| Sr. No. | Material | Size | Class | Specification | Item |
| 1 | Cupro Nickel Hastelloy Nickel Monel Inconel Alloy 20 Duplex | 15 NB to 200 NB | 150# 300# | ASTM BS DIN | Flanges, SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing |
| ASA 150,300 Table D, E, F, H, DIN, ND-6, 10, 16, 25, 40 | SORF, BLRF, LAP Joint & Spectacle |
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