.1 The percentage content of micro-element in the zinc layer of the zinc coating may not exceed the following maximum values: (Al)
Sulphur (S)
Ag
Cadmium (Ca)
Lead (Ph)
Mercury (Sm)
1.6%, in some cases 2.8%
5.2.2 The mass of the zinc layer on the relevant surface of the coating shall not be less than 500%/m2, and the mass of zinc in five pieces of the coating shall be taken as the half-mean value, which is equivalent to an average coating thickness of 7m and a minimum of 40g/m2 (6) for individual samples
The thickness of the coating shall be calculated according to formula (1): （)
,—zinc layer thickness,
unit and the zinc layer of the surface is more than 2/m
5.2.3 The surface layer of the connected pipe segment should be continuous, and the inner surface should be free of thorns and non-metallic adhering materials. 5.3 Anti-rust treatment of the surface
The surface should be treated with anti-rust treatment, and the anti-rust material should not contain polycyclic carbon or compounds. 6
GB/I3287·2000
The design symbols (see Table 3) of the selected materials (die.1.1) and threads (see 5..II) should be recognized by the central identification of the general parts. Table: Design symbol
Segment design code
Smoke pattern type
Li Ke work
KTI400->5 KT350-1
K'TK5 4*KTH5-
KTAX O or KTI-1G
KTK5C 4 Note: For the parts with external explosion, the design of the same certificate with internal width control, and the design of the parts with the same design and the same design are only for the promotion of the same design and the same design of the parts, 5.4-2 shall be in accordance with the provisions of Appendix A. 5.43 The outer diameter of the inner threaded part shall be reinforced with square edges! See Figure 1) The end of the corner is angular, and the shape can be flat or alternate. The square shape can be shown in the shape of _ and Za) 5.4.4 The door can be made without any addition, and the height of the arm shall not exceed the height of the edge of the agent: 5.4.5 The shape of the lead and the certificate can be concave. The surface of the work is allowed. 5.4.6 Appendix A A3 and Appendix A A8 give two typical live core sockets and their markings. The design and material of other sockets should also be based on the dimensions and other requirements provided in Appendix A A- and Appendix A4 A19. This kind of joint has no positive marking.
5.5 Length and tolerance
5.5.1 The main dimensions of the pipe fittings are shown in Appendix 4. No specific dimensions are shown, which are determined by the manufacturer. The manufacturer does not specify the maximum or minimum dimensions. The dimensions from end to end, from face to center are not enough. Table 4: The dimensions of the joint and from face to center are not enough. The tolerances given for the dimensions and design of the fittings are not allowed.
Basically only
es 3℃
2~39~
2-56~*75 >75- 162 1 143~150150--≤200=2. 5
5.5.2 Length of the purple guest (z; Monthly author obtains materials and guidance during the period: its accuracy determines the work 5.5. 1 The tolerance of the middle age and the effective tolerance specified in CR/T73C6, the size given in the projection A is the average of the pipe end to the pipe end (Figure 3, the pipe end (Figure):
Figure 3 has an angle to play the pipe cabinet connection length GBT3287-200
The installation length of the shaft connection
This installation dimension is the small flat length from the face to the end or from the face to the center, and the length is the size of the connection B/ plus the adjustment (Table 5). Table 5 Matching length
Specifications
Length m
5.5.3 The width of the plane S depends on the general world and is determined by the manufacturer. 2. 2
5.5.3.1 The bottom of the vertical surface of the attached old is rectangular, and the plane of the other parts less than or equal to 3/4 should be hexagonal, and the plane greater than 1/3/4 can be hexagonal and octagonal. The flat front of the joint and other parts (except for the connecting media) is six-sided, eight-sided or side-sided, 5.5.3.2 The minimum length of the three flat (6 positive and negative measurements of the dead table, the locking nut of any form shall not make the plated flat white thickness less than the table given white as the scale, the minimum flat thickness of the core parts shall be reduced to the flat thickness of the hand nm
5.6 The selection criteria for the end effect
5-E.1 The screw seat of the receiving part shall comply with GB/T0 .16.1、G3/Jiang 70E.2 is specified, the outer shape is fixed (R. The internal thread can be round or conical).
5.6.2 The effect of the nut and the nut matching shall comply with the provisions of B/730, and the metric thread shall comply with G/192.G/193G/19 and G/-57 (the number of internal and external effects is 7 levels). The locking screw product shall comply with GB/T73C7:
5. The outer thread of the pipe shall be accurate, and the deviation of the angle shall not exceed "5\5.8". The pipe thread must be angular, and the thread area is small. 90% of the straight line should be larger than the second line. The minimum external chamfer is 60°, the diameter of the end chamfer should be less than the effective diameter of the end face, 5.9 The parts shall not contain any harmful materials to the user, and the parts shall be as light as possible, especially the gas, crack and other harmful defects shall not be evaluated. The above-mentioned defects shall be evaluated to ensure the performance rate: 5.10 Performance requirements 5.10.1 All pipe fittings shall meet the maximum rated working pressure and temperature range listed in the table. The pressure value between the center and the center of the pipe fittings shall be determined by the linear method according to Figure 5. The temperature of the pipe fittings shall not be lower than the normal use temperature. For special prohibitions on the use of low temperature, the ordering party shall confirm the specified conditions in the ordering agreement.
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