1、Hydraulic Cold-drawn Category The cold-drawn steel pipe technology is widely used in the manufacture of single hydraulic cylinder barrels and engineering machinery cylinders, and the cold-drawn machine is the main processing equipment for cold-drawn steel pipes.Our company has a 300-ton hydraulic cold-drawing machine, with a maximum cold-drawing length of up to 13.5m, maximum cold-drawing outer diameter of up to 325mm, and wall thickness of up to 36mm. The ellipticity of the inner hole of the steel pipe can be controlled at 5-10 si after cold drawing. The finish is at 0.8-1.6um.
2、Scraping And Rolling Machine Scraping and rolling is the finishing process of boring and tumbling, completed at one time after cold drawing. Compared with the traditional honing process, the efficiency of scraping and rolling is increased up to 80 times, and the surface finish of the bore is higher (up to 0.2um). The cylinder is more wear-resistant due to the increase in surface hardness and residual stress.The scraping and rolling machine we introduced is U.S.-made equipment, with its head locked to better ensure the straightness of the bore (controlled within 0.2mm/m), and the finish is controlled at 0.08-0.2um.Presently, we can process steel pipes with lengths up to 3m and calibers between 80-200mm.
3、Polishing Machine Polishing the outer surface of the steel pipe is our unique process.To satisfy the stringent requirements of the external surface of some clients, we polish the external surface to ensure that there is no pockmark on the external surface of each steel pipe, so that the pipe appearance is smooth and durable from an aesthetic point of view, which is more conducive to the painting of the external surface.
Contacts：Mr.Sun Cell phone：+86-13328191155
Address： Panjia Industrial Park, Xueyan Town, Wujin District, Changzhou City, Jiangsu Province