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ASTM A234 WP11-S 180 Degree U Bend For Piping Systems

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ASTM A234 WP11-S 180 Degree U Bend For Piping Systems

Brand Name : YuHong

Model Number : ASTM A234 WP11-S 180 Degree U Bend

Certification : ISO,PED, TUV, ABS, DNV, GL , LR , KR, BV, CCS, COST

Place of Origin : China

MOQ : 1 PC

Price : Negotiable

Payment Terms : T/T,L/C AT SIGHT

Supply Ability : According to Clients' requirements

Delivery Time : Generally within 30 Days

Packaging Details : Ply-wooden Cases/Pallets

Product Name : 180 Degree Return Bend

Specification : ASTM A234

Material : WP11-S

Radius : LR or SR (Depend on Customer's Requirements)

Surface : Black Painted or Oiled

Test : Size Inspection, Visual Inspection, NDE Test...

Size Standard : ASME B16.9

Application : Heat Exchangers, Piping Systems, Oil and Gas Industry, Water Tretment

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ASTM A234 WP11-S 180 Degree U Bend For High Temperature And Pressure Application
Product Specifications
Product Name 180 Degree Return Bend
Specification ASTM A234
Material WP11-S
Radius LR or SR (Depend on Customer's Requirements)
Surface Black Painted or Oiled
Test Size Inspection, Visual Inspection, NDE Test
Size Standard ASME B16.9
Application Heat Exchangers, Piping Systems, Oil and Gas Industry, Water Treatment
Product Description

A 180-degree U-bend is a pipe fitting that curves back on itself in a semi-circular or U-shaped pattern, changing the flow direction by 180 degrees. It is commonly used in piping systems where space constraints or thermal expansion management require a tight directional reversal.

Key Features
  • Shape & Geometry: Forms a complete half-circle (U-shape) with specified bend radius (R) as a multiple of pipe diameter
  • Types: Short Radius (1D) for tight spaces, Long Radius (1.5D+) for smoother flow, or custom engineered radii
  • Manufacturing: Hot induction bending for thick walls, cold bending for smaller pipes, or mandrel bending for smooth interiors
  • Materials: Carbon steel, alloy steel (ASTM A234 WP11), stainless steel, or nickel alloys
  • End Connections: Plain ends for welding, beveled ends for butt welding, or threaded ends for screw connections
Advantages vs. Two 90° Bends: Fewer welds reduce leak risks, lower pressure drop for smoother flow, and more compact design for tight spaces.
ASTM A234 WP11 Chemical Composition (%)
Element WP11 Class 1 WP11 Class 2 WP11 Class 3
Carbon (C) 0.05-0.15 0.05-0.20 0.05-0.20
Manganese (Mn) 0.30-0.60 0.30-0.80 0.30-0.80
Phosphorus (P) ≤ 0.030 ≤ 0.030 ≤ 0.030
Sulfur (S) ≤ 0.030 ≤ 0.030 ≤ 0.030
Silicon (Si) 0.50-1.00 0.50-1.00 0.50-1.00
Chromium (Cr) 1.00-1.50 1.00-1.50 1.00-1.50
Molybdenum (Mo) 0.44-0.65 0.44-0.65 0.44-0.65
Nickel (Ni) ≤ 0.50 ≤ 0.50 ≤ 0.50
Vanadium (V) - - ≤ 0.03
Columbium (Cb) - - ≤ 0.08
ASTM A234 WP11 Mechanical Properties
Property WP11 Class 1 WP11 Class 2 WP11 Class 3
Tensile Strength (MPa) ≥ 415 ≥ 485 ≥ 485
Yield Strength (MPa) ≥ 205 ≥ 275 ≥ 275
Elongation (%) (min) 20 20 20
Hardness (HB) (max) 197 197 197
Notes: WP11 Class 1 is standard grade, while Classes 2 & 3 offer higher strength through modified heat treatment (Class 3 includes micro-alloying elements). Suitable for high-temperature service up to 593°C (1100°F).
Applications
  • Power Plants: Boiler systems, steam lines, and thermal expansion loops
  • Oil & Gas Refineries: Crude oil processing and high-pressure gas lines
  • Chemical Plants: Resistant to sulfur compounds and acidic/alkaline environments
  • Steam Systems: Steam distribution networks up to 593°C
  • Heating/Cooling: Heat recovery systems and condensers
ASTM A234 WP11-S 180 Degree U Bend For Piping Systems

Product Tags:

semi circular 15mm return bend

      

Oiled 15mm return bend

      

ASME B16.9 return bend plumbing

      
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