Buttweld pipe fittings comprises of long radius elbow, concentric reducer, eccentric reducers and Tees etc. Butt weld stainless steel and carbon steel fittings are an important part of industrial piping system to change direction, branch off or to mechanically join equipment to the system. Buttweld fittings are sold in nominal pipe sizes with specified pipe schedule. BW fitting’s dimensions and tolerances are defined as per ASME standard B16.9.
Butt welded Pipe fittings such as carbon steel and stainless steel offer many advantages compared to threaded and socketweld fittings. The later are only available up to 4-inch nominal size whereas butt weld fittings are available in sizes from ½” to 72”. Some of the benefits of weld fittings are;
• Welded connection offers more robust connection
• Continuous metal structure adds to the strength of the piping system
• Butt-weld fittings with matching pipe schedules, offers seamless flow inside the pipe. A full penetration weld and properly fitted LR 90 Elbow, Reducer, Concentric reducer etc. offers gradual transition via welded pipe fitting.
All buttweld pipe fittings have beveled ends as per ASME B16.25 standard. This helps create full penetration weld without any extra preparation needed for the butt weld fitting.
Butt weld pipe fittings are most commonly available in carbon steel, stainless steel, nickel alloy, aluminum and high yield material. High yield butt weld carbon steel pipe fittings are available in A234-WPB, A234-WPC, A420-WPL6, Y-52, Y-60, Y-65, Y-70. All WPL6 pipe fittings are annealed and are NACE MR0157 and NACE MR0103 compatible.
API , ASTM , DIN , EN , DIN
1/8” NB TO 48” NB
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Sch 5 TO Sch XXS.
Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Seamless / Welded / Fabricated
| Stainless Steel: |
Standard : ASTM A403 / ASME SA403 Grades : 304, 304L, 304H, 308, 309, 309S, 310S, 310H, 312, 314, 316, 316L 316H, 316Ti, 317L, 321, 347, 347H,904L |
| Carbon Steel |
Standard : ASTM A234 / ASME SA234, ASTM A860 / ASME SA860 Grades : WPB, WPL6, WPHY6, WPHY60, WPHY42, WPHY46, WPHY60, WPHY65 |
| Alloy Steel |
Standard : ASTM A234 / ASME SA234 Grades : WP5, WP9, WP11, WP22, WP91 |
| Duplex and Super Duplex Steel |
Standard : ASTM A815 / ASME SA815 Grades : S31803 / S32205 (2205) / S32750 (2507)/ S32760 |
| High Nickel Alloys |
Standard : ASTM B366 / ASME SB366 Grades : Nickel Alloy 200, 201 / Monel 400, K500 / Inconel 600, 601, 625, 718 / Incoloy 800/800H/800HT, 825, 925 / Hastelloy C22, C-2000 C276, B2, B3 |
| SMO 254 |
Standard : ASTM A403 / ASME SA403 Grades : SMO 254 | UNS S31254 |
| Alloy 20 |
Standard : ASTM A366 / ASME SA366 Grades : Alloy 20 UNS N08024 |
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