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Zhejiang Dada Stainless Steel Co., Ltd(DDSS)is a Sino-Hongkong joint venture company, located in Deqing of Huzhou City Zhejiang province, which is the center of the most developed industrial area of China. Onehour distance from Shanghai and half hour to Hangzhou city, DDSS has the excellent geographic locationand convenient transportation.

As a brother of Hangzhou Hengda Stainless Steel Co.,Ltd and Zhejiang Guangda Stainless Steel Co.,Ltd, DDSSfounded in December 2004, the company covers an area of more than 60000 square meters, and we invested over 15million US dollars to built as a leading stainless steel pipes manufacturers in China. The company ownedmore than ten cold-drawing and cold-rolling production lines for stainless steel seamless pipes, and more than ten welding production lines from abroad for stainless steel welded pipes.Our products range include: Stainless Steel Seamless Pipes & Tubes: Outer diameter (6~530mm) x Wall thickness (1~45mm) x Length (1000~15000mm), Stainless Steel Welded Pipes & Tubes: Outer diameter (8~2540mm) x Wall thickness (0.5~25mm), Sanitary Mirror Surface Tubes: Outer diameter (10~159mm) x Wall thickness (0.8~6mm) x Length (4000~6000mm), and Thin-wall Stainless Steel Press-fit Water Tubes: DN (DN15~300) x Wall thickness (0.8~4mm) x Length (4000~6000mm). The main material grade consist of  304/L, 321/H, 316/L, 317L, 310S, 347/H, 904L, and duplex materials consist of S31803, S32205, S32507 and etc.

The production standard is in compliance with GB, HG, SH, ASME/ASTM, JIS, DIN. The raw materials are from quality guaranteed companies, such as Baosteel, Yusco, Tisco, Posco, Walsin, Yongxing and etc. The Company is equipped with advanced testing equipments, such as PMI (imported from Germany), Eddy Current Testing Line, Ultrasonic Testing Line, Hydro-static Testing lines, X-Ray Testing Line, Endoscope, Hydraulic universal testing machine, Hardness Testing, Impact Testing, Metalloscope and so on. Based on ISO 9001 and the strict measures system in controlling of raw materials, production technology and inspection, DDSS keeps supplying high quality productions to the clients.

The products are widely used in such fields as chemical, oil and gas, chemical fiber, pulp and paper, LNG, petrochemical, nuclear power, electric generation (thermal/hydro), shipbuilding, boilers and heat ex-changers, food machinery, water supply, water-treatment, architecture and aviation, etc.

DDSS is certified by Lloyd’s according to ISO9001, PED/97/23/EC, and authorized license by National Special Pressure Equipment. As Health, Safety and Environment (HSE) is our top priority, the company has also been qualified according to ISO14001 and OHSAS18001.

With the “Quality-first and Credit-based” corporate philosophy, DDSS is establishing its worldwide market steadily and strongly, such as Europe Countries, America, Japan, Korea, Singapore, Thailand, The Middle East and etc. And we’ll continuously seek for supplying better quality products and better service to customers of the world.