Standard Classification of Spiral Submerged Arc Welded Pipes

Standard Classification of Spiral Submerged Arc Welded Pipes

SY5036-83 spiral submerged arc welded steel pipe for pressure fluid transportation is mainly used for pipelines conveying oil and natural gas; SY5038-83 spiral seam high frequency welded steel pipe for pressure fluid conveyance is welded by high frequency lap welding method; SY5036-83 spiral seam submerged arc welded steel pipe for pressure fluid conveyance is high frequency welded, steel pipe has strong bearing capacity, good plasticity, and is easy to be welded and processed; Submerged arc welded steel pipes SY5037-2000 for general low pressure fluid transportation, such as water, gas, air and steam, are manufactured by double-sided automatic submerged arc welding or single-sided welding.

The commonly used standards of spiral steel pipe are generally divided into: SY/T5037-2000 (industry standard, also known as spiral submerged arc welded steel pipe for common fluid transmission pipeline), GB/T9711.1-1997 (national standard, also known as technical conditions for delivery of pipelines in oil and gas industry Part I: Grade A steel pipe (strictly required GB/T9711.2 B pipe and GB/T9711.3 C pipe), API-5L (American Petroleum Association standard). SY/T5040-92 (spiral submerged arc welded pipe for pile) is a spiral submerged arc welded pipe (SY5036-83), which is made of hot rolled steel strip coil and is often spirally formed at high temperature. It is welded by double-sided submerged arc welding (DSAW) for pressure fluid transmission. Steel pipe has strong pressure bearing capacity and good welding performance. It is safe and reliable to use after various strict scientific tests and tests. The steel pipe has large diameter, high conveying efficiency and saves investment in laying pipelines. It is mainly used for pipelines to transport oil and natural gas.