At present, the stainless steel pipe production with perforation + cold rolling and cold drawing (including pickling and annealing) or perforated + hot rolled tube, cold rolling, cold drawing (including pickling and annealing), the process should be unique (including Taiwan province of China) in our country, and compared to the traditional extrusion + cold rolling, cold drawing process. Production cost is low, the wall thickness of high precision, but the middle process grinding amount is larger, this is due to the former procedure USES the punch, the expansion of tube billet surface defect quantity, after perforation caused by steel tube needs a large number of grinding, because of China's artificial cost is low, the processing method is more common in China.
If you would like to know more about carbon steel pipe,pls contact :hunan great steel pipe co.,ltd.
没有评论:
发表评论