Standard No.:	GB/T 17425-1998
Chinese Name:	货车车钩、钩尾框采购和验收技术条件
English Name:	Purchase and acceptance of couplers and coupler yokes for freight service
Professional Classification:	S31 Car coupler and shock absorber
Professional Classification:	GB National Standard
ICS Classification:	45.060
Issued by:
Issued on:	1998-07-06
Implemented on:	1999-04-01
Status:	ABOLISHED
Replace:	TB/T3170-2007()
Replace By:	TB/T3170-2007()
Replace By Date:
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the requirements for purchase and acceptance of couplers, coupler parts and coupler yokes for railway freight cars.

This standard is applicable to couplers, coupler parts and coupler yokes for railway freight car made of Grades C and E steel, and is also applicable to locomotive couplers.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, all editions indicated are valid. All standards are subject to revision, and the parties coming to an agreement based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards below.

GB/T 229-1994 Metallic Materials - Charpy Notch Impact Test
GB/T 6803-1986 Standard Method for Conducting Drop Weight Test to Determine Nil Ductility Transition Temperature of Ferritic Steels
GB/T 8363-1987 Metallic Materials; Drop-weight Tear Tests of Ferritic Steels
GB/T 9444-1988 The Methods for Magnetic Particle Testing and for Specifying Quality Levels of Steel Castings
TB/T 1583-1996 Technical Specification for Repair Welding of Steel Castings for Rolling Stock
TB/T 1669-1985 Gauge for No.13 Coupler
TB/T 2594-1996 Low Alloy Cast Steel for General Structure of Rolling Stock
TB/T 2604-1996 Gauge for No.13 Coupler Yoke
AAR M118-91 Coupler Knuckle Pin and Yoke Key

3 Technical Requirements

3.1 Couplers and coupler yokes shall be manufactured in accordance with this standard and the product drawings approved by the Ministry of Railways.

3.2 Manufacturer's approval

All coupler and coupler yoke manufacturers shall get approval of competent department of Ministry of Railways.

During approval application, the manufacturer shall submit the result of first two groups of periodic test specified in 4.3. See normative Annex A for the submitted data format.