Buttweld Fittings – Material Grades & Specifications
Vandan Overseas supplies high-quality Buttweld Pipe Fittings designed for critical industrial piping systems. These fittings are manufactured using premium raw materials and advanced production techniques to ensure excellent performance in high pressure, high temperature, and corrosive environments. Our fittings are widely used in industries such as oil & gas, petrochemical plants, marine engineering, chemical processing, power generation, and infrastructure projects worldwide.
High Strength Materials
Manufactured using carbon steel, stainless steel, alloy steel and duplex steel ensuring durability and high load bearing capacity in industrial pipelines.
Corrosion Resistance
Premium stainless steel and nickel alloy grades protect piping systems from corrosion, oxidation and harsh chemicals.
Precision Engineering
Produced with strict dimensional tolerances as per international standards ensuring perfect fit and leak-free welding connections.
Industrial Applications
Widely used in refineries, petrochemical plants, offshore rigs, marine pipelines and high-pressure process systems.
Material Grades for Buttweld Fittings
| Material | Grade | Standard |
|---|---|---|
| Carbon Steel | ASTM A234 WPB | ASME B16.9 / B16.28 |
| Stainless Steel | 304 / 304L | ASTM A403 |
| Stainless Steel | 316 / 316L | ASTM A403 |
| Alloy Steel | ASTM A234 WP5 / WP9 / WP22 | ASME B16.9 |
| Duplex Steel | UNS S31803 / S32205 | ASTM A815 |
| Nickel Alloys | Inconel 625 / Monel 400 | ASTM B366 |
Technical Specifications
| Specification | Description |
|---|---|
| Size Range | ½” NB to 48” NB (Seamless & Welded) |
| Schedule | SCH 10 to SCH 160 / XXS |
| Types | Elbow (45°, 90°, 180°), Tee (Equal / Reducing), Reducer (Concentric / Eccentric), Cap, Stub End |
| Connection | Buttweld – End beveled for welding |
| Standards | ASME B16.9 / ASME B16.28 / MSS-SP-43 |
| Testing | Hydrostatic Testing, Radiography Testing, PMI Testing, Dimensional Inspection, Visual Inspection |
Quality Assurance
All buttweld fittings supplied by Vandan Overseas undergo strict quality control procedures to ensure superior reliability and durability. Each product is inspected for dimensional accuracy, material composition, surface finish and structural integrity before dispatch.
Products are supplied with Mill Test Certificates (MTC) in accordance with EN 10204 3.1 ensuring complete traceability and compliance with international quality standards.
Industries We Serve
Vandan Overseas supplies high-performance fasteners and engineering components to critical industries worldwide, ensuring reliability, durability, and precision in demanding environments.
Manufacturing Process of Buttweld Fittings
At Vandan Overseas, buttweld fittings are manufactured using advanced production technologies and strict quality control procedures to ensure high strength, dimensional accuracy, and long service life in demanding industrial environments.
Raw Material Selection
The manufacturing process begins with the careful selection of premium raw materials such as billets, plates, and seamless pipes. All materials are verified according to international standards to ensure proper chemical composition, mechanical strength, and corrosion resistance.
Forming Process
The fittings are shaped using advanced forming technologies depending on the required fitting design and size.
- Hot Forming
- Cold Forming
- Hydraulic Press Forming
- Forging
- Extrusion
These processes ensure excellent structural integrity and enable fittings to perform reliably under high pressure and temperature conditions.
Heat Treatment
After forming, the fittings undergo controlled heat treatment processes to enhance mechanical properties and durability.
- Normalizing
- Annealing
- Quenching & Tempering
Heat treatment improves hardness, strength, and resistance to corrosion and extreme operating environments.
Machining & Finishing
Precision machining is performed to achieve accurate dimensions and properly beveled ends required for welding connections. Surface finishing processes may include pickling, shot blasting, polishing, or surface cleaning to improve appearance and corrosion resistance.
Inspection & Testing
Before dispatch, each fitting undergoes strict inspection and quality testing to ensure compliance with international standards and customer requirements.
- Dimensional Inspection
- Hydrostatic Testing
- Radiography Testing
- PMI Testing
- Visual Inspection
Surface Finishing Options
Vandan Overseas provides different surface finishes depending on application requirements. These finishing methods improve corrosion resistance, durability, and product longevity for industrial piping systems.
Pickled & Passivated Finish
Chemical treatment process that removes surface contaminants and enhances corrosion resistance of stainless steel fittings.
Shot Blasted Finish
Metal surface is cleaned using high-velocity steel shots to create a uniform industrial texture and remove scale.
Sand Blasted Finish
Produces a smooth matte surface that improves appearance and surface quality.
Polished Finish
Provides a smooth reflective surface commonly used where appearance and cleanliness are important.
Anti-Rust Protective Coating
Protective coating applied to prevent oxidation during storage, transportation, and long-term use.
Dimensional Standards
Buttweld fittings supplied by Vandan Overseas are manufactured according to internationally accepted dimensional standards to ensure compatibility with global piping systems.
| Standard | Description | Purpose |
|---|---|---|
| ASME B16.9 | Factory-made wrought buttweld fittings | Industrial piping connections |
| ASME B16.28 | Short radius elbows and returns | Compact piping layouts |
| MSS SP-43 | Wrought stainless steel fittings | Corrosion-resistant piping systems |
Dimensional Parameters
Outside Diameter
Ensures proper compatibility with pipe sizes in global piping systems.
Wall Thickness
Determines strength and pressure-handling capability.
Center-to-End Dimensions
Defines precise fitting length and installation accuracy.
Radius of Curvature
Important specification for elbows and curved pipe fittings.
End Preparation
Beveled ends designed for strong and reliable welding connections.
Packaging & Delivery
Export & Supply Capability
Vandan Overseas exports buttweld fittings globally and ensures secure packaging, compliance with international shipping standards, and timely delivery to customers worldwide.