Zhejiang Dingxin Steel Tube Manufacturing Co., Ltd Is specialized in the supply of various Precision Seamless Steel Tube for Hard -drawn and all kinds of profiled bar, with 25 thousand tons output per year . We have allready passed the ISO9001-2000 quality system authentication. Our products specific diameter is from φ16mm to φ159mm, well thickness is from 1mm to 18mm, the product is widely not only used in auto liners、oil tank of jack、oil tank of lifting、 electrical Crust、liquid tank of compressor、tunnel and machinery project 、but also used for normal and low pressure boiler、heat exchanger and condenser etc. We are located in Zhejiang Haiyan Liuli Industry Zone, which is in between of Shanghai &Hangzhou. It is only 100 kilometers to Shanghai and no more than 80 kilometers to Hangzhou. Border upon Nanbei Lake Beauty Spot and Haining Tide, The transportation is extremely facilitates. Reliability &innovation is Dingxin’s sprits, along with the company policy as “quality first, credit first, service first”. Best product .management &service is what we are always seeking for.