Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
Incoloy 800H Fittings
TorqBolt-manufactured Incoloy 800H pipe fittings (UNS N08810, Werkstoff 1.4876) cover the full ASME B16.9 buttweld family (elbows, tees, reducers, caps, stub-ends, lap-joints) and the ASME B16.11 socketweld and threaded family (elbows, tees, couplings, half-couplings, plugs, bushings, union halves) in NPS 1/2 inch through 24 inch. Buttweld fittings are forged from ASTM B564 stock or hot-formed from B407 seamless pipe and solution-annealed at 2050 deg F (1121 deg C) to lock in ASTM grain size 5 or coarser for sustained service to 815 deg C (1500 deg F). Socketweld and threaded fittings are forged from B564 stock with class 3000, 6000 or 9000 ratings per ASME B16.11. Each fitting is supplied with an EN 10204 type 3.1 certificate as default; type 3.2 with Lloyds Register, DNV, BV, SGS or TUV third-party witness is supplied on call-out for refinery, LNG and ASME Section VIII pressure-vessel piping.
Request a Quote on Incoloy 800H Buttweld + Socketweld + Threaded Fittings
Fitting Dimensions per ASME B16.9 + ASME B16.11
Buttweld fitting wall thickness matches the parent pipe schedule across the size range. Socketweld and threaded fitting wall thickness is driven by the class rating (3000, 6000 or 9000) per ASME B16.11. The table below summarises the production envelope at the Rajkot plant.
| Fitting type | Specification | Size range | Schedule / class |
|---|---|---|---|
| Buttweld elbow 45 / 90 / 180 deg LR | ASME B16.9 | NPS 1/2 to 24 inch | Sch 10S to XXS |
| Buttweld tee (equal + reducing) | ASME B16.9 | NPS 1/2 to 24 inch | Sch 10S to XXS |
| Buttweld reducer (concentric + eccentric) | ASME B16.9 | NPS 1/2 to 24 inch | Sch 10S to XXS |
| Buttweld cap | ASME B16.9 | NPS 1/2 to 24 inch | Sch 10S to XXS |
| Buttweld stub-end (long / short) | ASME B16.9 / MSS SP-43 | NPS 1/2 to 24 inch | Sch 10S to XXS |
| Socketweld elbow / tee / coupling | ASME B16.11 | NPS 1/2 to 4 inch | Class 3000 / 6000 / 9000 |
| Threaded NPT elbow / tee / coupling | ASME B16.11 + B1.20.1 | NPS 1/2 to 4 inch | Class 3000 / 6000 |
| Bushing / plug | ASME B16.11 | NPS 1/4 to 4 inch | Class 3000 / 6000 |
Fitting Manufacturing Route at TorqBolt
Buttweld and socketweld/threaded fittings follow different routes. The traveller links every fitting back to the parent heat number for full traceability under ASTM B564 or B407.
Buttweld route (B16.9)
- Stock receipt: 800H seamless pipe per ASTM B407 (for hot-formed elbows / caps) or B564 forged blank (for tees / reducers).
- Cut + hot-form: Induction-heat stock to 1180 to 1200 deg C, hot-form elbow on hydraulic press or roll-bend tee on tee-forming machine.
- Trim + bevel: Machine ends to ASME B16.9 length tolerance, bevel to ASME B16.25 30 deg V-prep with 1.6 mm root face.
- Solution anneal: 2050 deg F (1121 deg C), accelerated air cool per B564 / B407.
- NDT: Liquid penetrant per ASTM E165 on full surface; ultrasonic per ASTM E213 on hot-formed sections.
- Hydro test (on call-out): per ASME B16.9 paragraph 7 at 1.5 times max design pressure for size + schedule.
- Marking + protection: Heat number, B564 / B407 grade, size, schedule, manufacturer mark per MSS SP-25.
Socketweld / threaded route (B16.11)
- Forged blank: 800H B564 forged blank cut to fitting mass.
- CNC machine: Internal socket bore and shoulder per B16.11 dimension table, or NPT thread cut per ASME B1.20.1.
- Solution anneal: 2050 deg F + accelerated cool.
- NDT + thread check: PT per ASTM E165, NPT thread plug-gauge check per ASME B1.20.1.
