Long-Radius Stainless Steel 90 Degree Elbow | Heavy-Duty Use

Long-Radius Stainless Steel 90 Degree Elbow | Heavy-Duty Use

Product Overview

Engineered for demanding industrial applications, our stainless steel bends elbows are precision-crafted to ensure seamless flow redirection in high-pressure and corrosive environments. Designed to meet ASME B16.9, DIN 2605, and ISO 4144 standards, these 90° long-radius (1.5D) elbows minimize turbulence and pressure drop, making them ideal for oil/gas, chemical processing, and marine systems. With stainless steel elbow fittings available in sizes from ½″ to 48″, they guarantee compatibility with global pipeline configurations.

Technical Specifications

Key Properties

1. Tensile & Bend Strength

• Tensile Strength: 515–1050 MPa (Grade 304/316L), optimized for high-stress environments like offshore rigs and chemical plants. Cold-worked variants achieve up to 1200 MPa for extreme conditions.
• Bend Strength: The austenitic microstructure of stainless steel bends elbows ensures resistance to deformation under pressure. Long-radius design reduces friction loss by 30% compared to short-radius elbows.

2. Identification & Traceability

• Laser Etching: Permanent markings include material grade (e.g., SS316L), size, wall thickness, and certification codes (ASME B16.9).
• Color Coding: Optional epoxy-coated ends (silver/black) for rapid identification in multi-pipeline systems.

3. Weight Calculation

Use the formula for stainless steel elbow fittings:
$W=0.387\times S\times (D-S)\times R/1000$

• W: Weight (kg)
• S: Wall Thickness (mm)
• D: Outer Diameter (mm)
• R: Bend Radius (1.5D for long-radius elbows).

Example:
For a 6″ SCH40 elbow (D=168.3mm, S=7.11mm, R=1.5D):
$W\approx 4.8\text{kg}$

4. Why Stainless Steel Rusts?

Despite superior corrosion resistance, environmental factors can cause localized rust:

1. Passive Layer Damage: Scratches or abrasive cleaning disrupt the chromium oxide layer, exposing iron to oxidation.
2. Galvanic Corrosion: Contact with carbon steel in humid environments triggers electrochemical reactions.
3. Chloride Exposure: Coastal or chemical settings accelerate pitting in 316L grades (Mo content mitigates but does not eliminate this).
4. Organic Contaminants: Residual acids or oils degrade surfaces if not sanitized promptly.
5. High-Temperature Scaling: Prolonged exposure >400°C oxidizes chromium, reducing protective properties.

Why Choose Our Stainless Steel Elbows?

1. Certified Durability: Third-party audited (SGS, TÜV) with full material traceability.
2. Custom Solutions: Tailored stainless steel elbow connector dimensions and wall thickness (SCH10S–XXS) for unique projects.
3. Hygienic Design: Mirror-polished surfaces (Ra ≤0.4μm) prevent bacterial growth in food/pharma industries.
4. Global Compliance: Meets ASME, DIN, JIS, and 3A standards for cross-industry compatibility.
5. Lifetime Warranty: Rigorous hydrostatic, radiographic, and ultrasonic testing ensures zero defects.

Elevate your pipeline systems with our stainless steel bends elbows — where precision engineering meets industrial resilience.

Why Our Stainless Steel?

• Superior Material Sourcing: We use only vacuum-refined SS304/316L with ≤0.03% carbon content to enhance weldability and corrosion resistance.
• Advanced Manufacturing: Equipped with 8000-ton hydraulic presses and CNC mandrel bending machines for precision tolerances (±0.5mm).
• Eco-Friendly Practices: 70% recycled stainless steel reduces carbon footprint without compromising strength.
• 24/7 Technical Support: Dedicated engineers assist with installation, maintenance, and custom design.

Trust our stainless steel elbow fittings for unmatched performance in the harshest environments.