Range : 15 NB upto 100 NB 3000 LBS & 6000 (Sockolet / Thredolet / Nippolet / Elbolet / Insert Weldolet / Branzolet & Coupolet), 6 NB upto 600 NB (Weldolet / Sweepolet) SCH 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS. Steel Tubes (India) Pvt. Ltd. Stainless Steel ASTM / ASME SA 182 F 304, 304L, 304H, 309H, 310H, 316, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347 H Duplex Steel ASTM / ASME SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61.