Stainless Steel 316H Buttweld Fittings are ASTM A403 WP316H stainless steel grade high temperature resistant pipe fittings. They are utilized extensively in the petrochemical, refinery, power generating, heat exchanger and high pressure pipe systems for their great creep strength, corrosion resistance and excellent weldability. Types most commonly used are elbows, tees, reducers, caps, stub ends and crosses made to ASME B16.9.

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Manufacturer of SS 316H Buttweld Fittings in India

We are a trustworthy SS 316H Buttweld Fittings Manufacturer delivering top-grade fittings for high temperature and corrosive industrial applications. Our collection of ASTM A403 WP316H Buttweld Fittings are constructed from high grade raw materials and certified to international quality standards ensuring dimensional accuracy, durability and leak proof performance.

Being a reputed Stainless Steel 316H Fittings Supplier, we offer fittings in seamless and welded forms that are suited for industries like:

  • Oil & Gas
  • Chemical Processing
  • Power Plants
  • Heat Exchangers
  • Petrochemical Plants
  • Marine Applications
  • Food Processing
  • Pharmaceutical Industries

Our products are available in customized sizes, schedules, wall thicknesses, and specifications to meet diverse project requirements worldwide.

What are Stainless Steel 316H Buttweld Fittings?

SS 316H Pipe Fittings are pipe connection components manufactured from high carbon stainless steel grade 316H. The “H” designation indicates higher carbon content, which improves high-temperature strength and creep resistance.

These fittings are designed for joining pipes through welding methods to provide strong and permanent connections in industrial piping systems.

Key Benefits of SS 316H Buttweld Fittings
  • Excellent corrosion resistance
  • High-temperature strength
  • Superior creep resistance
  • Good weldability
  • Long service life
  • Excellent mechanical properties
  • Suitable for pressure applications
  • Smooth flow characteristics

Types of ASTM A403 WP316H Buttweld Fittings

We manufacture and supply a complete range of ASME B16.9 SS 316H Fittings including:

➤ SS 316H Elbow

Used to change piping direction at 45°, 90°, and 180° angles.

➤ SS 316H Tee

Allows branch flow connection from the main pipeline.

➤ SS 316H Reducer

Used to connect pipes of different diameters.

➤ SS 316H Pipe Cap

Installed at pipe ends to stop fluid flow.

➤ SS 316H Stub End

Used with lap joint flanges for easy dismantling.

➤ SS 316H Cross

Provides four-way pipe connections.

➤ SS 316H Bend

Designed for smooth directional changes in piping systems.

SS 316H Seamless Buttweld Fittings

Our SS 316H Seamless Buttweld Fittings are manufactured from seamless pipes to deliver higher strength and pressure handling capacity. These fittings are widely preferred for critical applications where leakage prevention and structural integrity are essential.

Advantages of Seamless Fittings
  • Better pressure resistance
  • Uniform grain structure
  • No weld defects
  • Improved corrosion resistance
  • Longer operational life

SS 316H Welded Pipe Fittings

We also supply SS 316H Welded Pipe Fittings for applications requiring cost-effective piping solutions. Welded fittings are manufactured using high-quality welded pipes with excellent dimensional consistency.

Features of Welded Pipe Fittings
  • Economical option
  • Available in large sizes
  • Excellent finish
  • Easy installation
  • Suitable for low and medium pressure systems

ASTM A403 WP316H Buttweld Fittings Specifications

Specification Details
Product Name Stainless Steel 316H Buttweld Fittings
Material Grade SS 316H
UNS Number UNS S31609 Pipe Fittings
DIN Number DIN 1.4919 Buttweld Fittings
Standard ASTM A403 WP316H
Dimensions ASME B16.9, MSS SP-43
Type Seamless / Welded / Fabricated
Size Range ½” NB to 48” NB
Wall Thickness SCH 5S to SCH XXS
Form Elbow, Tee, Reducer, Cap, Stub End
End Type Beveled End
Pressure Rating SCH 10 to SCH 160
Manufacturing Method Hot Formed / Cold Formed
Testing PMI, Hydro Test, Radiography, IGC

