Spiral Steel Pipe for Oil & Petrochemical Industry

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

General low-pressure fluid transportation, spiral seam submerged arc welded steel pipes according to GB/T3091-2015 and SY/T5037-2023, produced by double-sided automatic submerged arc welding for general low-pressure fluid conveyance such as water, coal 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 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; with two levels: PSL1 and PSL2), 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 a 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 made from hot-rolled steel strip coils as billets, formed by normal temperature spiral welding, and produced 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.