Buttweld Fittings
Elbows, tees, reducers, caps, stub ends, laterals and nipples from ½" to 30" in Sch. 5 to Sch. XXS, for welded piping systems.
Product Overview
Our buttweld fittings are made from ferrous and non-ferrous metals including carbon steel, alloy steel, low temperature carbon steel and stainless steel. Both seamless and ERW fittings are produced by hot or cold forming, and we can manufacture to your specification in terms of type, dimensions, material and quantity under third party inspection.
Fittings are perfectly round, rugged and leak proof, and meet the requirements of ASA, ASTM, BS, DIN and ISI codes. Hot dip galvanizing and sand blasting are offered as additional services.
- Size: ½" to 30"
- Schedule: Sch. 5 to Sch. XXS
- Standards: ASA / ASTM / BS / DIN / ISI
- Forming: Hot and cold forming, seamless & ERW
- Extra services: Hot dip galvanizing, sand blasting
Specifications
| Parameter | Details |
|---|---|
| Size | ½" to 30" |
| Schedule | Sch. 5 to Sch. XXS |
| Manufacturing | Hot / cold forming, seamless and ERW |
| Inspection | Third party inspection accepted |
| Codes | ASA / ASTM / BS / DIN / ISI |
| Other services | Hot dip galvanizing, sand blasting |
| Specialising in | Hi-nickel and stainless steel series |
Grades & Standards
Stainless Steel
ASTM A403 WP — 304 / 304H / 304L / 316 / 316H / 316Ti / 316L, 309, 310, 317L, 321, 347, 904L
Duplex & Super Duplex
ASTM A815 — UNS S31803, S32205 (2205), S32304 (2304 lean), S32750 (2507), S32760 (Zeron 100)
Alloy Steel
ASTM A234 WPB — WP5, WP9, WP11, WP12, WP91
Carbon Steel
ASTM A234 WPB, IS 1239 Part II
Low Temperature CS
ASTM A420 WPL6
Cupro Nickel
ASTM B171 — C70600 (90:10), C71500 (70:30)
Nickel & Monel
ASTM B366 — N02200, N02201, N04400, DIN N05500
Inconel
ASTM B366 — N06600, N06601, N06617, N07718, N06625
Incoloy
ASTM B366 — N08800, N08810, N08825, N08020
Hastelloy
ASTM B366 — N10276, N06022, N10665, N06455
Titanium
ASTM B363 — Gr. 1, 2, 3, 4, 7, 11 (CP); Gr. 5 (6Al-4V), Gr. 23 (6Al-4V-ELI), Gr. 12
Types Available
- Elbow 45°, 90°, 180°
- Equal tee
- Barred tee
- Reducing tee
- Concentric reducer
- Eccentric reducer
- End cap
- Stub end (long & short)
- U bend
- Laterals
- Nipple (swage & barrel)
Dimension Chart
| NPS | 90° LR elbow – centre to end (mm) | 45° elbow – centre to end (mm) | Equal tee – centre to end (mm) |
|---|---|---|---|
| ½" | 38 | 16 | 25 |
| ¾" | 38 | 16 | 29 |
| 1" | 38 | 22 | 38 |
| 1½" | 57 | 29 | 57 |
| 2" | 76 | 35 | 64 |
| 3" | 114 | 51 | 86 |
| 4" | 152 | 64 | 105 |
| 6" | 229 | 95 | 143 |
| 8" | 305 | 127 | 178 |
| 10" | 381 | 159 | 216 |
| 12" | 457 | 190 | 254 |
Dimensions are reference values from the governing standard. Please confirm the exact dimensions and tolerances against the current edition of the standard before ordering.
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| SS 304 | ≤ 0.08 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 18.0–20.0 | 8.0–10.5 | — | — |
| SS 316L | ≤ 0.035 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | — |
| Duplex 2205 (S31803 / S32205) | ≤ 0.030 | ≤ 2.00 | ≤ 1.00 | ≤ 0.030 | ≤ 0.020 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | N 0.08–0.20 |
| Super Duplex 2507 (S32750) | ≤ 0.030 | ≤ 1.20 | ≤ 0.80 | ≤ 0.035 | ≤ 0.020 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | N 0.24–0.32 |
| Inconel 625 (N06625) | ≤ 0.10 | ≤ 0.50 | ≤ 0.50 | ≤ 0.015 | ≤ 0.015 | 20.0–23.0 | ≥ 58.0 | 8.0–10.0 | Nb+Ta 3.15–4.15 |
| Hastelloy C276 (N10276) | ≤ 0.010 | ≤ 1.00 | ≤ 0.08 | ≤ 0.040 | ≤ 0.030 | 14.5–16.5 | Balance | 15.0–17.0 | W 3.0–4.5, Fe 4.0–7.0 |
Values are the usual requirements of the governing ASTM/ASME specification and are given for reference. The mill test certificate supplied with your consignment is the governing document.
Mechanical Properties
| Grade | Tensile strength (MPa, min) | Yield strength (MPa, min) | Elongation (%, min) | Hardness |
|---|---|---|---|---|
| SS 304 | 515 | 205 | 35 | 201 HB max |
| SS 316L | 485 | 170 | 40 | 217 HB max |
| Duplex 2205 | 620 | 450 | 25 | 293 HB max |
| Super Duplex 2507 | 795 | 550 | 15 | 310 HB max |
| Inconel 625 | 827 | 414 | 30 | — |
| Hastelloy C276 | 690 | 283 | 40 | — |
Applications
Need Buttweld Fittings for your project?
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