T/SSEA 0022-2019 Oil and gas extraction valve-type alloy structural steel

Scope

Main technical content: This standard is based on the requirements for valve body steel in oil and gas extraction. On the basis of referring to the national standard "Alloy Structural Steel" (GB/T 3077), and combining the special needs of valve body steel in oil and gas extraction, the technical indicators have been strengthened and expanded. This enhances the connection between raw material manufacturers and downstream users, making the standard more targeted and practical. This standard specifies the ordering content, dimensions, shapes, weights, and allowable deviations of alloy structural steel for oil and gas extraction valves; technical requirements; test methods; inspection rules; packaging; marking; and quality certificates. It is applicable to the continuous casting round billets (hereinafter referred to as "round billets") of alloy structural steel with a diameter of not less than 250mm, and hot-rolled round steel of alloy structural steel with a diameter of not more than 380mm, used in the manufacture of oil and gas extraction valves.

Development Information

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