Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering Aorrosion Resistant Alloy 28# Bolt for Chemical and Aetrochemical Processing Industries, Inconel 600 Bolt with Resistance to Stress Corrosion Cracking, Excellent Corrosion Resistance Incoloy 926 Bolt for Marine Industry and so on.