... ,STS49Applicationpetroleum, construction ,shipbuilding,smelting, aviation, power, foodstuff, chemical, medical equipment, boiler heat, exchanger, gas metallurgy, Surface Black painting, ... ISO9001,SGS,BV, etcCapacity80000tons/yearAdvantages1.Reasonable price for good quality 2.Abundant stock and prompt delivery 3.Rich supply ... -13212225666 API 5L/5CT A106B seamless steel pipe HIGH QUALITY STOCK HOT