The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Welded pipes with larger diameters can be produced from na

Compared with plastic pipes and composite pipes, the quality of hot-dip plastic steel pipes combines the advantages of various pipes: the strength of steel pipes and the corrosion resistance, wear resistance, and low fluid resistance of plastic pipes. It is a green pipe with high safety and hygienic

Before the steel structure is painted, to ensure good bonding performance between the coating and the substrate, the surface of the steel to be painted and the nearby area must be pretreated. First of all, its surface must be clean, and no dust, oil, water stains, or other dirt and loose oxides are

The oil and casing installation process mainly includes pre-installation preparation, drilling and trimming, pipe running operations, etc.(1) Inspection and preparation before drilling the oil casing and machine toolsNo. 1. Quality inspection of oil and casing strings:1) Check whether the on-site oi