180 degree butt weld elbow

180 Degree Butt Weld Elbow - ASTM/EN Compliant Return Bend

Product Overview

The 180 Degree Butt Weld Elbow from JS FITTINGS delivers ASTM A234/A403 compliant performance for your U-turn piping requirements. With 42 years of manufacturing expertise, our precision-engineered beveling and uniform wall thickness ensure full-penetration groove welds. You get ISO 9001/CE certified reliability with dimensional accuracy per ASME B16.9 standards. Our advanced production lines deliver consistent quality across 30,000 tons annual output, providing leak-proof welded joints that eliminate gasket failure risks in high-pressure applications up to Schedule XXS ratings.

Key Features & Advantages

Precision-Engineered Design

· Beveled ends match exact pipe wall thickness for seamless welding

· Uniform wall thickness distribution prevents stress concentration

· Smooth internal bore minimizes pressure drop and turbulence

Superior Flow Management

· Long radius options (3x NPS) reduce friction loss by 40% vs short radius

· Short radius variants (2x NPS) optimize space utilization in compact installations

· Eliminates multiple fitting connections reducing potential leak points

Structural Integrity

· Full-penetration welds provide continuous stress distribution during thermal expansion

· Prevents steam hammer effects in high-velocity systems

· Superior fatigue resistance compared to threaded alternatives

Technical Specifications

 Standards & Certifications

· ASME B16.9 - Factory-made wrought butt-welding fittings

· ASTM A234/A403 - Material specifications compliance

· ISO 9001:2015 - Quality management system

· CE Marking - European conformity standards

· GOST-R - Russian federation compliance

Chemical Composition & Mechanical Properties

Carbon Steel A234 WPB:

· Carbon: ≤0.30%, Manganese: 0.29-1.06%

· Tensile Strength: ≥415 MPa, Yield Strength: ≥240 MPa

Stainless Steel A403 WP316:

· Chromium: 16.0-18.0%, Nickel: 10.0-14.0%, Molybdenum: 2.0-3.0%

· Tensile Strength: ≥515 MPa, Yield Strength: ≥205 MPa

Manufacturing Process

1. Material Selection - Certified mill test certificates verify Chemical composition

2. Hot Forming - Seamless pipe sections formed using mandrel bending

3. Machining - CNC beveling ensures precise weld preparation angles

4. Heat Treatment - Stress relieving and normalizing per ASME requirements

5. Testing - Hydrostatic pressure testing and dimensional verification

Surface Finish & Coating Options

· Pickled & Passivated - Standard stainless steel finish

· Sandblasted - Sa 2.5 surface preparation for coating adhesion

· Epoxy Coating - 100-meter automated painting line application

· Hot-Dip Galvanizing - Superior corrosion protection for carbon steel

· Custom Coatings - Client-specified protective systems available

Applications

Petrochemical Industry:

Heat exchanger tube bundles and thermal fluid circulation systems benefit from our 180 Degree Butt Weld Elbow design. You achieve reliable U-bend connections that withstand thermal cycling without cracking.

Power Generation:

Superheater and reheater applications require high-temperature performance. Our alloy steel grades resist creep deformation while maintaining pressure boundary integrity.

Marine & Offshore:

Compact engine room installations utilize our short radius options for cooling water recirculation. Duplex stainless grades provide seawater corrosion resistance.

· Protective Packaging - Wooden cases with moisture-resistant barriers

· Marking Standards - Heat number traceability and size identification

· Global Logistics - Dedicated network ensures timely delivery

· Documentation - Mill test certificates and dimensional reports included

Customization Service

· Special Alloys - Hastelloy, Inconel, Monel available

· Non-Standard Dimensions - Custom radius and wall thickness options

· Surface Treatments - Specialized coatings for extreme environments

· Testing Requirements - PMI, RT, UT inspection services

Quality Control

Our 35,000 m² facility maintains rigorous quality standards throughout production. Each fitting undergoes dimensional verification, chemical composition analysis, and pressure testing. PETROBRAS certification validates our commitment to oil & gas industry requirements.

Strict control over wall thinning rates and ovality during the hot-forming process, verified by ultrasonic thickness gauging.

Certificates

Our commitment to quality is validated by numerous international certifications:

1. ISO 9001:2015: Quality Management System
2. CE Marking: Compliance with European safety standards
3. GOST-R: Approval for Russian market
4. API 6A: American Petroleum Institute certification
5. PED 2014/68/EU: Pressure Equipment Directive compliance

Customer Reviews

"We tested the elbows and flanges, their performance is very nice. We will make the new purchase plan for the warehouse."

"The flanges are exactly in line with our requirement technically and competitive commercially."

"I am thoroughly impressed with the quality of the seamless pipe fittings provided by JS FITTINGS. Each piece we've received has been meticulously crafted, displaying top-notch workmanship."

The beveling on the 180-degree return bends was perfect, making the robotic welding process very smooth."

FAQ

Q: What's the difference between long radius and short radius elbows?

A: Long radius provides 40% less pressure drop but requires more space. Short radius fits tight installations with slightly higher flow resistance.

Q: Can you supply non-standard wall thicknesses?

A: Yes, we manufacture custom wall thicknesses to match your specific pressure requirements and pipe schedules.

Q: What testing documentation do you provide?

A: Mill test certificates, dimensional reports, and pressure test certificates are standard. Additional NDT testing available upon request.

Contact Us

Get expert technical support and quotes for your 180 Degree Butt Weld Elbow requirements. Email: admin@jsfittings.com