Industrial Stainless Steel 90 Degree Elbow | 5" Exhaust Flow

Product Overview

Our stainless steel reducing elbow is engineered for high-performance industrial exhaust systems, offering superior durability, corrosion resistance, and seamless directional flow optimization. Designed to meet ASME B16.9, DIN 2605, and ANSI standards, this 90-degree elbow ensures minimal pressure drop and maximum efficiency in demanding environments, including HVAC, chemical processing, and marine applications.

Technical Specifications

Key Attributes

1. Tensile & Bend Strength

Our stainless steel reducing elbow exhibits exceptional mechanical properties, with tensile strength exceeding 515 MPa for 304 and 485 MPa for 316L grades. The bend strength is rigorously validated through hydrostatic testing (1.5× working pressure) and ultrasonic inspections, ensuring resistance to deformation under extreme thermal cycling and vibrational stress.

2. Identification & Marking

Each elbow is laser-etched with traceable identifiers:

• Material Grade (e.g., 304, 316L)
• Size (OD × Wall Thickness)
• Certification Marks (ASME, DIN, ISO)
• Batch Number (for full supply-chain transparency).

3. Weight Calculation

Weight (kg) = $(OD-WT)\times WT\times 0.02466\times Length$ × 1.5 (90° factor).
Example: A 5" Sch40 elbow (OD: 141.3mm, WT: 6.55mm) weighs approximately 4.2 kg. For stainless steel sweep elbows with larger radii (e.g., 36" CLR), a multiplier of 2.0 is applied.

4. Corrosion Resistance & Anti-Rust Mechanism

While stainless steel inherently resists rust due to its chromium oxide layer (12-20% Cr), localized corrosion may occur under specific conditions:

• Chloride Exposure: Coastal or chemical environments can cause pitting; 316L (2% Mo) is recommended for such cases.
  
  
• Mechanical Damage: Scratches or weld splatter disrupt the passive layer, necessitating post-installation passivation.
• Galvanic Corrosion: Avoid contact with dissimilar metals like carbon steel in humid conditions.

Manufacturing Process

1. Material Selection: Premium-grade billets from audited mills (e.g., AISI 304/316L).
2. Forming: Hot extrusion or mandrel bending for seamless integrity; forged variants for high-pressure systems.
3. Welding: TIG welding with ER308/316L filler rods, followed by post-weld heat treatment (PWHT).
4. Surface Treatment: Electro-polishing (for sanitary applications) or shot blasting (industrial use).
5. Quality Assurance: 100% radiographic testing (RT), hydrostatic checks, and spectral analysis.

Applications

• HVAC & Exhaust Systems: Optimized for stainless steel stove pipe elbow configurations in commercial kitchens and industrial vents.
• Chemical Processing: Resistant to acidic/alkaline media (pH 2–12).
• Marine Engineering: Mo-enhanced 316L variants for saltwater environments.
• Pharmaceutical & Food: 3A-certified, mirror-finished stainless steel sweep elbows for hygienic fluid transfer.

Why Choose Our Stainless Steel Elbows?

1. Uncompromised Quality: Each product undergoes 12+ inspections, including UT, RT, and PMI testing.
2. Global Compliance: Meets ASME, DIN, JIS, and GB standards for cross-border projects.
3. Customization: Tailored radii (1D–10D), threading (NPT/BSPT), and reducing designs for complex layouts.
4. Sustainability: 100% recyclable materials with ISO 14001-certified production.
5. Sanitary Excellence: Ra ≤ 0.8 μm finish for FDA/GMP-regulated industries.

Why Us?
As a leader among stainless steel elbow manufacturers, we combine decades of metallurgical expertise with cutting-edge production technology. Our products are trusted in critical sectors like oil & gas, nuclear power, and shipbuilding, with certifications from third-party agencies like TÜV and SGS. Partner with us for ISO 9001-certified solutions that reduce lifecycle costs and downtime by 30%.