SS 316L Buttweld Fittings are stainless steel pipe fittings with low carbon content utilized in joining piping systems in sectors like oil & gas, petrochemicals, food processing, power generation, and maritime applications. These fittings are manufactured to ASTM A403 WP316L fittings and ASME B16.9 SS 316L fittings specifications, offering superior corrosion resistance, weldability and durability in high pressure settings. Typical goods include elbows, tees, reducers, caps, stub ends and bends in seamless and welded forms.
316L Stainless Steel Butt Welding Fitting
We manufacture and market a complete range of SS 316L Buttweld fittings for high performance pipe systems that require excellent corrosion resistance and longevity. These fittings are widely utilized in industries where there is exposure to chlorides, dampness, chemicals and elevated temperatures.
Our Stainless Steel 316L butt weld fittings are dimensionally accurate and leak proof and are made using high quality raw material and innovative production procedures in compliance with international standards.
316 L stainless steel is a low-carbon version created to minimize carbide precipitation during welding, making these fittings suitable for welded pipe systems and corrosive service. The material also exhibits very good resistance to pitting and crevice corrosion as compared to the common 304 stainless steel grades.
We are involved in offering Seamless SS 316L Buttweld Fittings and Welded SS 316L Buttweld Fittings in different sizes, schedules and configurations to meet diverse industrial requirements.
Table of Contents
- ➤ What are ASTM A403 WP316L Fittings?
- ➤ Advantages of Stainless Steel 316L Butt Weld Fittings
- ➤ Types of SS 316L Buttweld Fittings We Offer
- ➤ ASME B16.9 SS 316L Fittings Specifications
- ➤ Chemical Composition of ASTM A403 WP316L Stainless Steel Buttweld Fittings
- ➤ Mechanical Properties of ASME SA403 WP316L Fittings
- ➤ Dimensions of ASME B16.9 316L Butt Weld Fittings
- ➤ SS 316L Buttweld Fittings Weight Chart
- ➤ Seamless SS 316L Buttweld Fittings vs Welded SS 316L Buttweld Fittings
- ➤ Applications of 316L Stainless Steel Pipe Fittings
- ➤ Why Choose Us for SS 316L Buttweld Fittings?
What are ASTM A403 WP316L Fittings?
ASTM A403 WP316L fittings are wrought austenitic stainless steel pipe fittings manufactured for pressure piping applications. These fittings are produced according to ASTM A403 specifications and conform to dimensional standards such as ASME B16.9.
The “WP316L” grade indicates:
- W = Wrought
- P = Pressure applications
- 316L = Low carbon molybdenum-bearing stainless steel
These fittings are extensively used in:
- Chemical processing plants
- Offshore platforms
- Marine applications
- Pharmaceutical industries
- Food processing plants
- Heat exchangers
- Water treatment facilities
- Refineries and petrochemical industries
Advantages of Stainless Steel 316L Butt Weld Fittings
- Excellent Corrosion Resistance – The addition of molybdenum improves resistance against chlorides, chemicals, and marine environments.
- Superior Weldability – Low carbon content minimizes carbide precipitation during welding operations.
- High Strength & Durability – Suitable for high-pressure and high-temperature piping systems.
- Hygienic Surface Finish – Widely used in food processing and pharmaceutical industries due to smooth surface properties.
- Long Service Life – 316L fittings offer reliable performance even in aggressive industrial environments.
Types of SS 316L Buttweld Fittings We Offer
➤ 90 Degree & 45 Degree Elbows
- Used for changing flow direction in piping systems while maintaining smooth fluid movement.
➤ Equal & Reducing Tees
- Designed for branch connections in process piping systems.
➤ Concentric & Eccentric Reducers
- Suitable for reducing pipe diameter while controlling flow characteristics.
➤ Pipe Caps
- Used to close pipe ends securely in industrial pipelines.
➤ Stub Ends
- Installed with lap joint flanges for systems requiring frequent dismantling.
➤ Long Radius & Short Radius Bends
- Ideal for pressure piping systems requiring gradual directional changes. Our complete range of 316L stainless steel pipe fittings is available in seamless, welded, fabricated, and custom configurations.
