Large Diameter Buttweld Pipe Bending
Wall Thickness: SCH 10 to SCH XXS (up to 100mm on custom orders)
Bending Radius: 1.5D (Long Radius), 3D, 5D, 7D, 10D, and custom radii
Bending Angles: 15°, 30°, 45°, 60°, 90°, 180°, or customized specific angles
Material Grades:
Carbon Steel: ASTM A234 WPB, WPC; API 5L Gr.B to X80
Low-Temperature Steel: ASTM A420 WPL6
High-Yield/Alloy Steel: ASTM A860 WPHY 42/52/60/70
Stainless Steel: ASTM A403 WP304/L, WP316/L
End Finish: Beveled Ends (per ASME B16.25) for seamless on-site welding
- Free Samples
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Large Diameter Buttweld Pipe Bending Manufacturer
Hebei Jinsheng Pipe Fitting Manufacturing Co., Ltd. specializes in large diameter buttweld pipe bending with over 40 a long time of fabricating fabulousness. Our progressed acceptance twisting innovation produces exactness twists up to 60" distance across with custom radii from 3D to 20D. We keep up strict divider thickness resilience and convey month to month shipments surpassing 50 holders to worldwide oil and gas ventures. Our office ranges 7,000 square meters with yearly deals outperforming RMB 100 million, guaranteeing solid supply capacity for your basic pipeline applications.
Large Diameter Buttweld Pipe Bending Overview
Product speaks to a basic component in advanced pipeline foundation. These precision-engineered twists are fundamental for oil and gas transportation frameworks where complex directing conditions request predominant stream characteristics and basic integrity.
Our fabricating handle utilizes state-of-the-art acceptance twisting innovation to make consistent bended segments that keep up ideal inside breadth and divider thickness dispersion. This guarantees most extreme transport proficiency whereas assembly the requesting necessities of universal pipeline projects.
Key Features & Advantages
Controlled Wall Thinning Technology
Our exclusive acceptance bowing handle keeps up exact temperature and speed control. This guarantees the extrados divider thickness surpasses least plan prerequisites per ASME B31.3 and B31.8 standards.
Minimal Ovality Control
We keep up strict out-of-roundness resistances to guarantee consistent field welding arrangement. This diminishes expensive on-site re-rounding operations and quickens establishment schedules.
Post-Bend Heat Treatment (PBHT)
Our calibrated heaters perform normalizing or extinguishing & hardening forms. This kills remaining push and reestablishes ideal grain structure, anticipating localized fragile zones.
Piggability Guarantee
Smooth internal transitions ensure 100% compatibility with intelligent pigs used for pipeline inspection and maintenance operations.
Comprehensive Coating Services
We provide internal and external coating options including 3LPE, FBE, and liquid epoxy systems for complete corrosion protection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturing Standards | ASME B16.49, ASME B16.9, SY/T 5257 |
| Bending Radii | 3D, 5D, 6D, 8D, 10D (Custom up to 20D) |
| Bending Angles | 15°, 30°, 45°, 60°, 90° (Custom angles available) |
| Size Range - Seamless | 1/2" – 24" |
| Size Range - Welded | Up to 60" (LSAW/HSAW) |
| Wall Thickness | SCH 10s to SCH 160, XXS |
| End Finish | Transition taper boring or ASME B16.25 beveling |
Standards & Certifications
Our large diameter buttweld pipe bendings comply with multiple international standards ensuring global project compatibility:
- ASME B16.49 - Specific for Induction Bends
- ASME B16.9 - Factory-Made Wrought Buttwelding Fittings
- SY/T 5257 - Chinese Petroleum Industry Standard
- ISO 9001 - Quality Management System
- CE Marking - European Conformity
- GOST-R - Russian Federation Certification
Chemical Composition & Mechanical Properties
Pipeline Steel Grades:
- API 5L Gr.B, X42, X52, X60, X65, X70 (PSL1 & PSL2)
High-Yield/Low-Temperature:
- ASTM A860 WPHY 42/52/60/70
- ASTM A420 WPL6
Corrosion Resistant:
- ASTM A403 WP304/L, WP316/L
- Duplex 2205
All materials undergo comprehensive testing including chemical analysis and mechanical property verification to ensure compliance with project specifications.
Manufacturing Process
Our large diameter buttweld pipe bending process follows stringent quality protocols:
- Material Selection - Mother pipes with optimized wall thickness
- Induction Heating - Controlled heating to austenitic temperature range
- Precision Bending - Computer-controlled bending with real-time monitoring
- Immediate Cooling - Proprietary quenching system for property control
- Heat Treatment - Normalizing or tempering to restore mechanical properties
- Quality Testing - Dimensional inspection and hardness verification
Surface Finish & Coating Options
Standard Finishes:
- Pickled and passivated surface
- Shot blasted finish
- Machined ends per specification
Coating Systems:
- 3LPE - Three-layer polyethylene
- FBE - Fusion bonded epoxy
- Internal Liquid Epoxy - Enhanced flow characteristics
- Custom Coating - Project-specific requirements
Applications
Product serves critical roles across multiple industries:
Oil & Gas Pipelines
- Transmission lines requiring directional changes
- Offshore platform connections
- Refinery piping systems
Power Generation
- Steam distribution networks
- Cooling water systems
- Boiler feed lines
Chemical Processing
- Process piping with space constraints
- Tank farm interconnections
- High-pressure applications
Infrastructure Projects
- Water treatment facilities
- District heating systems
- Industrial complexes
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Packaging & Delivery
We ensure safe transportation through professional packaging methods:
- Wooden Boxes - For smaller diameter bends
- Steel Cradles - For large diameter sections
- Protective Caps - End protection during transit
- Marking System - Clear identification and traceability
Our logistics team coordinates efficient shipping with monthly capacity exceeding 50 containers to global destinations.
Customization Service
Every project presents unique challenges. Our engineering team provides:
Custom Radius Design - Up to 20D radius capability
Compound Bends - Multiple bends on single pipe sections
Special Angles - Any angle per isometric drawings
Material Upgrades - Enhanced properties for extreme conditions
Coating Modifications - Application-specific protection systems
Quality Control
Our comprehensive quality system ensures consistent excellence:
Incoming Inspection - Raw material verification
Process Monitoring - Real-time parameter tracking
Dimensional Testing - Precision measurement equipment
Non-Destructive Testing - Ultrasonic and radiographic inspection
Final Certification - Complete material test reports
FAQ
Q: What advantage does induction bending offer over standard elbows?
A: Larger radius significantly reduces pressure drop and turbulence. The smooth internal profile allows pig passage for pipeline inspection and maintenance.
Q: How do you maintain mechanical properties in high-yield steels?
A: Our proprietary cooling and tempering process restores yield and tensile strengths to API 5L specifications after the heating cycle.
Q: What is your wall thinning tolerance?
A: We achieve much tighter control than the industry standard 12.5%. By selecting optimized mother pipe thickness, finished bends meet design pressure requirements throughout the arc.
Q: Can you produce compound bends?
A: Yes, our equipment creates multiple bends on single pipe lengths, reducing field welds and potential leak points in complex installations.
Contact Us
Ready to discuss your large diameter buttweld pipe bending requirements? Contact our technical team at admin@jsfittings.com for expert consultation and competitive quotations.
Send Inquiry
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