180 Degree Steel Pipe Elbow for Heat Exchangers & U-Bends
High-quality 180 degree steel pipe elbows for industrial piping. Carbon/stainless steel, seamless/welded, Sch10-Sch160. Ideal for u-bends & boilers. Get a fast quote today!
Description
Material & Specification Diversity
- Carbon Steel: ASTM A234 WPB (for high-temperature and high-pressure steam, oil & gas service)
- Stainless Steel: ASTM A403 WP304/316L (corrosion-resistant, suitable for chemical and food-grade media)
Specially, stainless steel 180 degree elbows deliver outstanding performance in acidic or chloride-containing environments. The smooth inner wall greatly reduces the risk of medium retention.
- Alloy Steel: ASTM A234 WP11/WP22 (for high-temperature creep working conditions)
Size Range: 1/2″ – 48″ (DN15 – DN1200)
Wall Thickness Schedule: Sch10, Sch20, Sch40, Sch80, Sch160, XXS
Bending Radius: Standard 1.5D (long radius); customized 2D and 3D are available to meet special flow resistance requirements.
Connection Type & Pressure Class
- Connection Method: Butt Weld (BW) as the primary option; Socket Weld (SW) and Threaded (NPT/BSPT) types are available for small sizes (≤2″).
- Pressure Class: Compliant with ASME B16.9/B16.11 standards, with a maximum rating up to Class 2500 (approx. 42MPa).
180 Degree Steel Pipe Elbow Parameter Table
| Parameter Item | Typical Value / Range |
|---|---|
| Nominal Size | 1/2″ – 48″ (DN15 – DN1200) |
| Wall Thickness Schedule | Sch10, Sch20, Sch40, Sch80, Sch160, XXS |
| Bending Radius (R) | 1.5D, 2D, 3D (D = Outer Diameter of Pipe) |
| Material Standard | ASTM A234 WPB / A403 WP304/316L / A234 WP11/WP22 |
| Manufacturing Process | Seamless (≤24″) / Plate Fabricated Welded (≥26″) |
| End Type | Plain End, Bevel End (Butt Weld), Threaded, Socket Weld |
Structural Features & Technical Advantages
- Integral Forming: Large-diameter 180° elbows adopt hot pushing technology, ensuring uniform wall thickness without thinning areas.
- Intergranular Corrosion Resistance: All stainless steel products pass ASTM A262 Practice E inspection to guarantee premium corrosion resistance.
- Full Dimensional Inspection: 100% traceable Radiographic Testing (RT) or Ultrasonic Testing (UT) is supported.
Application Scenarios
- Shell and Tube Heat Exchangers: Turnaround sections for U-type tube bundles
- Boilers & Heating Furnaces: 180° furnace tube turnaround to improve heat exchange efficiency
- Petrochemical Plants: Layer transition turning for space-limited pipe racks
- Marine Ballast Systems: 316L 180° elbows with excellent seawater corrosion resistance
Purchaser FAQ
Q1: What is the difference between a 180-degree elbow and two 90-degree elbows?
A: A single 180-degree elbow combines two weld joints into one, reduces pressure drop by 30-40% compared with two 90° elbows connected with straight pipe, and saves axial installation space. It requires a relatively larger bending radius (generally 1.5D or 2D). It is the optimal solution for compact U-bend design of heat exchangers.
Q2: Can you provide a 3″ 180 degree elbow in stainless steel 316L with a 2D radius?
A: Yes. We custom manufacture 3″ 180 degree elbow in ASTM A403 WP316L, with optional bending radius up to 3D. For 2D radius (R=2×OD), the center-to-center distance is 152.4mm (6 inches). This type is widely used in chloride-rich working environments. PMI test reports and ferrite control certificates for duplex stainless steel grades can be provided on request. The MOQ for standard schedule products starts from 5 pieces.
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