... Standard:DIN,JIS,ASTM,ASME,API Certification:ISO API schedule 40 carbon steel pipe Our company is one professional manufacturer ... foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat, exchanger, gas metallurgy, shipbuilding, construction, etc.Min Order Quantity10 tonsDelivery TimeAccording to ... are made under the ISO9001:2000 strictly. API schedule 40 carbon steel pipe