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GB/T 3287-2024: Malleable cast iron pipe fittings
Status: Valid GB/T 3287: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3287-2024 | English | 1349 |
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Malleable cast iron pipe fittings
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GB/T 3287-2024
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| GB/T 3287-2011 | English | 949 |
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Malleable cast iron pipe fittings
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GB/T 3287-2011
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| GB/T 3287-2000 | English | RFQ |
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Malleable cast iron pipe fittings
| Obsolete |
GB/T 3287-2000
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| GB/T 3287-1982 | English | RFQ |
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Technical requirements of malleable cast iron pipe fittings
| Obsolete |
GB/T 3287-1982
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PDF similar to GB/T 3287-2024
Basic data | Standard ID | GB/T 3287-2024 (GB/T3287-2024) | | Description (Translated English) | Malleable cast iron pipe fittings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y71 | | Classification of International Standard | 23.040.60 | | Word Count Estimation | 67,659 | | Date of Issue | 2024-10-26 | | Date of Implementation | 2025-11-01 | | Older Standard (superseded by this standard) | GB/T 3287-2011 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 3287-2024: Malleable cast iron pipe fittings---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3287-2024
ICS 23.040.60
CCSY71
National Standard of the People's Republic of China
Replaces GB/T 3287-2011
Malleable iron pipe fittings
Released on October 26, 2024
Implementation on November 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Product Categories 3
5 Requirements 7
6 Test Methods 13
7 Inspection Rules 16
8 Marking, packaging, transportation, storage 17
Appendix A (Normative) Type Ⅰ Pipeline Connectors, Types and Dimensions 19
Appendix B (Normative) Type II dimensions of pipe connectors 29
Appendix C (Normative) Type III dimensions of pipe connectors 54
Appendix D (Normative) Ductility (Flattening Rate) Test 58
Appendix E (Informative) Inert Fillers 59
Reference 61
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 3287-2011 "Mallet Iron Pipe Connectors". Compared with GB/T 3287-2011, except for the structural adjustment and
In addition to editorial changes, the main technical changes are as follows.
--- Changed the scope (see Chapter 1, Chapter 1 of the.2011 edition);
--- Added the terms and definitions of wide side (throat) and ductility (flattening rate) (see 3.2, 3.10);
--- Deleted the terms and definitions of pipe fitting specifications and installation lengths (see 3.2 and 3.11 of the.2011 edition);
--- Added UC copper core unions and UCA copper core union elbows classified by structural type (see Table 1, Table 2 of the.2011 edition);
--- Added classification by product type (see 4.3);
--- Changed the graphic mark of the reducing pipe fittings with more than two outlet ports and different outlet specifications (see 4.4.2.3, Figure 2,
4.3.2.3 and Figure 2 of the.2011 edition);
--- Changed the marking example (see 4.4.3, 4.3.3 of the.2011 edition);
--- Changed the lead content of the zinc layer (see 5.2, Table 4, 5.2.1 of the.2011 edition);
--- Deleted the approximate calculation formula for the average coverage thickness of the zinc layer and the mass of the zinc layer per unit area (see 5.2.2 of the.2011 edition);
--- Added some material grade requirements (see 5.4.1, Table 5);
--- Changed the dimension of the width across flats of the wrench flats (see 5.4.6, 5.5.3 of the.2011 edition);
--- Changed the installation length diagrams Figures 3 and 4, changed "average distance" to "theoretical distance", and deleted the matching length table 5
(See 5.4.8, Figures 3 and 4, and 5.5.2, Figures 3 and 4, and Table 5 of the.2011 edition);
--- Increased the design installation torque corresponding to different pipe specifications (see 5.4.9);
--- Added recommendations for the adoption of the test gauge system (see 5.6.1, 5.6.2);
--- Changed the title of 5.10 from "Manufacturing" to "Appearance" (see 5.10, 5.10 of the.2011 edition);
--- Increased performance requirements (see 5.11);
--- Changed the description of the detection method of trace elements in hot-dip galvanizing and the measurement method of hot-dip galvanized layer (see 6.2, 6.2 of the.2011 edition);
--- Changed the sealing pipe thread, added the full-thread type thread gauge and the inspection and judgment standard of the internal thread of type III pipe fittings (see 6.6.1,.2011 edition
6.3.1);
--- Changed the non-sealed pipe thread and added the full-profile thread gauge (see 6.6.2, 6.3.2 of the.2011 edition);
--- Added metric threads (see 6.6.3);
--- Changed the performance test method and added the ductility (flattening rate) test method (see 6.11, Chapter 6 of the.2011 edition);
--- Changed the inspection rules (see Chapter 7, Chapter 7 of the.2011 edition);
--- Deleted the general rules for pipe fitting size and installation length (see Chapter 8 of the.2011 edition);
--- Changed the requirements for packaging materials (see 8.2, 9.2 of the.2011 edition);
--- Changed the type and size of pipe connector type I (see Appendix A, Appendix A of the.2011 edition);
--- Added the pipe connector type II type size, pipe connector type III type size and ductility (flattening rate) test (see
Appendix B, Appendix C, Appendix D).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Light Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Hardware Products (SAC/TC174).
