ASTM B366 Inconel 601 Buttweld Fittings are widely used in industries where high temperature strength, oxidation resistance, and long-term reliability are critical. These fittings are manufactured from Inconel® Alloy 601 (UNS N06601), a nickel–chromium alloy specifically designed to perform in extreme heat and corrosive environments.

We manufacture and supply a comprehensive range of ASTM B366 Inconel 601 Buttweld Fittings that conform to international standards such as ASTM B366, ASME SB366, ANSI B16.9, ANSI B16.28, MSS SP-43, and MSS SP-79. Our fittings are engineered for safe welding, dimensional accuracy, and extended service life, making them suitable for demanding industrial applications across the globe.

What Are ASTM B366 Inconel 601 Buttweld Fittings?

ASTM B366 Inconel Alloy 601 Buttweld Fittings are pipe fittings used to change the direction, diameter, or flow of piping systems using a butt welding connection. These fittings are produced from UNS N06601, also known as Werkstoff Nr. 2.4851, and are commonly used in systems operating under high temperatures and corrosive conditions.

Buttweld fittings create a smooth, continuous joint once welded, which helps reduce pressure losses, prevents leakage, and improves overall pipeline strength. Because of this, ASTM B366 UNS N06601 Weld Fittings are preferred in critical services such as power generation, petrochemical processing, and furnace systems.

Key Features of Inconel 601 Buttweld Fittings

Based on our manufacturing and supply experience, Inconel 601 Buttweld Fittings offer several performance advantages:

  • Excellent resistance to oxidation and scaling at high temperatures
  • Strong mechanical properties even under continuous heat exposure
  • Good resistance to chloride stress corrosion cracking
  • Smooth internal surface for improved flow efficiency
  • Easy weldability with compatible nickel-based alloys
  • Long service life with minimal maintenance

These characteristics make ASTM B366 Inconel 601 Buttweld Fittings a reliable choice for both standard and severe service applications.

Types of ASTM B366 Inconel 601 Buttweld Fittings We Supply

We offer a complete range of ASTM B366 Inconel 601 Buttweld Fittings in multiple sizes and configurations.

➤ ASTM B366 UNS N06601 Elbows

Elbows are used to change pipeline direction. Available options include:

  • 45° and 90° elbows
  • ANSI B16.9 Buttweld 3D Elbow
  • Alloy DIN 2.4851 SR Elbow

➤ ANSI B16.28 Inconel 601 Equal Tee

The ANSI B16.28 Inconel 601 Equal Tee allows uniform flow distribution and is widely used in high-temperature piping networks.

➤ ASTM B366 UNS N06601 Concentric Reducer

Concentric reducers are used where a smooth reduction in pipe diameter is required while maintaining a common centerline.

➤ ASME SB366 Inconel 601 Long Stub

The ASME SB366 Inconel 601 Long Stub is commonly used with lap joint flanges, offering easy alignment and simplified maintenance.

➤ Werkstoff Nr. 2.4851 Nipple

Manufactured from DIN 2.4851, these nipples ensure compatibility, strength, and corrosion resistance in high-temperature services.

Applications of Inconel® Alloy 601 Industrial Pipe Fittings

With proven performance in harsh environments, Inconel® Alloy 601 Industrial Pipe Fittings are used in:

  • Power generation plants
  • Petrochemical and oil refineries
  • Chemical processing industries
  • Heat treatment furnaces
  • Cement and thermal power plants
  • Waste incineration systems
  • High-temperature exhaust and ducting systems

These fittings are especially suitable for environments involving oxidizing atmospheres and continuous heat exposure.

ASTM B366 Inconel 601 Buttweld Fittings – Specifications Chart

Parameter Details
Product Type ASTM B366 Inconel 601 Buttweld Fittings
Material Grade Inconel® Alloy 601
UNS Number UNS N06601
Werkstoff No. Werkstoff Nr. 2.4851
Manufacturing Standards ASTM B366 / ASME SB366
Dimensional Standards ANSI B16.9, ANSI B16.28
MSS Standards MSS SP-43, MSS SP-79
Fitting Types Elbow, Tee, Reducer, Stub End, Nipple
Size Range ½” NB to 48” NB
Wall Thickness Sch 10, Sch 20, Sch 40, Sch 80, XS, XXS
End Connection Buttweld
Surface Finish Pickled, Annealed, Shot Blasted
Heat Treatment Solution Annealed
Testing Chemical, Mechanical, PMI, NDT (if required)
Certification EN 10204 3.1 / 3.2

Chemical Composition of Inconel 601 (UNS N06601)

Element Composition (%)
Nickel (Ni) 58.0 – 63.0
Chromium (Cr) 21.0 – 25.0
Iron (Fe) Balance
Aluminum (Al) 1.0 – 1.7
Carbon (C) Max 0.10
Manganese (Mn) Max 1.0
Silicon (Si) Max 0.50
Sulfur (S) Max 0.015
Copper (Cu) Max 1.0

Mechanical Properties of ASTM B366 Inconel 601 Buttweld Fittings

Property Value
Tensile Strength Min 550 MPa
Yield Strength (0.2% Offset) Min 205 MPa
Elongation Min 30%
Hardness Max 90 HRB
Density 8.11 g/cm³
Melting Range 1360°C – 1411°C

Why Choose Us for ASTM B366 Inconel 601 Buttweld Fittings?

  • Strong experience with nickel alloy piping solutions
  • Compliance with international standards
  • Reliable supply for domestic and export markets
  • Competitive pricing with consistent quality
  • Technical support from inquiry to dispatch

Our focus remains on performance, safety, and long-term customer trust.

ANSI B16.9 Buttweld 3D Elbow Supplier & Stockholder in Mumbai, India

ASTM B366 Inconel 601 Buttweld Fittings manufactured from UNS N06601 / Werkstoff Nr. 2.4851 provide exceptional resistance to heat, oxidation, and corrosion. With excellent mechanical properties and reliable weld performance, these fittings are ideal for high-temperature and critical industrial applications.

Whether you require ASTM B366 UNS N06601 Elbows, ANSI B16.28 Equal Tees, Concentric Reducers, Long Stubs, or DIN 2.4851 SR Elbows, we deliver solutions that meet global standards and real operational demands.


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