Standard No.:	GB/T 17241.7-1998
English Name:	Specifications for cast iron pipe flanges
Chinese Name:	铸铁管法兰 技术条件
Chinese Classification:	J15    Pipeline fittings
Professional Classification:	GB    National Standard
ICS Classification:	23.040.60 23.040.60    Flanges, couplings and joints 23.040.60
Issued by:	State Technical Supervision Bureau
Issued on:	1998-03-05
Implemented on:	1998-1-2
Status:	superseded
Superseded by:	GB/T 17241.2-2024 Cast iron pipe flanges—Part 2: Class designated GB/T 17241.1-2024 Cast iron pipe flanges—Part 1:PN designated
Superseded on:	2024-11-1
Abolished on:	2024-11-01
Superseding:	GB 4216.1-1984 Nominal pressure of gray cast iron pipe flange - Test pressure and working pressure GB 12386-1990 Ductile iron pipe flange - Pressure-temperature grade GB 12384-1990 Technical Conditions for Ductile Iron Pipe Flanges GB 12387-1990 Asbestos rubber gaskets for ductile iron pipe flanges with raised face GB 4216.10-1984 Specification for grey cast iron pipe flanges and gaskets
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	184.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the materials, dimensional tolerance, test and inspection methods and other technical requirements of cast iron pipe flanges and it is applicable the cast iron pipe flanges specified in GB / T 17241.2~17241.6. 2 Normative References The provisions involved in the following standards will become the provisions of this standard by quoting in this standard. When published, all the shown versions are valid. All the standards will be modified, and all parties using this standard shall discuss the possibility of using the latest version.

1 Scope 2 Normative References 3 Flange Materials 4 Dimensional Tolerance 5 Flange Sealing Face 6 Processing of the Flange Rear Face 7 Gaskets for Flanges 8 Flange Test 9 Inspection and Acceptance of Flange 10 Marking Appendix A (Normative) Steel Pipe Flanges - Pressure-temperature Ratings