Spiral steel tube

Common standards for spiral pipes are generally divided into: SY / T5037-2000 (Ministry standard, also known as spiral seam submerged arc welded steel pipes for general fluid transportation pipelines), GB / T9711.1-1997 (national standard, also known as petroleum and natural gas industry transportation steel pipes Technical conditions for deliveryPart I: Grade A steel pipe (GB / T9711.2 Grade B steel pipe is strictly required), API-5L (American Petroleum Institute, also known as pipeline steel pipe; which is divided into two levels: PSL1 and PSL2), SY / T5040-92 (spiral seam submerged arc welded steel pipe for piles).

 

Texture

The commonly used spiral pipe materials in China are: Q235A, Q235B, Q345, L245, L290, X42, X52, X60, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb.

 

 

Spiral pipe is mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, and urban construction. It is one of the twenty key products developed in China. For liquid transportation: water supply, drainage, sewage treatment engineering, mud transportation, marine water transportation. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural use: for piling pipe, bridge; pier, road, building structure pipe, marine piling pipe, etc.