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Ultimate Stainless Steel 90 Degree Elbow | 5" Heavy-Wall
Ultimate Stainless Steel 90 Degree Elbow | 5" Heavy-Wall
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Ultimate Stainless Steel 90 Degree Elbow | 5" Heavy-Wall
Product Overview
Our stainless steel welded elbow is engineered for extreme industrial applications, delivering unmatched durability, corrosion resistance, and precision flow redirection. Certified to ASME B16.9, ANSI B16.11, and DIN 2605 standards, this 90-degree heavy-wall elbow is designed for high-pressure systems in oil & gas, chemical processing, and marine engineering. Its weldable stainless steel elbows construction ensures leak-proof performance in environments demanding rigorous hygiene and structural integrity.
Technical Specifications
| Category | Details |
|---|---|
| Material | 304/316L Stainless Steel (AISI-certified, 18% Cr, 10% Ni, 2% Mo for 316L) |
| Angle | 90° (Long Radius: 1.5D / Short Radius: 1D) |
| Size Range | 1/2" to 48" (DN15–DN1200), custom street elbow stainless steel up to 72" available |
| Wall Thickness | Sch5s, Sch10, Sch40, Sch80, Sch160 (ASME B36.19M compliant) |
| Pressure Rating | 150 lb to 6000 lb (PN2.5–3.2 MPa) |
| Surface Finish | Mirror Polished (Ra ≤ 0.8 μm) / Sanitary Grade (3A-certified) |
| Connection Type | Butt-Welded / Threaded (NPT, BSPT) / Clamped |
| Certifications | ASME, ANSI, DIN, ISO 9001, PED 2014/68/EU, NACE MR0175 |
| Temperature Range | -40°F to 1200°F (-40°C to 650°C) |
| Hardness | 70-90 HRB (Rockwell B Scale) |
Key Attributes
1. Tensile & Bend Strength
Our stainless steel welded elbow achieves tensile strength ≥515 MPa (304) and ≥485 MPa (316L), validated through hydrostatic testing at 1.5× working pressure. The bend strength is optimized for high-stress applications, such as offshore oil rigs and nuclear power plants, with resistance to deformation under cyclic thermal loads.
2. Identification & Marking
Each elbow is laser-etched for traceability:
- Material Grade (e.g., 304, 316L)
- Size (OD × Wall Thickness)
- Certification Marks (ASME, DIN, ISO)
- Batch Number (ensuring supply-chain transparency).
3. Weight Calculation
Weight (kg) = × 1.5 (90° factor).
Example: A 5" Sch40 elbow (OD: 141.3mm, WT: 6.55mm) weighs approximately 4.2 kg. For street elbow stainless steel with threaded ends, add 10% to account for connector density.
4. Corrosion Resistance & Anti-Rust Mechanism
Despite stainless steel’s chromium oxide layer (12-20% Cr), localized rust may occur due to:
- Chloride Exposure: Coastal or chemical environments cause pitting; 316L (2% Mo) is recommended.
- Mechanical Damage: Scratches or weld splatter disrupt the passive layer—post-installation passivation is advised.
- Galvanic Corrosion: Avoid contact with carbon steel or copper in humid settings.
Manufacturing Process
- Material Selection: AISI-certified 304/316L billets from audited mills.
- Forming: Hot extrusion for seamless elbows; forged variants for high-pressure systems.
- Welding: TIG welding with ER308/316L filler rods, followed by post-weld heat treatment (PWHT).
- Surface Treatment: Electro-polishing (Ra ≤ 0.8 μm) or shot blasting for industrial use.
- Quality Assurance: 100% radiographic testing (RT), hydrostatic checks, and spectral analysis.
Applications
- Oil & Gas: High-pressure pipelines in refineries and offshore platforms.
- Chemical Processing: Resistant to acids (pH 2–12) and alkalis.
- Marine Engineering: Mo-enhanced 316L variants for saltwater durability.
- Pharmaceutical: 3A-certified weldable stainless steel elbows for sterile fluid transfer.
Why Choose Us?
As a leader in stainless steel welded elbow manufacturing, we guarantee:
- Certified Excellence: ISO 9001, PED, and NACE certifications with full traceability.
- Custom Solutions: Tailored threading (NPT/BSPT), radii (1D–10D), and heavy-wall designs.
- Global Compliance: Meets ASME, DIN, and JIS standards for international projects.
- Sustainability: 100% recyclable materials and ISO 14001-certified production.
- 24/7 Support: Dedicated engineers for technical drawings and bulk order optimization.
