Fittings Standards

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

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 B16.9 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

ANSI B16.21 Non-Metallic Flat Gaskets for Pipe Flanges

ANSI B16.47 Large Diameter Steel Flanges (NPS26 through NPS60)

ANSI B16.1 Cast Iron Pipe Flanges and Flanged Fittings

API 601 Metallic Gaskets for RF Pipe Flanges and Flanged Connections

API 6A Specification for Wellhead and Christmas Tree Equipment

API 605 Large Diameter Carbon Steel Flanges