Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering Aorrosion Resistant Alloy 28 Nut for Chemical and Aetrochemical Processing Industries, Alloy 31 Stud Bolt for Chemistry and Petrochemicals, Excellent Corrosion Resistance Incoloy 926 Bolt for Marine Industry and so on.