High-Pressure Stainless Steel 90 Degree Elbow | Seamless Design

Product Detail Page: High-Pressure Stainless Steel 90 Degree Elbow | Seamless Design

Technical Specifications

Parameter	Details
Model Number	HP-SS90-SEAMLESS
Material	Stainless Steel 304, 316L, 321, 904L (ASTM A403, ASTM A182)
Standard	ANSI B16.9, ASME B16.25, MSS SP-75, DIN 2605, ISO 4144
Angle	90° (Long Radius: 1.5D; Short Radius: 1D)
Size Range	1/8" to 48" (DN6 to DN1200)
Wall Thickness	SCH10S, SCH40S, SCH80S, SCH160, XXS (1.5mm–40mm)
Pressure Rating	3000 PSI (207 bar) at 20°C
Hardness	HRB 75–95 (Rockwell B Scale)
Surface Finish	Seamless Electro-Polished (Ra ≤0.6μm) or Mirror Finish
Connection Type	Stainless Steel Threaded Elbow (NPT, BSP), Stainless Steel Tube Elbow (Butt-Welded), or Custom Flanged
Temperature Range	-200°C to 850°C
Certifications	ISO 9001:2015, PED 2014/68/EU, NACE MR0175, TÜV

Mechanical Properties

Tensile Strength

Designed for high-pressure industrial systems, our stainless steel tubing 90 degree elbow delivers exceptional tensile strength:

Grade 304: ≥515 MPa
Grade 316L: ≥485 MPa (annealed) / ≥620 MPa (cold-worked)
This ensures resistance to deformation under extreme hydraulic or pneumatic stress, making it ideal for oil refineries, chemical plants, and nuclear reactors.

Bend Strength

The seamless design eliminates weak joints, enhancing bend strength (≥210 MPa for Grade 304). Rigorous hydrostatic testing (1.5× rated pressure) ensures reliability in cyclic loading applications like HVAC and marine piping.

Identification & Marking

Each stainless steel tube elbow is laser-etched with traceable identifiers:

Material Grade (e.g., 316L)
Size (NPS and DN)
Pressure Class (e.g., 3000#)
Heat Number (for material traceability)
Compliance Markings (ANSI, ASME)
This system aligns with global quality protocols and simplifies compliance audits.

Weight Calculation Formula

Weight (kg) = $(O D - W T) \times W T \times 0.02466 \times L e n g t h (mm)$ / 1000
Example: For a 4" SCH80S elbow (OD = 114.3mm, WT = 8.56mm):
Weight ≈ 1.82 kg. Custom weights for stainless steel threaded elbow variants include thread depth and collar dimensions.

Why Stainless Steel Elbows May Corrode?

While stainless steel tubing is corrosion-resistant, specific conditions can trigger localized rust:

Chloride Stress Corrosion: Exposure to saltwater or chlorine (common in coastal or chemical plants) may affect Grade 304. Upgrade to 316L with 2-3% molybdenum for improved resistance.
Galvanic Corrosion: Direct contact with carbon steel or copper in humid environments creates electrochemical reactions. Use dielectric unions or insulating gaskets.
Welding Defects: Poor argon shielding during welding causes chromium carbide precipitation. Our elbows undergo post-weld pickling and passivation to restore the oxide layer.
Abrasive Contaminants: Sand or particulate in fluid flow erodes the surface. Specify electro-polished finishes for smoother, erosion-resistant interiors.

Key Advantages

Seamless Integrity: No welds mean zero leakage risk, critical for hazardous gas or cryogenic liquid transport.
Versatility: Compatible with stainless steel tubing systems in HVAC, pharmaceuticals, and desalination plants.
Custom Threading: Stainless steel threaded elbow variants include NPT, BSPP, and BSPT for global compatibility.

Why Choose Us?

As a leader in precision-engineered stainless steel tube elbows, we offer:
✅ Certified Excellence: ISO 9001, PED, and NACE-certified production lines.
✅ Rapid Delivery: 10,000+ stainless steel threaded elbow and seamless variants in stock for 48-hour shipping.
✅ Technical Expertise: Free CAD models and pressure-drop calculations for system optimization.
✅ Sustainability: 100% recyclable materials and zero-waste manufacturing processes.
✅ Global Reach: Local warehouses in the US, EU, and Asia—search "stainless steel tubing 90 degree elbow near me" for fast access.

High-Pressure Stainless Steel 90 Degree Elbow | Seamless Design