T/SSEA 0022-2019 (English Version)

Scope: This standard starts from the need for steel for valve bodies in oil and gas production. Based on the national standard "Alloy Structural Steel" (GB/T3077) and combined with the special needs of steel for valve bodies in oil and gas production, this standard tightens the technical indicators. and expansion, which strengthens the connection between raw material manufacturers and downstream users, making the standards more targeted and practical. This standard specifies the ordering content, size, shape, weight and allowable deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of alloy structural steel for oil and gas production valves. It is suitable for manufacturing alloy structural steel continuous-cast round billets with a diameter of not less than 250mm (hereinafter referred to as "round billets") for oil and gas production valves, and alloy structural steel hot-rolled round bars with a diameter of not more than 380mm. .

T/SSEA 0022-2019 history