1.High quality control ISO/DIN/GB 2.OEM Small order ... 5~250 tons punching machines, welding machine, polish machines...Processed materialstainless steel, copper, carbon steel (according to customer's requirement)Surface ... , punching, laster cutting,threading, welding, tapping, riveting, grindingSizeAccording to customer's desingThickiness0.5mm ~12mm, or other special availableStandardANSI. API ...