Petroleum &石化 Spiral Steel Pipe

Spiral-welded steel pipes for pressure fluid transportation, utilizing GB/T9711-2023 spiral seam submerged arc welding steel pipes, mainly used for oil and natural gas pipeline transportation.

General low-pressure fluid transportation, spiral seam submerged arc welded steel pipes according to GB/T3091-2015 and SY/T5037-2023, manufactured using double-sided automatic submerged arc welding for general low-pressure fluid conveyance such as water, gas, air, and steam.

Common standards for spiral steel pipes generally include: SY/T5037-2023 (Ministry Standard, also known as Spiral Submerged Arc Welded Steel Pipes for Ordinary Fluid Transportation), GB/T3091-2015, GB/T9711-2023 PSL1 and PSL2 (National Standard, also known as Steel Pipes for Oil and Gas Industry Transportation, API-5L [American Petroleum Institute, also known as Line Pipe; divided into PSL1 and PSL2 levels]), and SY/T5040-2008 (Spiral Welded Steel Pipes for Piling).

SY/T5037-2023 is a general standard set by the Ministry of Petroleum, often referred to as the "Ministry Standard."

GB/T9711-2023 PSL1/2 Standard Spiral Steel Pipe, used for oil and gas industry transportation.

Spiral Welded Steel Pipe for Piling (SY5040-2008) is produced by rolling steel strip into billets, then shaped through normal temperature spiral forming, and made via double-sided submerged arc welding or high-frequency welding. It is used for the steel pipes in civil engineering structures, docks, bridges, and other foundation piles.