ASTM A403 WP316H Mechanical Properties

Property Value
Tensile Strength 515 MPa min
Yield Strength 205 MPa min
Elongation 40% min
Hardness 217 HB (max)
Density 8.0 g/cm³
Melting Point 1375 – 1400°C

ASTM A403 WP316H Chemical Composition

Element Composition (%)
Carbon (C) 0.04 – 0.10
Chromium (Cr) 16.0 – 18.0
Nickel (Ni) 10.0 – 14.0
Molybdenum (Mo) 2.0 – 3.0
Manganese (Mn) 2.0 Max
Silicon (Si) 0.75 Max
Phosphorus (P) 0.045 Max
Sulfur (S) 0.03 Max
Nitrogen (N) 0.10 Max
Iron (Fe) Balance

ASTM A403 WP316H Dimensions

ASTM A403 WP316H Dimensions Table

Nominal Pipe Size Outside Diameter Center to End (90° Elbow)
1/2" 21.3 mm 38 mm
1" 33.4 mm 38 mm
2" 60.3 mm 76 mm
4” 114.3 mm 152 mm
6” 168.3 mm 229 mm
8” 219.1 mm 305 mm
10” 273.0 mm 381 mm
12” 323.8 mm 457 mm

SS 316H Buttweld Fittings Weight Chart

Size SCH 40 Weight (Kg)
½” Elbow 0.12
1" Elbow 0.25
2" Elbow 0.85
4" Elbow 3.20
6" Elbow 7.40
8" Elbow 14.50

Applications of SS 316H Pipe Fittings

Industries Using SS 316H Buttweld Fittings

These fittings are extensively used in:

  • Refineries
  • Offshore Platforms
  • Fertilizer Plants
  • Heat Transfer Systems
  • Pressure Vessels
  • LNG Plants
  • Desalination Plants
  • Nuclear Power Plants
  • Chemical Processing Industries

The higher carbon content of 316H makes it especially suitable for elevated temperature services.

Related Stainless Steel Fittings

We also supply:

Buy 316H Stainless Steel Buttweld Fittings

If you are looking to Buy 316H Stainless Steel Buttweld Fittings, we provide reliable solutions with competitive pricing, fast delivery schedules, and complete documentation support.

Our team assists customers with:

  • Technical guidance
  • Material selection
  • Custom dimensions
  • Bulk project requirements
  • Export packaging
  • Third-party inspection

As a global SS 316H Pipe Fittings Exporter, we supply products to clients across:

  • UAE
  • Saudi Arabia
  • Qatar
  • USA
  • Europe
  • Singapore
  • South Africa
  • Australia

Why Choose ASTM A403 WP316H Pipe Fittings?

Our ASTM A403 WP316H Buttweld Fittings are manufactured with strict quality control and advanced production methods. Every fitting undergoes multiple inspections to ensure high reliability in industrial operations.

Quality Tests Performed
  • Positive Material Identification (PMI)
  • Hydrostatic Testing
  • Ultrasonic Testing
  • Radiography Testing
  • Intergranular Corrosion Testing
  • Dimensional Inspection
  • Hardness Test

Frequently Asked Questions

ASTM A403 WP316H is a specification for wrought stainless steel pipe fittings used in pressure piping applications. The 316H grade offers enhanced high-temperature strength.
SS 316H contains higher carbon content than SS 316, which improves creep resistance and tensile strength at elevated temperatures.
Yes, SS 316H Buttweld Fittings offer excellent weldability and are commonly used in welded piping systems.
These fittings are manufactured according to ASTM A403, ASME B16.9, MSS SP-43, and other international standards.
Industries such as petrochemical, power generation, oil & gas, and chemical processing commonly use these fittings.

Request Your Stainless Steel 316H Buttweld Fittings Quote Today!