CZSD Seamless Steel Tube Co., Ltd is a joint venture company and as a specialized manufacturer of high-end seamless tubes made of carbon steel, alloy steel,Heat-resistant Alloy & stainless steel.
As one of the most advanced and best manufacturers of (rifled) seamless alloy steel tubes and seamless stainless steel tubes for high-pressure boilers, petroleum cracking & fertilizer equipment, and automotive industries in China, CZSD continues to carry out technological innovation and introduce the most advanced international Production and testing equipment.
As of the end of 2009, the company has introduced various production equipment and inspection device including 30 hot piercing unit, automatically continuous heat-treating furnace of bright annealing, LG325 cold-rolling unit, straightening machines, and NDT system, etc.
CZSD keep technical innovation and always pay much attention to R & D on new products. In the past two years, It has successfully developed the following new products: seamless tube of high alloy steels of T91, T92, cold-drawn multi-lead rifled seamless tube of carbon steel & alloy steel for high-pressure boilers (Type A, Type B, and Optimized type), Seamless steel tube (25mm * 2.5mm) with ultra length of 25.5 meters …
CZSD follows the international advanced management system. The company has obtained international certification like ISO9001, API 5L & 5CT, ISO14001, OHSAS 18001, etc. Besides, product standard specifications like ASTM, EN, BS, DIN, GB, JIS, API are studied by STK and the requirements of these standard specifications are strictly executed during our daily production.
CZSD has become the prefered supplier of boiler tubes (carbon steel, alloy steel, stainless steel, and ribbed tubing,) for HARBIN BOILER COMPANY LIMITED, DONGFANG BOILER GROUP, SHANGHAI BOILER Co., LTD and one of the appointed suppliers for small & medium size seamless tubes (carbon steel, alloy steel, and stainless steel) for Sinopec, CNPC, CNOOC and we have got positive assessment from these reputative purchasers and players in power generation industries.