This document was drafted by. Meide Group Co., Ltd., China Hardware Products Association, Hebei Jianzhi Casting Group Co., Ltd., Foshan Quality
Metrology Supervision and Testing Center, Yunnan Yunhai Malleable Steel Co., Ltd., Linyi Hongsheng Casting Co., Ltd., Hong Kong and China Investment Co., Ltd., Shandong Hardware and
Weighing Instrument Industry Association, Tianjin Fire Protection Research Institute of the Ministry of Emergency Management, Jinan Pingyin County Malleable Steel Factory, and Yuhuan City Quality and Technical Testing Center.
The main drafters of this document are. Kong Linglei, Wang Ning, Huang Yonghong, Liu Runfeng, Wang Lei, Guo Yingyun, Ai Chenguang, Yang Zhixiong, Li Xiaodong, Yin Shanjiang,
Hu Minhui, Zou Mingchen, Luo Zongjun, Dong Jiayan, Jiang Zhanhui, and Chen Fengyu.
The previous versions of this document and the documents it replaces are as follows.
---First issued in 1982 as GB/T 3287-1982;
---In the first revision in.2000, GB/T 3288-1982 "Acceptance Rules for Malleable Cast Iron Pipe Connections" was incorporated.
GB/T 3289.1~3289.39-1982 "Types and dimensions of malleable cast iron pipe connectors";
---Second revision in.2011;
---This is the third revision.
Malleable iron pipe fittings
1 Scope
This document defines the terms and definitions of malleable cast iron pipe fittings (hereinafter referred to as "pipe fittings"), establishes the product classification and standardization of pipe fittings,
It specifies the technical requirements for pipe fittings, such as materials, design, appearance, performance, etc., and describes the corresponding test methods, inspection rules, marking, packaging, transportation, etc.
Transport and storage, etc.
This document is applicable to the maximum working pressure of 2.5MPa, nominal size (DN) 6~(DN) 150, operating temperature of -20℃~300℃,
Design, manufacture and acceptance of pipe fittings used for general pipeline connections with media such as water, oil, air, gas, steam, etc.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 192 Basic profile of common thread
GB/T 193 Common thread diameter and pitch series
GB/T 196 Basic dimensions of common threads
GB/T 197 General thread tolerances
GB/T 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on acceptance quality limit (AQL)
GB/T 2829-2002 Periodic Inspection Attribute Sampling Procedures and Tables (Applicable to Inspection of Process Stability)
GB/T 4956 Measurement of coating thickness of non-magnetic coatings on magnetic substrates - Magnetic method
GB/T 7306.1 55° sealing pipe threads Part 1.Cylindrical internal threads and conical external threads
GB/T 7306.2 55° sealing pipe threads Part 2.Conical internal threads and conical external threads
GB/T 7307 55° non-sealed pipe thread
GB/T 9440 Malleable iron castings
GB/T 10125 Artificial atmosphere corrosion test Salt spray test
GB/T 12689 (all parts) Chemical analysis methods for zinc and zinc alloys
GB/T 13825 Metallic coatings - Determination of mass per unit area of hot-dip galvanized coatings on ferrous metals
GB/T 36488 Determination of polycyclic aromatic hydrocarbons in coatings
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Pipe fitting
Products used to connect one or several parts.
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