Spiral-welded steel pipes for pressure fluid conveyance, 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焊接钢管 GB/T3091-2015, SY/T5037-2023, made by double-sided automatic submerged arc welding process, for low-pressure fluid transportation 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 Pipeline Steel 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, commonly referred to as a Ministry Standard.

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

Spiral-welded steel pipes for piles (SY5040-2008) are produced from hot-rolled steel strip coils as billets, formed into pipes through normal temperature spiral rolling, and are made via double-sided submerged arc welding or high-frequency welding. They are used for steel pipes in civil engineering structures, wharfs, bridges, and other foundation piles.