BS EN ISO 9809-1. Gas cylinders and tubes. Refillable seamless steel gas cylinders and tubes. Design, construction and testing. Part 1. Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa— 52 стр.
Transportable gas cylinders -- Compatibility of cylinder and valve materials with gas contents -- Part 4: Test methods for selecting steels resistant to hydrogen embrittlement— 26 стр.