ASME B16.9 SS 316L Fittings Specifications
| Specification | Details |
|---|---|
| Product Name | SS 316L Buttweld Fittings |
| Material Grade | Stainless Steel 316L |
| Standards | ASTM A403 / ASME SA403 |
| Dimensions | ASME B16.9, MSS SP-43 |
| Size Range | ½” NB to 48” NB |
| Thickness | SCH 5 to SCH XXS |
| Form | Seamless / Welded / Fabricated |
| End Connection | Butt Weld |
| Pressure Rating | As per ASME standards |
| Surface Finish | Pickled, Passivated, Polished |
| Origin | India |
Mechanical Properties of ASME SA403 WP316L Fittings
| Property | Value |
|---|---|
| Tensile Strength | 485 MPa Min |
| Yield Strength | 170 MPa Min |
| Elongation | 40% Min |
| Hardness | 95 HRB Max |
| Density | 8.0 g/cm³ |
| Melting Range | 1375 – 1400°C |
Chemical Composition of ASTM A403 WP316L Stainless Steel Buttweld Fittings
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.03 Max |
| 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 |
Dimensions of ASME B16.9 316L Butt Weld Fittings
90 Degree Elbow Dimensions
| NPS | Center to End (A) |
|---|---|
| 1/2” | 38 mm |
| 3/4” | 38 mm |
| 1” | 38 mm |
| 1 1/2” | 57 mm |
| 2” | 76 mm |
| 3” | 114 mm |
| 4” | 152 mm |
Reducer Dimensions
| Large End | Small End | Length |
|---|---|---|
| 2” | 1” | 76 mm |
| 3” | 2” | 89 mm |
| 4” | 2” | 102 mm |
| 6” | 4” | 140 mm |
SS 316L Buttweld Fittings Weight Chart
90 Degree Long Radius Elbow Weight Chart
| Size | SCH 10 | SCH 40 |
|---|---|---|
| 1/2” | 0.08 kg | 0.11 kg |
| 1” | 0.21 kg | 0.32 kg |
| 2” | 0.72 kg | 1.05 kg |
| 4” | 2.85 kg | 4.20 kg |
| 6” | 6.30 kg | 8.50 kg |
Seamless SS 316L Buttweld Fittings vs Welded SS 316L Buttweld Fittings
| Feature | Seamless | Welded |
|---|---|---|
| Manufacturing Process | Made from seamless pipe | Made from welded pipe |
| Strength | Higher pressure resistance | Economical solution |
| Surface Finish | Uniform | Good finish |
| Cost | Higher | Lower |
| Applications | Critical applications | General industrial use |
We supply both Seamless SS 316L buttweld fittings and Welded SS 316L buttweld fittings based on customer requirements and project specifications.
Applications of 316L Stainless Steel Pipe Fittings
Our ASTM A403 WP316L Stainless Steel Buttweld Fittings are widely used in::
- Oil & Gas Pipelines
- Petrochemical Plants
- Chemical Processing Units
- Food & Beverage Industry
- Pharmaceutical Industry
- Marine & Offshore Projects
- Heat Exchangers
- Power Generation Plants
- Water Treatment Facilities
- Pulp & Paper Industry
To ensure premium quality, all ASME SA403 WP316L fittings undergo strict inspection and testing procedures
Why Choose Us for SS 316L Buttweld Fittings?
- Extensive stock availability
- Competitive pricing
- International quality standards
- Custom sizes available
- Fast delivery schedules
- Experienced technical support
- Third-party inspection support
- Global export capability
Our experience in supplying stainless steel piping products helps customers source reliable solutions for critical industrial applications.
Related Stainless Steel Fittings
- Stainless Steel 304L Buttweld Fittings
- Stainless Steel 304H Pipe Fittings
- Stainless Steel 310S Pipe Fittings
- Stainless Steel 310H Pipe Fittings
- Stainless Steel 317L Buttweld Fittings
- Stainless Steel 321 Buttweld Fittings
- Stainless Steel 321H Buttweld Fittings
Frequently Asked Questions
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