Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering Hastelloy C22 Resistance Pitting, Crevice and Stress Corrosion Cracking Hex Head Bolt, Aorrosion Resistant Alloy 20 Nut for Hydrometallurgy and Sulfuric Acid Industry, Aorrosion Resistant Alloy 28 Nut for Chemical and Aetrochemical Processing Industries and so on.