Standard Pipe Clamps 1.universal pipe clamps,vertical pipe clamp 2.Strict quality control 3. ISO9001- ... 2000 Standard Pipe Clamps,universal pipe clamps,vertical pipe clamp Certification: ISO9001-2000 1. Material: iron, ... per drawings requirement4. Precision machining: stamping, punching, bending ,CNC lathes, milling drilling,grinding etc5. Surface treatment: Zinc plated,power coated ...