In the intricate world of piping systems, the butt weld 90 degree elbow stands as a critical component, enabling seamless directional changes in fluid transportation networks. As a leading global manufacturer, Haihao Group specializes in delivering high-quality elbows that meet the stringent demands of diverse industries.

A234 WPB carbon steel elbows

Global Standards Compliance of 90 degree elbow:

Haihao Group’s butt welding 90-degree elbows are certified to over 15 international standards, ensuring seamless integration into projects worldwide:

ASME B16.9 Standard(North America): Governs factory-made wrought steel fittings.

EN 10253-2 Standard(Europe): Specifies requirements for butt-welding fittings.

DIN 2605 Standard(Germany): Tailored for carbon and alloy steel elbows.

ISO 15590-1 Standard: Covers pipeline fittings for hydrocarbon services.

JIS B2311/B2312 Standard(Japan): Aligns with Japanese industrial standards.

BS 1640 Standard(UK): Ensures compatibility with British pipeline systems.

These certifications guarantee dimensional accuracy, pressure ratings, and material integrity, making our elbows compatible with projects worldwide.

UNS 32750 90 Degree LR Elbows

Material Grade Selection of 90 degree elbow:

Crafted from premium alloys, our elbows withstand extreme temperatures, pressures, and corrosive environments:

Carbon Steel:

• ASTM A234 WPB: General-purpose applications.
• ASTM A860 WPHY 42/52/60/65/70: High-yield strength for oil/gas pipelines.

Stainless Steel:

• ASTM A403 WP304/304L: Food processing and pharmaceuticals.
• ASTM A403 WP316/316L: Marine and chemical plants.
• ASTM A403 WP321: High-temperature resistance.

Alloy Steel:

• ASTM A234 WP11/WP22: Power generation and refineries.
• ASTM A234 WP5/WP9: High-pressure steam systems.

Low-Temperature Carbon Steel:

• ASTM A420 WPL6: Cryogenic applications (-45°C to -195°C).

pipeline products stainless steel elbows

Customizable Dimensions and Specifications of 90 degree elbow:

Haihao Group offers unparalleled flexibility in elbow dimensions:

Size Range: ½” to 72″ (15mm to 1800mm) to accommodate small-scale laboratories to large industrial complexes.

Wall Thickness: Sch 5s to Sch 160, including STD, XS, and XXS, tailored to pressure requirements.

Bending Radius: 1D (short radius), 1.5D, and custom radii (e.g., 3D/5D) for optimizing flow dynamics.

Manufacturing Methods: Seamless (hot forming) for critical applications and welded (ERW/LSAW) for cost efficiency.

Tolerances: Laser-measured to ±0.8mm for diameters ≤24″, ±1.5mm for larger sizes.

Advanced Quality Assurance

Every elbow undergoes seven-stage inspection:

PMI Testing: X-ray fluorescence spectroscopy verifies material chemistry.

NDT Protocols:

• Radiographic Testing (RT): Detects internal weld imperfections.
• Ultrasonic Testing (UT): Identifies subsurface laminations.
• Dye Penetrant Testing (PT): Reveals micro-cracks on surface finishes.

Hydrostatic Pressure Test: Sustained pressure at 1.5x MAWP (Maximum Allowable Working Pressure).

Charpy Impact Test: Ensures toughness at -20°C to 450°C.

Hardness Testing: Rockwell/Brinell scales confirm material ductility.

Visual Inspection: 100% dimensional check via CMM (Coordinate Measuring Machine).

Traceability: Laser-engraved heat codes link to mill certificates.

Export-Grade Packaging

To protect elbows during global transit, we employ:

• Wooden Cases: Vapor barrier lining and shock-absorbent foam for LCL shipments.
• Steel Strapping: Reinforced bundling for FCL loads (anti-rust coated).
• Corrosion Prevention: VCI (Vapor Corrosion Inhibitor) paper and silica gel desiccants.
• Labeling: 3D barcode scanning for customs clearance and inventory tracking.

Industrial Applications

Haihao Group’s butt weld 90 degree elbows are trusted in:

• Oil & Gas: Subsea pipelines, FPSO units, and LNG terminals.
• Petrochemicals: Distillation columns and reactors handling aggressive media.
• Power Generation: Boiler feedwater systems and HRSG modules.
• Shipbuilding: Ballast lines and engine exhaust networks.
• Construction: HVAC ductwork and fire suppression systems.

Why Partner with Haihao Group?

• Certified by classification society: ABS, BV, DNV, EAC, PED, RINA, RMRS, NORSOK M650, API Q1, ISO 9001, ISO 14001, ISO 45001.
• Advanced FEA & Design Calculations for Piping & Flanges
• Rich experience in transportation

With 40 years of industry leadership, we combine technical mastery with customer-centric innovation. Whether you’re designing an LNG terminal, a petrochemical complex, or a municipal water network, our elbows, tees, and flanges deliver performance you can trust.