Screws, Bolts, Nuts manufacturer / supplier in China, offering Heavy-Duty Carbon Steel U Bolts M10-M24 8.8 Grade for Machinery & Construction - ISO Certified Factory Direct, Galvanized Carbon Steel U Bolts M12-M20 for Industrial Pipe Clamping & Equipment Mounting - Bulk Pricing, 304 Stainless Steel/HDG U Bolts M6-M48 for Solar Mounting, Pipe Clamping - ISO Certified Factory Direct and so on.