The wall thickness of spiral seam submerged arc welded steel pipes is usually the lower difference. The general standard spiral seam submerged arc welded steel pipe has a stock lower difference of 1mm, and the national standard... [阅读全文]

16mn spiral welded steel pipes are prone to deviation during production, and how to solve this problem. Firstly, let's take a look at what deviation is. Deviation refers to the deviation of the position of a 16mn spiral welde... [阅读全文]

Large caliber spiral steel pipe is a general term that generally refers to spiral steel pipes with a diameter greater than 1 meter. Spiral steel pipes are made by bending steel strips and then welding them together. Spiral st... [阅读全文]

Spiral steel pipes should undergo mechanical performance tests, flattening tests, and expansion tests before leaving the factory, and meet the requirements of the specifications and rules. The quality inspection method for spiral s... [阅读全文]

In the field of gas transmission, with the emphasis on safety and the advancement of technology, more and more gas EP plastic-coated steel pipes are being used for gas transmission. This is an epoxy resin plastic-coated pipe both inside and outside. This pipe can transport a variety of gases, including: natural gas, gas, biogas, coal gas, etc. It is a multifunctional pipeline material. [阅读全文]

The advantages of grooved clamp connection for plastic-coated steel pipes, compared to connection methods such as welded connection and socket flange for plastic-coated steel pipes, have many commonalities and also more advantages.... [阅读全文]

Polyurethane insulation directly buried prefabricated pipes are widely used in fields such as construction and heating. Firstly, the corrosion resistance performance of polyurethane insulation directly buried prefabricated pipes. Due ... [阅读全文]

The 3-layer PE anti-corrosion spiral seam welded steel pipe is referred to as 3PE anti-corrosion steel pipe. It combines the excellent properties of two anti-corrosion layers, epoxy coating and extruded polyethylene, and combines ... [阅读全文]

Polyurethane prefabricated buried insulation pipes are mainly used for conveying hot water in heating pipelines, usually divided into inlet insulation pipes and return insulation pipes. However, there is no strict distinction requir... [阅读全文]

The 2620 large-diameter water supply coated plastic steel pipe adopts the coating layer composite steel pipe process, which forms a strong plastic coating on the surface of the pipe, effectively preventing the occurrence of pipel... [阅读全文]