সীমাহীন ইস্পাত টিউব

GOST 9941 Seamless Cold and Warm-deformed Tubes Made From Corrosion-resistant Steel Tube material with steel grades: 08H17T, 08H13, 12H13, 15H25T, 04H180N10, 08H20N14S2, 10H17N13M2T, 08H18N12B, 10H23N18,08H18N10T,08H18N12T,08H17N15M3T12H18N10T,12H18N9,17H18N9,08H22N6T,12H17,06HN28MDT Delivery condition:The tubes are delivered in heat treated conditionTubes are cut square and deburred. Testing:TensileFlatteningExpansionIntercrystalline corrosion testThe tubes shall be