... ",6.5" Material: carbon steel Certification : ISO9001-2008 Stainless steel heavy duty pipe clamp-(ISO9001-2008) Haiyan Hongtai Metal Products Co.,Ltd ... : Zinc , powder coat, hot-dip galvanized3) machining Process: Stamping , turning,tube bending, welding, milling, CNC lathe…4) usage of products: Furniture ...