PSL1 and PSL2 in spiral steel pipes are two different quality levels of pipeline products, and their main differences lie in the requirements of chemical composition, mechanical properties, non-destructive testing, and other aspect... [阅读全文]

The PE coating of external PE and internal EP anti-corrosion steel pipes has excellent corrosion resistance and water resistance, which can effectively resist the erosion of chemicals such as acid, alkali, and salt; The EP coati... [阅读全文]

Steel sleeve steel prefabricated directly buried steam insulation pipe belongs to a type of underground directly buried pipeline. It can also be buried underground without concrete structure, that is, the thermal expansion of the... [阅读全文]

The anti-corrosion spiral steel pipe used for sewage transportation adopts advanced anti-corrosion coating technology, such as epoxy resin coating, polyethylene powder coating, etc., which can effectively resist the erosion of acid,... [阅读全文]

D in spiral steel pipes represents the actual diameter of the steel pipe, while DN represents the nominal diameter of the steel pipe (the nominal outer diameter does not represent the actual diameter). The nominal diameter, als... [阅读全文]

The spiral steel pipe used in TPEP anti-corrosion steel pipe is produced using double-sided submerged arc welding technology, with smooth and uniform welds. Through strict selection of welding flux, the strip steel is welded into... [阅读全文]

Both internal and external welding of spiral steel pipes for 3PE anti-corrosion steel pipes are carried out using single wire or double wire submerged arc welding to obtain stable welding specifications. The welded seams are all... [阅读全文]

The chemical composition of spiral seam submerged arc welded steel pipes is clearly defined for each grade based on their different uses and working conditions, to ensure that their performance and corrosion resistance meet the ... [阅读全文]

DN1600 polyurethane rigid foam prefabricated buried insulation pipes for hot water transportation belong to the large diameter insulation pipeline series. The working steel pipe is a steel pipe with an outer diameter of 1620mm. T... [阅读全文]

Spiral seam welded steel pipe, abbreviated as spiral steel pipe, is one of the common steel pipe products in fluid transportation pipelines such as oil, natural gas, water, hot water, sewage, steam, air, etc. Its English name ... [阅读全文]