Petroleum & Petrochemical Spiral Steel Pipe

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

General low-pressure fluid transmission, 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 the transmission of low-pressure fluids such as water, gas, air, and steam.

Spiral steel pipes commonly adhere to standards such as: 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 Oil and Gas Industry Transportation, API-5L [American Petroleum Institute, also known as Pipeline Steel Pipes; divided into PSL1 and PSL2 grades]), and 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, formed into pipes through normal temperature spiral rolling, and joined by 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.