Product Catalogue
Butt-Weld Fittings & Flanges to ASME B16.9, B16.28, B16.5 & B16.47
Carbon Steel, Alloy Steel and Stainless Steel fittings — seamless to 24" NB and welded (WX) from 48" NB and above, Schedules 20 through XXS, all IBR Approved and EN 10204 3.1 / 3.2 traceable.
Material Grade Matrix
Every fitting and flange is manufactured to the chemical composition, mechanical property and heat-treatment requirements of the governing ASTM / ASME specification. Material grade availability below applies across Elbows, Tees, Reducers, Caps, Stub Ends, Laterals, Crosses and Flanges.
| Material Family | Grade / Designation | Governing Specification | Typical Service | Service Temp. Range |
|---|---|---|---|---|
| Carbon Steel | WPB / WPB-W | ASTM / ASME A234 | General process & utility piping, refinery units | -29°C to 425°C |
| Carbon Steel (Low Temp.) | WPL6 | ASTM / ASME A420 | Cryogenic & sub-zero pipelines, LPG / LNG systems | -46°C to 345°C |
| Alloy Steel | WP11 (1.25Cr-0.5Mo) | ASTM / ASME A234 | Boiler headers, superheater & reheater piping | Up to 580°C |
| Alloy Steel | WP22 (2.25Cr-1Mo) | ASTM / ASME A234 | High-temperature steam & hydroprocessing piping | Up to 580°C |
| Alloy Steel | WP91 (9Cr-1Mo-V) | ASTM / ASME A234 | Ultra-supercritical power plant main steam lines | Up to 600°C |
| Alloy Steel | WP92 | ASTM / ASME A234 | Next-generation USC boiler & turbine piping | Up to 650°C |
| Alloy Steel | WP5 (5Cr-0.5Mo) | ASTM / ASME A234 | Fired heater & hydroprocessing piping | Up to 600°C |
| Alloy Steel | WP9 (9Cr-1Mo) | ASTM / ASME A234 | Hydrogen reformer & high-temperature process lines | Up to 600°C |
| Stainless Steel | WP304 / 304L / 304H | ASTM / ASME A403 | General corrosion service, food & pharma piping | Cryogenic to 427°C |
| Stainless Steel | WP316 / 316L / 316H | ASTM / ASME A403 | Chloride-rich & marine environments, chemical processing | Cryogenic to 427°C |
| Stainless Steel | WP321 | ASTM / ASME A403 | High-temperature exhaust & ducting systems | Up to 900°C (intermittent) |
All grades available with full chemical composition and mechanical property reports per EN 10204 3.1 / 3.2. PMI (Positive Material Identification) testing available on every consignment.
Buttweld Elbows
Manufactured to ASME B16.9 (Long Radius) and ASME B16.28 (Short Radius), our elbows are available in 45°, 90° and 180° configurations across Long Radius (LR, centre-to-end = 1.5 × NPS) and Short Radius (SR, centre-to-end = 1.0 × NPS) types. Manufactured by hot induction bending and forming from seamless and welded pipe, with full wall-thickness verification.
- Configurations: 45°, 90°, 180° (return bends)
- Types: Long Radius (LR) & Short Radius (SR)
- Size Range: 1/2" to 48" NB and above
- Schedules: SCH 20 to SCH 160 / XXS
- Construction: Seamless (≤24") / Welded WX (≥48")
- Standard: ASME B16.9 / ASME B16.28
| NPS (in) | Outside Diameter (mm) | 90° LR “A” (1.5×NPS) mm | 90° SR “A” (1.0×NPS) mm | 45° LR “A” (0.625×NPS) mm |
|---|---|---|---|---|
| 2 | 60.3 | 76 | 51 | 32 |
| 4 | 114.3 | 152 | 102 | 64 |
| 6 | 168.3 | 229 | 152 | 95 |
| 8 | 219.1 | 305 | 203 | 127 |
| 12 | 323.9 | 457 | 305 | 191 |
| 16 | 406.4 | 610 | 406 | 254 |
| 20 | 508.0 | 762 | 508 | 318 |
| 24 | 610.0 | 914 | 610 | 381 |
Equal & Reducing Tees
Our buttweld tees provide branch connections for process, utility and boiler-grade piping systems, manufactured to ASME B16.9 with run and branch dimensions matched to header and branch pipe schedules. Available as Equal Tees (branch NB = run NB) and Reducing Tees (branch NB < run NB).
