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

Generally used for the transmission of low-pressure fluids, spiral seam submerged arc-welded steel pipes in accordance with GB/T3091-2015 and SY/T5037-2023, these pipes are manufactured by double-sided automatic submerged arc welding and are intended for the transmission of general low-pressure fluids 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 General 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 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 the Ministry Standard.

GB/T9711-2023 PSL1/2 Standard Spiral Steel Pipe for Oil and Gas Industry Transportation

Piled Spiral Welded Steel Pipe (SY5040-2008) is manufactured from hot-rolled steel strip coils, formed by normal temperature spiral rolling, and produced via double-sided submerged arc welding or high-frequency welding. It is used for steel pipes in civil engineering structures, docks, bridges, and other foundation piles.