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GB/T 5638-2008Flared couplings - Swivel branch tee (English PDF)

扩口式组合三通管接头

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Issued by

AQSIQ; SAC

Level / Type

National · Recommended

Issue date

May 7, 2008

Implementation date

November 1, 2008

Scope

GB/T 5638-2008 is the English-translated version of 扩口式组合三通管接头.

GB/T 5638-2008 specifies the dimensions, marking and technical requirements of flared swivel branch tee couplings and coupling bodies for hydraulic fluid power and general-purpose piping systems with tube outside diameters of 4 mm to 34 mm and maximum working pressures of 3.5 MPa to 16 MPa.

Table 1 and Figures 1 to 4 give the dimensions for tube sizes from 4 mm to 34 mm: threads from M10×1 to M45×2 with their D1 diameters (±0.13), bore and length dimensions, type A and type B body lengths, and across-flats values.

The flared end of the body follows GB/T 5652, while the marking and all technical requirements refer to GB/T 5653; the related sleeve and nut standards are GB/T 5646, GB/T 5647 and GB/T 5648.

It replaces GB/T 5638.1-1985 and GB/T 5638.2-1985, merging the coupling and body standards, changing the English name, adding a hexagonal blank, adjusting tolerances and moving the surface roughness requirements to GB/T 5653.

Issued on 7 May 2008, in force since 1 November 2008. Classification: ICS 21.060.60, CCS J 15. The document runs to 6 pages, delivered complete in English translation.

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Document preview — GB/T 5638-2008

National Standard of the People's Republic of China

ICS: 21.060.60
Classification: J 15
Replacing: GB/T 5638.1-1985, GB/T 5638.2-1985

Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Dimensions
4 Designation
5 Technical requirements

3 Dimensions

4 Designation

5 Technical requirements

Foreword

This standard is one of the series of standards for flared couplings.

This standard is a revision of GB/T 5638.1-1985, Flared swivel tee coupling, and GB/T 5638.2-1985, Flared swivel tee coupling body. The main revisions are as follows:

- the contents of the two standards have been merged;

- the English name has been changed;

- a hexagonal blank structure has been added;

- some parameters that should be controlled by the manufacturer have been removed;

- some tolerances have been adjusted in accordance with the current standards on tolerances and fits;

- the indication of surface roughness has been removed; the surface roughness requirements are given in GB/T 5653, Flared couplings - Specification.

From the date of its implementation, this standard replaces GB/T 5638.1-1985 and GB/T 5638.2-1985.

This standard was proposed by the China Machinery Industry Federation.

This standard is under the jurisdiction of the National Technical Committee for Standardization of Pipeline Fittings.

Responsible drafting organizations of this standard: Haiyan Pipe Fittings Manufacturing Co., Ltd., and China Machinery Productivity Promotion Center.

Participating drafting organizations of this standard: Eaton (Ningbo) Fluid Connectors Co., Ltd., Jiaxing Maisite Pipe Fittings Manufacturing Co., Ltd., Jianhu County Tejia Hydraulic Pipe Fittings Co., Ltd., Haiyan Gaobo Pipe Fittings Co., Ltd., Haiyan County Haiguan Pipe Fittings Manufacturing Co., Ltd., and Jiaozuo Lutong Hydraulic Fittings Co., Ltd.

Principal drafters of this standard: Geng Zhixue, Li Weirong, Zhou Shunhua, Tao Zhongming, Zuo Xuejun, Ruan Haofeng, Zhou Jianfei, Wang Limin and Feng Feng.

The previous editions of the standards replaced by this standard are:

- GB/T 5638.1-1985, GB/T 5638.2-1985.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

Referenced standards

Normative references

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