GB/T 3765-2008 in English

《GB/T 3765-2008卡套式管接头技术条件》由TC237（全国管路附件标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了卡套式管接头的材料、压力�参露纫�求、标记方法、被连接管要求、扳拧尺寸与公差、结构与制造、性能和试验要求、安装说明、采购信息、标志等技术要求。
本标准适用于管子外径为４ｍｍ～４２ｍｍ、最大工作压力为１０ＭＰａ～６３ＭＰａ的液压流体传动和一般用途的管路系统。

1 Scope

This standard specifies the technical requirements of 24° cone connectors, e.g. materials, pressure-temperature requirements, marking method, requirements for connected pipe, dimensions and tolerances of wrench, structure and fabrication, performance and test requirements, installation instructions, purchasing information and sign, etc..
This standard is applicable to the pipeline system for hydraulic fluid power and general use, with pipe outside diameter of 4 mm~42 mm and maximum working pressure of 10 MPa~63 MPa.
Note 1: In the newly-designed hydraulic fluid power system, Type F thread stud end shall be adopted.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 3 Run-outs, Undercuts and Chamfers for General Purpose Metric Screw Threads (GB/T 3-1997, eqv ISO 4755: 1983; eqv ISO 3508: 1976)
GB/T 193 General Purpose Metric Screw Threads - General Plan (GB/T 193-2003, ISO 261: 1998, ISO General Purpose Metric Screw Threads-General Plan, MOD)
GB/T 197 General Purpose Metric Screw Threads-Tolerances (GB/T 197-2003, ISO 965-1: 1998, ISO General Purpose Metric Screw Threads-Tolerances-Part 1: Principles and Basic Data, MOD)
GB/T 230.1 Metallic Rockwell Hardness Test-Part 1: Test Method (Scales A, B, C, D, E, F, G, H, K, N, T) (GB/T 230.1-2004, ISO 6508-1: 1999, MOD)
GB/T 3103.1 Tolerances for Fasteners - Bolts, Screws and Nuts (GB/T 3103.1-2002, idt ISO 4759-1: 2000)
GB/T 3141 Industrial Liquid Lubricants-ISO Viscosity Classification (GB/T 3141-1994, eqv ISO 3448: 1992)
GB/T 3452.2 Fluid Power Systems-O-rings-Part 2: Quality Acceptance Criteria (GB/T 3452.2-2007, ISO 3601-3: 2005, IDT)
GB/T 3639 Seamless Cold-drawn or Cold-rolled Steel Tubes for Precision Applications (neq DIN 2391/1-1994 and DIN 2391/2-1994)
GB/T 5649 Flared Couplings - Lock Nut and Lockup Washer
GB/T 6031 Rubber, Vulcanized or Thermoplastic-Determination of Hardness (Hardness between 10 IRHD and 100 IRHD) (GB/T 6031-1998, idt ISO 48: 1994)
GB/T 7306.1 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints Are Made on the Threads - Part 1: Parallel Internal and Taper External Threads (GB/T 7306.1-2000, eqv ISO 7-1: 1994)
GB/T 7306.2 Pipe Threads with 55 Degree Thread Angle Where Pressure-tight Joints Are Made on the Threads-Part 2: Taper Internal and External Threads (GB/T 7306.2-2000, eqv ISO 7-1: 1994)
GB/T 7307 Pipe Threads with 55 Degree Thread Angle where Pressure-tight Joints are Made on the Threads (GB/T 7307-2001, eqv ISO 228-1: 1994)
GB/T 7631.2 Lubricants, Industrial Oils and Related Products (Class L)-Classification - Part 2: Family H (Hydraulic Systems) (GB/T 7631.2-2003, ISO 6743-4: 1999, IDT)
GB/T 12716 Pipe Threads with the Thread Angle of 60 Degrees Where Pressure-tight Joints Are Made on Threads (GB/T 12716-2002, ASME Bl.20.1: 1992, MOD)
GB/T 17446 Fluid Power Systems and Components – Vocabulary (GB/T 17446-1998, idt ISO 5598: 1985)
GB/T 19674.2 Connections for General Use and Fluid Power-Ports and Stud Ends with Thread-Stud Ends with Elastomeric Sealing (Type A and Type E)
GB/T 19674.3 Connections for General Use and Fluid Power-Ports and Stud Ends with Thread-Stud Ends With Metal-to-metal Sealing (Type B) (GB/T 19674.3-2005, ISO 9974-3: 1996 , IDT)
ISO 1127 Stainless Steel Tubes - Dimensions, Tolerances and Conventional Masses Per Unit Length

3 Terms and Definitions

Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Materials
5 Pressure-Temperature Requirements
6 Marking
7 Requirements for Connected Pipe
8 Dimensions and Tolerances of Wrench
9 Structure and Fabrication
10 Performance and Test Requirements
11 Installation Instructions
12 Purchasing Information
13 Sign
Appendix A (Normative) Dimensions of Type F Thread Port and Stud End
Appendix B (Normative) Test Methods
Appendix C (Normative) Test Record Sheet