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ASME B16.9 ASTM A234 WP22 CL1 / CL3 180 degree Elbow Alloy Steel Pipe Fittings
WP22 is the designation used to describe the grade of fittings, it corresponds to the material grade and is part of the ASTM A234 specification for alloy steel fittings. These fittings are available in a range of sizes, and their specifications will generally reference standard dimensions like ANSI/ASME B16.9 for butt-weld fittings. They are classified into different classes based on their minimum yield strength and design applications. The classifications typically refer to the manufacturing process or the intended service conditions of the fittings. Usually, fittings belonging to class 1 and 3 are first liquid quenching followed by the performance of a tempering process.
A234 WP22 Alloy Steel Pipe Fittings Chemical Requirements
| Grade | C | Mn | Si | S | P | Cr | Mo |
| ASTM A234 WP22 Fittings | 0.05-0.15 | 0.3-0.6 | 0.5 | ≤0.04 | ≤0.04 | 1.9-2.6 | 0.87-1.13 |
Standard Specification For Alloy Steel ASTM A234 WP22 Pipe Fittings
| Specifications | ASTM A234 / ASME SA234 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
Other Materials
| Nickel Alloy | ASTM / ASME SB 336 UNS 2200 (NICKEL 200), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400), UNS 8020 (ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C276) |
| Stainless Steel | ASTM / ASME SA 403 GR WP "S" / "W" / " WX" 304 , 304L, 304H, 304N, 304LN, 309, 310H, 316, 316H, 317, 317L, 321, 321H, 347, 347 H |
| Duplex Steel | ASTM / ASME SA 815 UNS NO.S 31803, S 32205, S 32550, S 32750, S 32760 |
| Carbon Steel | ASTM / ASME A 234 WPB, WPC ASTM / ASME A 860 WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70 |
| Alloy Steel | ASTM / ASME A 234 WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 23, WP 91 |
Note: Fittings of Grades WP1, WP11 Class 1, WP11 Class 2, WP11 Class 3, WP12 Class 1, WP12 Class 2, WP22 Class 1, WP22 Class 3, WP5, and WP9 shall be furnished in the annealed, isothermal-annealed, or normalized and tempered
ASTM A234 WP22 Alloy Pipe Fittings Applications
