| Material | Standards & Grades |
| StainlessSteel nipple | ASTM A403 WP GR. 304, 304H, 309,310, 316, 316L, 317L, 321, 347, 904L |
| CarbonSteel nipple | ASTM A 234 WPB, WPBW, WPHY 42,WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70 |
| Low temperatureCarbon steel nipple | ASTM A420 WPL3 / A420WPL6 |
| Alloy steel nipple | ASTM / ASME A / SA 234 Gr. WP 1,WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Duplex steel nipple | ASTM A 815 UNS NO S 31803, S 32205 |
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