1.din2448 seamless steel tube 2.material:Astm a 53/106/ API 5LA/B ... ,shipbuilding,smelting, aviation, power, foodstuff, papermaking, chemical, medical equipment, boiler heat, exchanger, gas metallurgy, etc.Min Order Quantity1 tonsDelivery Time25 ... and high-temperature resistant with black painting3. All the production process are made under the ISO9001:2000 strictly.Kewords:seamless pipe,carbon steel ...