Sizes Stocked and Lead Times
| Fitting class | Stock status | Lead time (after PO) |
|---|---|---|
| NPS 1/2 to 4 inch buttweld, Sch 40 / 80 | Held in B407 stock | 3 to 5 weeks |
| NPS 6 to 12 inch buttweld, Sch 40 / 80 | Held in B407 stock | 5 to 7 weeks |
| NPS 14 to 24 inch buttweld | B407 / B564 on order | 8 to 12 weeks |
| Socketweld 3000 / 6000, NPS 1/2 to 2 inch | Held in B564 stock | 3 to 4 weeks |
| Threaded NPT 3000 / 6000, NPS 1/2 to 2 inch | Held in B564 stock | 3 to 4 weeks |
Fitting-Specific Inspection and Marking
- Dimensional per ASME B16.9 paragraph 4 (buttweld) or ASME B16.11 dimension table (SW / TH).
- Wall thickness measurement per ASTM E797 (UT thickness).
- Liquid penetrant per ASTM E165 on full external + bore surface.
- Ultrasonic on hot-formed elbows per ASTM E213 to confirm no thinning beyond 12.5 percent of nominal wall.
- Hardness per ASTM E18 - Rockwell B 70 to 90 in solution-annealed condition.
- NPT thread gauging per ASME B1.20.1 (ring + plug gauge).
- Hydro test per ASME B16.9 paragraph 7 on call-out at 1.5 times max class pressure.
- Marking: Heat number, B564 or B407 grade, size, schedule or class, manufacturer mark per MSS SP-25.
Typical Fitting Service Conditions
| End-use fitting | Service temperature | Companion application |
|---|---|---|
| Reformer pigtail elbows / return-bends | 815 to 900 deg C | Reformer pigtails |
| Ethylene cracker outlet header tees | up to 1050 deg C tube-skin | Ethylene cracker tubes |
| Fired-heater radiant section reducers | 650 to 815 deg C | Radiant tubes |
| Steam superheater drum nozzle stubs | 540 to 650 deg C | Steam superheaters |
| Heat exchanger inlet / outlet caps | up to 815 deg C | Heat exchanger tubes |
Companion Forms and Spool Fabrication
Incoloy 800H fittings are normally spooled with matching B16.5 flanges, seamless pipe or welded pipe as the run, and joined with the qualified welding procedure (see weldability procedures). For specifications on the parent material, see chemical composition and mechanical properties; for design stress to 1500 deg F, see the ASME design stress tables.
Fittings FAQ
Q. Which ASME bevel detail should I specify on an 800H buttweld fitting?
Standard practice is the ASME B16.25 figure 2 single-V groove at 30 deg with a 1.6 mm root face for wall thickness 3 to 22 mm; for wall above 22 mm a compound bevel per ASME B16.25 figure 4 with a 35 deg outer bevel and 10 deg inner bevel reduces filler-metal consumption. Match the parent procedure qualification record (PQR) under ASME Section IX.
Q. Can you supply 800H buttweld fittings with hydro test per fitting?
Yes on call-out. ASME B16.9 paragraph 7 hydro test at 1.5 times the maximum class pressure at room temperature is run on each fitting and the result is recorded on the EN 10204 type 3.1 or 3.2 certificate. Hydro test adds 1 to 2 weeks to the lead time and a per-fitting test fee.
Q. What is the difference between ASME B16.11 class 3000, 6000 and 9000 socketweld fittings?
The class designation sets the wall thickness and the pressure-temperature rating. Class 3000 covers most utility piping. Class 6000 is used for high-pressure hydrocarbon service and refinery utility lines. Class 9000 is used for very-high-pressure service such as polyethylene reactor jumper lines and steam superheater drum nozzles.
Q. Do you supply NPT threads to ANSI B1.20.1 on 800H fittings?
Yes. NPT threads are cut on a CNC lathe and gauged with ring + plug gauges per ASME B1.20.1. Class 3000 and 6000 fittings up to NPS 4 inch are supplied with NPT thread as standard. NPSM straight thread is supplied on call-out for instrumentation tubing connections.
Q. Can you supply 800H lap-joint stub-ends with matching backing ring in carbon steel?
Yes. The stub-end is 800H per ASME B16.9 / MSS SP-43; the matching lap-joint backing ring is supplied separately in ASTM A105 carbon steel or, for high-temperature service above 425 deg C, in F11 chrome-moly per ASTM A182.
Request a Quote on Incoloy 800H Fittings
Send the project line-list, fitting type, size, schedule or class, end-prep (B16.25 buttweld bevel, NPT thread, socket bore), quantity, ASTM specification, certification class and any PED 2014/68/EU or NACE MR0175 add-ons to our sales desk.
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