Defects on the seamless steel pipe internal and external surface have a great influence on the performance of high-pressure boiler tubes using. As a leading seamless steel pipe manufacturer, Prime Steel Pipe will adopt some measures to control quality in the production process of seamless steel pipe.
1, Add hot ingot, billet surface and perforation of the capillary inner and outer surfaces are determined by the shortage tube outer diameter surface, remove oxide skin, eliminating the resulting scarring and other defects.
2, Use high-quality work, excellent mold and process for lubrication to prevent sticking during rolling of steel, defects, excessive wear and other phenomena, to eliminate the resulting straight, scratching, rolling off, cracks and other defects.
3, Use protective gas heat pipe. No shielding gas should be heat-treated steel shot blasting, sanding, etc. Overall, the surface of iron oxide to eliminate defects and improve surface quality and ease of surface inspection.
