Imperial Size : 1/2" to 2"
Manufacturing Standard - ASTM
Dimensional Standard - ASME / ANSI B 16.9
| Type | Grade |
| Nickel Caps | 200 & 201 |
| Monel Caps | 400, R-405 & K-500 |
| Inconel Caps | 600, 601, 625 & 718 |
| Incoloy Caps | 800, 800H, 800HT, 825, 925 & DS |
| Hastelloy Caps | B-2, B-3, C-22, C-276 & X |
| Duplex Caps | 2205 / 31803 |
| Super Duplex Caps | SAF 2507, Zeron 100 & Ferralium 255 |
| Alloy 20 Caps | Alloy 20 / Carpenter 20 |
| 254 SMO Caps | 254 SMO |
| 904L Caps | 904L |
| Titanium Caps | Gr.2 & Gr.5 |
| Nitronic Caps | 30, 50, 60 |
| Stainless Steel Caps | 300 Series |