The right material.
The right product form.
Specify fittings and forged flanges against their respective material standards.
Fitting and forged-flange specifications are listed separately below. These references help define an enquiry; qualified grade, size, wall thickness and class combinations are confirmed before an order is accepted.
Wrought butt-weld fittings
| Material family | Specification | Grades / request details |
|---|---|---|
| Carbon steel | ASTM A234 | WPB |
| Alloy steel | ASTM A234 | WP11 · WP22 · WP91 |
| Stainless steel | ASTM A403 | WP304 / WP304L · WP316 / WP316L |
| Duplex / super duplex | ASTM A815 | Specify the exact grade and required class |
| Nickel alloys | ASTM B366 | Specify the exact nickel-alloy grade |
Forged flanges
| Material family | Specification | Grades / request details |
|---|---|---|
| Carbon / low-temperature carbon steel | ASTM A105 / ASTM A350 | A105 / specified A350 grade |
| Alloy steel | ASTM A182 | F11 · F22 · F91 |
| Stainless steel | ASTM A182 | F304 / F304L · F316 / F316L |
| Duplex / super duplex | ASTM A182 | F51 · F53 · F55 |
| Nickel alloys | ASTM B564 | Specify the alloy / UNS designation, e.g. Alloy 625 |
“L” denotes a separately specified low-carbon grade; the slash notation above does not claim dual certification. State the exact grade and required specification edition in your enquiry.
Download material reference list (CSV) ↓Specify the complete requirement.
Product → Type → Material specification → Grade → Size → Schedule / wall or flange class → Facing / bore → Standard → Inspection → Delivery.
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