Industries that operate in high-temperature and high-pressure environments require piping components that can perform reliably for long periods without failure. ASTM B366 Inconel 800H Buttweld Fittings are specifically engineered for such demanding conditions. These fittings are widely recognized for their excellent strength, oxidation resistance, and structural stability at elevated temperatures.
We are a trusted Incoloy 800H fittings manufacturer, supplier, and stockholder in India, offering a complete range of ASTM B366 Incoloy 800H buttweld pipe fittings for critical industrial applications. Our products are manufactured and supplied in accordance with international standards, ensuring consistent quality, long service life, and safe operation.
What Are ASTM B366 Inconel 800H Buttweld Fittings?
ASTM B366 is the standard specification for wrought nickel alloy buttweld fittings, covering materials designed for corrosive and high-temperature environments. Inconel (Incoloy) 800H is a nickel-iron-chromium alloy with controlled carbon content and grain size, making it suitable for long-term exposure to heat.
ASTM B366 Incoloy 800H Buttweld Pipe Fittings are welded directly to pipes, forming a smooth and continuous joint. This design minimizes leakage risk, reduces pressure loss, and improves flow efficiency— making them ideal for critical piping systems.
Why Choose Incoloy 800H ASTM B366 Pipe Fittings?
Based on real industry usage, Incoloy 800H is chosen when reliability at elevated temperatures is non-negotiable.
Key benefits include:
- Excellent resistance to oxidation and carburization
- High creep and rupture strength
- Good resistance to stress corrosion cracking
- Structural stability at temperatures above 600°C
- Easy fabrication and welding characteristics
Because of these properties, Nickel Alloy 800H Butt Weld Pipe Fittings are commonly used in continuous high-heat operations such as furnaces, heat exchangers, and petrochemical plants.
Range of ASTM B366 Incoloy 800H Buttweld Fittings We Offer
We manufacture and supply a comprehensive range of fittings for diverse industrial requirements.
➤ Incoloy 800H Pipe Elbow
As a reliable Incoloy 800H Pipe Elbow stockist, we offer:
- 45° and 90° elbows
- Long radius and short radius elbows
- ASME SB366 Incoloy 800H Pipe Elbow options
These elbows provide smooth directional flow with minimal pressure loss.
➤ Incoloy 800H Pipe Tee
Our Incoloy 800H Pipe Tee range includes:
- Equal tees
- Reducing tees
- ANSI B16.9 Incoloy 800H Seamless Tee
We are a trusted Incoloy 800H Tee manufacturer in Mumbai, India, supplying tees with precise dimensions and excellent weldability
➤ Incoloy 800H End Cap
As a Global Nickel Alloy 800H End Cap Supplier & Manufacturer in India, we supply end caps that:
- Provide secure pipeline closure
- Withstand high temperature and pressure
- Prevent leakage and contamination
➤ Incoloy 800H Reducer
- Concentric reducers
- Eccentric reducers
- WERKSTOFF NO. 1.4958 Buttweld Reducer Supplier solutions
They ensure smooth flow transition between different pipe sizes.
➤ Incoloy 800H Equal Cross
As an Incoloy 800H Equal Cross Manufacturer, we offer crosses designed for:
- Uniform stress distribution
- High dimensional accuracy
- Long service life
➤ Incoloy 800H Large Diameter Buttweld Fittings
We specialize in Incoloy 800H large diameter buttweld fittings, suitable for:
- Power plants
- Heat exchangers
- Petrochemical pipelines
Custom fabrication is available based on project drawings.
Applications of Incoloy 800H ASTM B366 Pipe Fittings
Because of their thermal stability and corrosion resistance, these fittings are widely used in:
- Petrochemical and chemical processing plants
- Oil and gas refineries
- Power generation and thermal plants
- Heat exchangers and boilers
- Furnaces and heat-treatment equipment
- Fertilizer and ammonia plants
Specifications of ASTM B366 Incoloy 800H Buttweld Fittings
| Parameter | Details |
|---|---|
| Material Standard | ASTM B366 / ASME SB366 |
| Alloy Grade | Incoloy 800H |
| UNS Number | N08810 |
| Werkstoff Number | 1.4958 |
| Manufacturing Type | Seamless / Welded |
| Size Range | ½” NB to 48” NB |
| Schedule | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, XXS |
| Dimensional Standards | ANSI B16.9, ANSI B16.28 |
| Heat Treatment | Solution Annealed |
| End Connection | Buttweld |
| Surface Finish | Pickled, Sand Blasted, Polished |
Chemical Composition of Incoloy 800H (ASTM B366)
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 30.0 – 35.0 |
| Chromium (Cr) | 19.0 – 23.0 |
| Iron (Fe) | Balance |
| Carbon (C) | 0.05 – 0.10 |
| Aluminum (Al) | 0.15 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 |
| Manganese (Mn) | ≤ 1.50 |
| Silicon (Si) | ≤ 1.00 |
| Sulfur (S) | ≤ 0.015 |
Mechanical Properties of ASTM B366 Incoloy 800H
| Property | Value |
|---|---|
| Tensile Strength | ≥ 450 MPa |
| Yield Strength (0.2% Offset) | ≥ 170 MPa |
| Elongation | ≥ 30% |
| Hardness | Max 170 HB |
| Creep Resistance | Excellent at elevated temperatures |
Nickel Alloy 800H Butt Weld Pipe Fittings Suppliers
ASTM B366 Inconel 800H Buttweld Fittings are the preferred choice for high-temperature industrial systems that demand strength, stability, and reliability. With a wide product range, controlled chemical composition, proven mechanical properties, and real manufacturing expertise, we deliver fittings that perform in the most challenging environments.
If you are looking for a dependable Incoloy 800H pipe fittings manufacturer, supplier, and stockholder in India, we are fully equipped to support your project with confidence and quality.
Request Your ASTM B366 Inconel 800H Buttweld Fittings Quote Today!

