Standards and Approvals

Relevant Standards and Approvals include:

AWWA Standards

C219	Bolt, Sleeve Type Coupling for Plain End Pipe
C220	Stainless Steel Pipe, 4-inch and Larger Diameter
C223	Fabricated Steel and Stainless Steel Tapping Sleeves
C226	Stainless Steel Fittings
C606	Grooved and Shouldered Joints
C228	Stainless Steel Flanges
D1XX	Bolted Stainless Steel Tanks - under development
C2FW	Field Welding Stainless Steel (under development)
C2RC	Stainless Steel Repair Clamps (under development)

ANSI/NSF

61	Drinking Water System Components - Health Effects Austenitic and Duplex Stainless Steel approval to Appendix C -

ASTM Specifications

A269	Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A312	Seamless and Welded Austenitic Stainless Steel Pipe
A380	Standard Practice for Cleaning, Descaling and Passivation of Stainless Steel Parts, Equipment and Systems
A403	Wrought Austenitic Stainless Steel Piping Fittings
A774	As-Welded Austenitic Stainless Steel Fittings for General Service
A778	Welded, Unannealed Austenitic Stainless Steel Tubular Products
A789	Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A813	Single and Double Welded Austenitic Stainless Steel Pipe
A815	Wrought Ferritic, Ferritic/Austenitic and Martensitic Stainless Steel Pipe Fittings
A967	Standard Specification for Chemical Passivation Treatments of Stainless Steel Parts
A999	General requirements for Alloy and Stainless Steel Pipe

Tested and approved grades of stainless steel are also listed in UK Drinking Water Inspectorate Regulation 25 for product approval when used in accordance with the Operational Guidelines and Code of Practice.

For further approvals see Plumbing Section.