Piling Spiral Steel Pipe

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 welded steel pipes according to GB/T3091-2015 and SY/T5037-2023, manufactured using double-sided automatic submerged arc welding for 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 Conveyance), GB/T3091-2015, GB/T9711-2023 PSL1 and PSL2 (National Standard, also known as Steel Pipes for Oil and Gas Industry Conveyance, API-5L - American Petroleum Institute, also known as Pipeline Steel; divided into PSL1 and PSL2 levels), SY/T5040-2008 (Pile Spiral Welded Steel Pipes).

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

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

Piling Spiral Welded Steel Pipes (SY5040-2008) are manufactured from hot-rolled steel strip coils as billets, commonly formed into spiral shapes at room temperature, and produced 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.