Hope these help -
ISO 11114-1: Transportable gas cylinders--Compatibility of cylinder and valve materials with gas contents--Part 1: Metallic materials
[link Point to another website Only the registered members can access]
ISO 11114-2: Transportable gas cylinders-- Compatibility of cylinder and valve materials with gas contents--Part 2: Non- metallic materials
[link Point to another website Only the registered members can access]



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