- ✓ Size range: 1/2" to 48" NB and above (run); reducing outlets to 1/4"
- ✓ Schedules: SCH 20 to SCH 160 / XXS, matched run & branch
- ✓ Construction: Forged/seamless (≤24"), fabricated welded (≥48")
- ✓ Standard: ASME B16.9, run-to-branch centreline per "C" and "M" dimensions
- ✓ Materials: Carbon, Alloy & Stainless Steel per material grade matrix
Typical Applications
- Branch take-offs on boiler feedwater & steam headers
- Instrumentation & drain connections on process piping
- Header distribution in utility & cooling water systems
- Tie-ins for tank farm and pipeline manifold systems
Concentric vs. Eccentric
Concentric Reducers maintain a common centreline between the larger and smaller ends — ideal for vertical lines and general diameter transitions.
Eccentric Reducers offset the centreline, creating a flat top or bottom profile — used in horizontal lines to maintain a level pipe crown (top-flat) for gas/vapour service or level invert (bottom-flat) for gravity drainage and to prevent liquid pocketing.
Concentric & Eccentric Reducers
Manufactured to ASME B16.9 dimensional standards, our reducers provide smooth, low-turbulence transitions between two different pipe sizes, minimising pressure drop and erosion at the transition zone.
- ✓ Size range: 1/2" to 48" NB and above
- ✓ Schedules: SCH 20 to SCH 160 / XXS, large & small end independently specified
- ✓ Standard: ASME B16.9, taper length "H" per nominal size combination
- ✓ Materials: Carbon, Alloy & Stainless Steel per material grade matrix
Pipe Caps
Buttweld end caps manufactured to ASME B16.9, used to close the end of a pipe run, fitting or header. Hemispherical/ellipsoidal forming with controlled wall thinning to meet minimum thickness requirements at the crown.
- ✓ Size range: 1/2" to 48" NB and above
- ✓ Schedules: SCH 20 to SCH 160 / XXS
- ✓ Standard: ASME B16.9
Lap Joint Stub Ends
Stub ends are used in conjunction with a Lap Joint Flange to create a rotatable flange connection, simplifying bolt-hole alignment and enabling the use of stainless/alloy stub ends with carbon steel backing flanges to reduce material costs.
- ✓ Types: Type A (machined) and Type B (as manufactured)
- ✓ Dimensions matched to ASME B16.5 lap joint flange seating
- ✓ Materials: Carbon, Alloy & Stainless Steel per material grade matrix
Laterals
Laterals provide an angled branch connection (typically 45°) for piping systems where flow direction or gravity drainage requirements make a standard tee impractical — common in pipeline manifolds and tank farm systems.
- ✓ Equal & reducing configurations available
- ✓ Custom fabricated to project-specific layouts on request
Crosses
Four-way fittings providing two opposing branch connections from a single run, used in symmetric distribution headers and fire protection ring mains where multiple take-offs are required from a single point.
- ✓ Equal & reducing configurations available
- ✓ Manufactured to ASME B16.9 run/branch dimensions
IBR Approved Flanges
Manufactured to ASME B16.5 (NPS ½" to 24") and ASME B16.47 Series A & B (NPS 26" to 60"), our flanges are available across all standard pressure classes and facing types, IBR approved for boiler-grade piping connections.
Weld Neck (WN)
Tapered hub design for high-pressure, cyclic and high-temperature service with smooth stress transition to the pipe.
Slip-On (SO)
Economical fit-up flange, fillet welded inside and outside, suited to lower-pressure piping systems.
Blind (BL)
Used to seal the end of a piping system, valve or pressure vessel opening; available in all standard classes.
Socket Weld (SW)
For small-bore high-pressure piping, providing a smooth bore with the pipe inserted into a recessed socket.
Ring Type Joint (RTJ)
Metal-to-metal ring gasket seating for high-pressure / high-temperature critical service per ASME B16.5 Class 600 and above.
Lap Joint (LJ)
Used with stub ends for rotatable bolt-hole alignment and cost-effective alloy/CS combinations.
| Pressure Class | Standard Facing | Size Range | Typical Application |
|---|---|---|---|
| Class 150 | Raised Face (RF) | 1/2" - 24" (ASME B16.5); 26" - 60" (ASME B16.47) | Low-pressure utility & water systems |
| Class 300 | Raised Face (RF) | 1/2" - 24" (ASME B16.5); 26" - 60" (ASME B16.47) | General process piping |
| Class 600 | RF / RTJ | 1/2" - 24" (ASME B16.5); 26" - 60" (ASME B16.47) | High-pressure steam & boiler piping |
| Class 900 | RF / RTJ | 1/2" - 24" (ASME B16.5) | High-pressure hydrocarbon & power piping |
| Class 1500 | RTJ | 1/2" - 24" (ASME B16.5) | High-pressure wellhead & severe service |
| Class 2500 | RTJ | 1/2" - 12" (ASME B16.5) | Extreme-pressure critical service |