L290 spiral steel pipe

Description: The strength of L290 spiral steel pipes is generally higher than that of straight seam welded pipes. They can produce welded pipes with larger diameters using narrower billets, and can also produce welded pipes with different diameters using billets of the same width.

The commonly used standards for spiral pipes nowadays are generally divided into: SY/T5037-2000 (ministerial standard, also known as spiral seam submerged arc welded steel pipes for ordinary fluid transportation pipelines), GB/T9711.1-1997 (national standard, also known as petroleum and gas industry transportation steel pipes delivery technical conditions part: steel pipes (up to now, there are GB/T9711.2 Class B steel pipes with strict requirements), API-5L (petroleum association, also known as pipeline steel pipes; which are divided into two levels: PSL1 and PSL2) SY/T5040-92 (Spiral submerged arc welded steel pipes for piles).