... ",2",3",4",5",6.5" Material: carbon steel Certification : ISO9001-2008 Stainless steel heavy duty pipe clamp-(ISO9001-2008) Haiyan Hongtai Metal Products ... by your drawing, samples or description. 1) material: Carbon steel , galvanized sheet, stainless steel 304 ,brass2) surface treatment: Zinc , powder coat, hot-dip ...