api e175 1 standard: API SPEC 5D 2 material:41 30X,E75,G105,S135 3 OD:60.3-168.3mm 4 WT:6.45-111.4mm api e175Place of origin: ChinaStandard: API SPEC 5DDiameter range:60.3-168.3mmWall thickness:6.45-111.4mmMaterial: 41 30X,E75,G105,S135 Tolerance: meet the standard or according to the international standardApplications range:petroleum,smelting, foodstuff,electric power,boiler heat,exchange,gas ...