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Seamless pipe is a long steel strip with a hollow cross-section and no seams around it. There are more than 5,100 production plants under more than 1,850 companies in more than 110 countries producing seamless pipes in the world, of which more than 260 plants under more than 170 companies in 44 countries produce oil pipes.
The strip is cut into narrow strips of steel, which are then moulded into tubes. A special welder then welds the seam together. External weld is polished. The inner burr of the general welded pipe is not played. Internal burrs are only used for precision welded pipes. Main products: seamless square pipe, large diameter square pipe, galvanized square pipe, welded pipe, seamless steel pipe, boiler pipe,
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