Steel pipes are divided into two categories: seamless steel pipes and welded steel pipes (seamed pipes). According to the cross-sectional shape, it can be divided into round tubes and special-shaped tubes. Round steel tubes are widely used, but there are also some square, rectangular, semicircular,

There are many uses for modern seamless steel pipe production. Seamless steel pipe (Seamless Steel Tube) is a long strip of steel with a hollow section and no seams around it. The steel pipe has a hollow section and is widely used as a pipeline for transporting fluids, such as pipelines for transpor

With the development of the petroleum industry, pipeline transportation of oil and gas has developed rapidly due to its safety, economy, professionalism, and high efficiency. Long-distance, large-diameter, and high-pressure pipelines are becoming the development direction of onshore oil and gas tran

1. The power supply with vertical external characteristics is adopted, and the positive polarity is used for DC (the welding wire is connected to the negative pole).2. It is generally suitable for welding thin plates below 6mm. It has the characteristics of a beautiful weld shape and small welding d