Resistance welding, as the name implies, is a method in which pressure is applied through electrodes after the weldment is assembled, and the resistance heat generated by the current passing through the contact surface of the joint and the adjacent area is used for welding. High-frequency welding: W

IPN8710 non-toxic drinking water anti-corrosion steel pipe should be coated with topcoat within 16 hours after anti-rust treatment, and topcoat within 8 hours in humid and cold areas and coastal cities, otherwise it will cause secondary corrosion and must be cleaned with a wire brush.IPN8710 anti-co

In the oil drilling and production operation, the slotted casing is an important piece of equipment, and it is often used for early completion or oil production and sand control. At present, the most commonly used slotted casing is the wire-wound screen. The manufacturing method of this slotted casi

Fake and inferior steel pipes are prone to folding. Folds are various fold lines formed on the surface of the steel pipe, and this defect often runs through the longitudinal direction of the entire product. The reason for the folding is that the counterfeit and inferior manufacturers pursue high eff