Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering NF Nimo28 Hastelloy B-2 Nut for Various Acidic Environments, NF Nc15tnba Thread Rod with Good Corrosion Resistance for Various Corrosive Environments, DIN W. Nr. 2.4669 Nicr15fe7tial Customized Bolt and Nut with Oxidation Resistance and so on.