Qinhuangdao Dongyan Energy_Saving Co., Ltd is located in the beautiful seaside city of Qinhuangdao, its main products are Single/Dual ply stainless steel corrugate heat exchange pipe, inver-wave corrugate heat exchange pipe and welding stainless steel pipe. Among these dual ply stainless steel corrugate heat exchange pipe and stainless steel ribbon welding corrugate pipe award national patent, patent number: ZL 00 2 01358.4; ZL 2004 2 0000133.0.
The company has 115 employees, of whom 33 were professional and technical personnel.

Production specification

A): Welding stainless steel pipe Diameter16, diameter18, diameter19, diameter20, diameter22, diameter25, diameter32, wall thickness from: 0.6 mm to 2.5mm; Steel material 304, 321, and 316L;

B): Outside wave corrugate pipe: Diameter 16, diameter 19, diameter 20, diameter 22, diameter 25, diameter 32, diameter 38; Wall thickness 0.6mm to 1.2mm, steel material 304, 321, 316L;

C)Insude wave corrugate pipe diameter 19, diameter 25, diameter 32, wall thickness 1.0mm to 2.5mm, steel material 304, 321 and 316L.