Pipe Joint Standards
Pipe Joint Standards
The following Standards are relevant to pipe flanged joints:
RP 42-2 Bolting for Flanged Joints (Inch Series)
GS 142-4 Flanges
GS 142-5 Fittings
RP 42-1 Piping Systems
GS 142-7 Gaskets and Jointing
Below American Standards(ANSI/API Standards) are used for the standardization of pipe joints:
ANSI BI.1 Unified Inch Screw Threads (UN and UNR Thread Form)
ANSI BI.20.1 Pipe Threads, General Purpose (Inch)
ANSI B16.5 Pipe Flanges and Flanged Fittings
ANSI B16.21 Non-Metallic Flat Gaskets for Pipe Flanges
API 601 Metallic Gaskets for RF Pipe Flanges and Flanged Connections
API 6A Specification for Wellhead and Christmas Tree Equipment
ANSI B16.47 Large Diameter Steel Flanges (NPS26 through NPS60)
ANSI B16.9 Factory made Wrought Steel Butt Welding Fittings
ANSI B16.11 Forged Steel Fittings, Socket Welding and Threaded
ANSI B16.20 Ring-Joint Gaskets and Groves for Steel Pipe Flanges
API 605 Large Diameter Carbon Steel Flanges
ANSI B16.1 Cast Iron Pipe Flanges and Flanged Fittings
Below British Standards are also used for the standardisation of pipe joints:
BS 1560 Steel Pipe Flanges and Flanged Fittings
BS 3381 Metallic Spiral Wound Gaskets for Use with Flanges to BS 1560
BS 1832 Oil Resistant Compressed Asbestos Fibre Jointing
BS F125 Rubber Bonded Compressed Asbestos Fibre Jointing
BS 3293 Carbon Steel Pipe Flanges (over 24” NB) for the Petroleum Industry
BS 3799 Steel Pipe Fittings, Screwed and Socket-Welded for the Petroleum Industry
BS 1580 Specification for Unified Screw Threads
Reference : BP Amoco Piping Joints Handbook (Document No. D/UTG/054/00)
by online welding courses – non destructive testing
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