... Steel Casing OD: 114.3mm-197.93mm WT: 6-11mm Standard:API 5L, API 5CT Special pipe: API Pipe Black steell casingSeamless Steel ... 139.7-273.1mm (5-10 inch) Steel Pipe Thickness: SCH 20 to SCH 140 Standard ... : API 5L: API 5CT, ASTM A106, Steel Grade: A, B, X42, X46, X52, X56, ... ST37, ST52 Packing: Labeled and bundled together with steel strip Application: Low, medium and high pressure boiler, ...