Spiral Steel Pipe for Petroleum & Petrochemical Industry

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

General low-pressure fluid transportation, utilizing spiral-welded submerged arc steel pipes according to GB/T3091-2015, SY/T5037-2023, and manufactured with 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 Welded Steel Pipe for Ordinary Fluid Transportation), GB/T3091-2015, GB/T9711-2023 PSL1 and PSL2 (National Standard, also known as Steel Pipe for Oil and Gas Industry Transportation, API-5L [American Petroleum Institute, also known as Pipeline Steel Pipe; it is divided into PSL1 and PSL2 levels]), and SY/T5040-2008 (Spiral Welded Steel Pipe for Piling).

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.

Piled spiral-welded steel pipes (SY5040-2008) are produced from hot-rolled steel strip coils as billets, commonly formed by low-temperature spiral rolling, and are manufactured using 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.