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

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

Common standards for spiral steel pipes generally include: SY/T5037-2023 (Ministry Standard, also known as Spiral Seam 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 Petroleum and Natural Gas Industry Transportation, API-5L [American Petroleum Institute, also known as Pipeline Steel Pipes; 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 for Oil and Gas Industry Transportation

Piling spiral-welded steel pipes (SY5040-2008) are manufactured from hot-rolled steel strip coils, formed through cold-rolled spiral process, and are joined by double-sided submerged arc welding or high-frequency welding. They are used for steel pipes in civil engineering structures, docks, bridges, and other foundation piles.