Specification

Buttweld Fittings Specifications

MRB Forge manufactures buttweld fittings in accordance with international standards and project-specific requirements.

Parameter Details
Size Range ½” NB to 48” NB
Material Grades Carbon Steel, Stainless Steel, Alloy Steel, Duplex & Super Duplex Steel, Nickel Alloys
Wall Thickness SCH 10 to SCH XXS
Pressure Rating Suitable for ANSI Class 150 to 2500
Standards ASME B16.9, ASME B16.28, MSS SP-43, ASTM, ANSI, ISO
Manufacturing Process Seamless & Welded
Surface Finish Pickled, Passivated, Shot Blasted, Machined
Inspection Third-Party Inspection Available
Testing PMI, Hydrostatic, Radiographic, Ultrasonic, Dimensional Inspection
Types

Types of Buttweld Fittings

MRB Forge manufactures a complete range of buttweld fittings for various piping applications.

Buttweld Elbows

Available in 45°, 90°, and 180° configurations, elbows are used to change the direction of flow while maintaining smooth fluid movement and minimizing pressure loss.

Buttweld Elbows
Buttweld Tees

Buttweld tees are designed to branch pipelines efficiently and are available in equal tee and reducing tee configurations.

Buttweld Tees
Buttweld Reducers

Reducers provide smooth transitions between different pipe sizes. We manufacture concentric and eccentric reducers for various industrial applications.

Buttweld Reducers
Buttweld Pipe Caps

Pipe caps are used to close the ends of pipelines securely and protect piping systems during operation or future expansion.

Buttweld Pipe Caps
Buttweld Stub Ends

Stub ends are used with lap joint <a href="https://mrbforge.com/product/flanges/">Flanges</a> to simplify maintenance and reduce overall flange costs in piping systems.

Buttweld Stub Ends
Buttweld Crosses

Buttweld crosses provide four-way pipeline connections and are used where multiple branch connections are required.

Buttweld Crosses
Custom Buttweld Fittings

We manufacture custom buttweld fittings according to customer drawings, project specifications, and international engineering standards.

Custom Buttweld Fittings

MRB Forge manufactures buttweld fittings in a wide range of corrosion-resistant and high-strength materials.

Carbon Steel Buttweld Fittings

Carbon steel fittings offer excellent strength, durability, and cost-effectiveness for general industrial and high-pressure applications. Common grades include ASTM A234 WPB and WPC.

Stainless Steel Buttweld Fittings

Stainless steel fittings provide outstanding corrosion resistance and hygienic performance. Available grades include SS 304, 304L, 316, 316L, 321, and 904L.

Alloy Steel Buttweld Fittings

Alloy steel fittings are designed for elevated temperature and pressure applications requiring enhanced mechanical properties.

Duplex & Super Duplex Buttweld Fittings

Duplex and super duplex fittings offer exceptional resistance to chloride stress corrosion cracking and are ideal for offshore and marine environments.

Nickel Alloy Buttweld Fittings

Nickel alloy fittings provide superior performance in highly corrosive environments and extreme temperatures found in chemical processing industries.

Dimensions, Sizes & Pressure Ratings

Our buttweld fittings are manufactured in a wide range of dimensions to suit various industrial piping systems.

  • Size Range: ½” NB to 48” NB
  • Wall Thickness: SCH 10 to SCH XXS
  • Pressure Classes: Suitable for ANSI Class 150, 300, 600, 900, 1500 & 2500
  • Connection Type: Butt Weld
  • Manufacturing: Seamless & Welded
  • Design Standards: ASME B16.9, ASME B16.28, MSS SP-43

Every fitting is manufactured with precision to ensure proper alignment, easy installation, and leak-free operation.

Buttweld Fittings Testing & Quality Assurance

Quality remains our highest priority throughout the manufacturing process.
Every buttweld fitting undergoes comprehensive testing, including:

  • Positive Material Identification (PMI)
  • Hydrostatic Testing
  • Radiographic Testing (RT)
  • Ultrasonic Testing (UT)
  • Hardness Testing
  • Visual Inspection
  • Dimensional Inspection
  • Third-Party Inspection

These inspections ensure each fitting meets international quality standards and customer specifications.

MRB Forge manufactures buttweld fittings in compliance with globally recognized standards.

Process

Buttweld Fittings Manufacturing Process

Our buttweld fittings manufacturing process is designed to ensure dimensional accuracy, weld integrity and compliance with international standards on every order.

  • Raw Material Procurement & Mill Certificate Verification
  • Chemical Composition & Mechanical Property Testing
  • Cutting & Forming to Required Shape and Dimensions
  • Hot Forming, Extrusion & Press Operations
  • Heat Treatment & Normalising
  • Machining & End Beveling Operations
  • Dimensional Inspection & Verification
  • Non Destructive Testing & Pressure Testing
  • Final Quality Approval & Dispatch

Each stage is carefully monitored to ensure full compliance with ASME B16.5, B16.47 and customer specific project requirements.

Our buttweld fittings are widely used in numerous industrial sectors.

Oil & Gas Industry

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Used in high pressure pipelines and process piping requiring reliable leak proof connections with Pipe Spool assemblies.

Petrochemical Plants

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Suitable for aggressive chemical process piping requiring strong and durable welded connections.

Chemical Processing Industries

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Provide secure connections in corrosive chemical environments handling acids and aggressive process fluids.

Power Generation Plants

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Used in steam, feed water and cooling piping systems across power generation facilities.

Refineries

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Widely used in refinery process piping requiring high pressure and high temperature performance.

Offshore & Marine Projects

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Designed for offshore platforms and marine installations requiring corrosion resistant piping connections.

Water & Wastewater Treatment Plants

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Used in water distribution and wastewater management piping systems requiring durable connections.

EPC & Infrastructure Projects

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Widely specified by EPC contractors for large scale industrial and infrastructure piping projects.