Rotational steel composite pipe and fittings are steel body and plastic (PO \ PE) as the main base, making integration through the scientific method, so that it not only has the mechanical properties of steel, but also has a special plastic corrosion resistance Grinding and easy scaling and other characteristics, is ideal for current delivery of corrosive media. Rotational steel pipe products whose production process the main process is as follows: (1) the case of semi-finished manufactured in accordance with the company's production planning and procurement plans to meet the requirements of various raw materials purchased after the manager was detected, according to the required size of a metal pipe cutting machine dedicated reclaimer, the beginning of the reclaimer with CNC lathes trim, passed the test size, the use of precision control detector flange respectively on straight pipes and fittings flange straightening eye spot welding machine, then press with automatic size specifications were buried arc welding and gas shielded welding into semi-finished shell. (2) grinding rust treatment after inspection of semi-finished case with straight-pressure open-blasting machine for internal and external surface rust treatment, rust rating to Sa3 level, then semi-finished inner wall of the housing after moderate rust polished, so that was a ground glass pipe wall, in order to increase when the roll of plastic and steel lining adhesion and density, while further removing welding slag and iron, rust, ensure product quality rotomolding process under way. (3) heating Rotational shell semi-finished products will be pretreated by different specifications were sent to automate the heating furnace, the use of intelligent electronic temperature controller heating up process, in order to fully heated casing, thermal control instrument display case has been After reaching the set thermal state, the use of intelligent controllers and automated quantitative conveying the setting powder feeder into the pipe wall, and complete the process of automatic rotolining rotating device. (4) leveling after finishing the first step to be transferred to another rotational manufactures a relatively low temperature setting automated furnace, using a rotating device rotates slowly in the furnace, so that did not adhere to the surface of the pipe wall Further thermoplastic powder melts completely melted, cooled baked after gradually cooling, and external surface appearance trim. (5) Rotational good paint package already finished making the required tests of various types, the inspection of products using primer, paint, paint three paint handling, according to the standard labeling and packaging (paint, logos and packaging according to customer requirements). Company: Luoyang State-run Pipe Co., Ltd. Contact: Xing Yaxian Tel: 0379-65260957 Mobile: 15225512219 E-mail: 312838643@qq.com Fax: 0379-65260950 Website: www.jhffg.com www.jhnmg.com www.jhcsgd.com