Points for Attention in Welding Technology of Longitudinal Steel Pipes and Diameter Expansion TechnologyLongitudinally welded pipe diameter expansion is a pressure processing technology that uses hydraulic or mechanical means to apply force from the inner wall of the steel pipe to expand and expand

Thanks for South Africa's new customer order in the coated welded steel pipe. These are the carbon steel welded pipes that will be shipped with the standard export package. All of us know that South Africa is the second economy. Citizens have a higher standard of living. South Africa's energy and t

Selection of anticorrosive coatings for steel pipesThere are many types of anti-corrosion coatings, and their properties and uses are different. The correct selection is very important to the anti-corrosion effect and service life of the coating. When choosing:1. The nature of the surface material o

The high-frequency welding process of submerged arc steel pipe1. Control of the weld gap:After rolling by multiple rollers, the strip steel is sent to the welded pipe unit. The strip steel is gradually rolled up to form a round tube blank with a tooth gap. Adjust the pressing amount of the squeeze r