Heat-Use Spiral Steel Pipe

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

General low-pressure fluid transmission, 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 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 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 levels), and SY/T5040-2008 (Spiral Welded Steel Pipes 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 pipeline transportation.

Piled spiral-welded steel pipes (SY5040-2008) are manufactured from hot-rolled steel strip coils as billets, commonly formed through temperature-controlled spiral rolling, and are joined using double-sided submerged arc welding or high-frequency welding. They are used for the steel pipes in civil engineering structures, wharfs, bridges, and other foundation piles.