Generally, the insulation steel pipe shall be coated with secondary inorganic zinc-rich primer (temperature resistance ≥400℃), and the pipe port shall be sealed with polyethylene film or three layers...
Process Flow of Sanitary Mirror Pipes Tube blank—check—peeling—check—heating—perforation—pickling—grinding—lubrication and air drying—welding head—cold...
1. Joint. Rigid joint, flexible joint, male thread joint, female thread joint, male and female thread joint, single-wire joint, double wire joint, screwed joint, flat face hammer...
Definition of pipe fittings: Pipe fittings are parts that connect pipes into pipelines. According to the connection method, it can be classified into socket pipe fittings, threaded pipe fittings,...
2. The standard specifications for the calculation method of pipe fittings 2.1 The calculation method of pipe fittings based on standards Domestic and foreign standards have provisions on...
Abstract: In terms of domestic high-pressure pipe fittings with large diameters used in valve boxes and stations of China's natural gas long-distance pipeline engineering, quality of pipe fittings with...