... quality stainless steel tube manufacturer in China, our tubes according to ASTM/ASME A213 are widely used in heat exchanger,pressure vessels, our ... and QINSHAN Nuclear Power Company Ltd etc.We could supply: Seamless Pipes & Tubes: 6-630mm outside diameter by 1-40mm wall ... ,GOST-9941,GOST-9940 DIN17456,DIN17458 JIS G3459,G3463, A213 tube for boiler