YUHONG HOLDING GROUP CO., LTD
| Payment Terms | TT, LC |
| Supply Ability | According to Clients' requirements |
| Delivery Time | Generally within 30 Days |
| Packaging Details | Ply-wooden Cases/Pallets |
| Product Name | 180 Degree Elbow SR |
| Specification | ASTM A234 |
| Material | WP9-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 |
| Brand Name | Yuhong |
| Model Number | ASTM A234 WP9-S 180 Degree Elbow SR |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | TT, LC | Supply Ability | According to Clients' requirements |
| Delivery Time | Generally within 30 Days | Packaging Details | Ply-wooden Cases/Pallets |
| Product Name | 180 Degree Elbow SR | Specification | ASTM A234 |
| Material | WP9-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 |
| Brand Name | Yuhong | Model Number | ASTM A234 WP9-S 180 Degree Elbow SR |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | China |
| High Light | 180 Degree Elbow SR ，ASTM A234 WP9-S 180 Degree Elbow ，High Temperature 180 Degree Elbow | ||
ASTM A234 WP9-S 180 Degree Elbow SR For High Temperature and Pressure Application
A 180°Elbow SR (Short Radius) is a pipe fitting that changes the direction of flow by 180 degrees (a complete U-turn) with a tighter bend radius compared to a Long Radius (LR) elbow.
Below are the key details:
1. Material: ASTM A234 WP9
Chemical Composition of ASTM A234 WP9
The composition is based on heat analysis (in weight percentage, %):
| Element | Composition (%) |
| Carbon (C) | ≤ 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
| Silicon (Si) | 0.50 – 1.00 |
| Chromium (Cr) | 8.00 – 10.00 |
| Molybdenum (Mo) | 0.90 – 1.10 |
| Nickel (Ni) | ≤ 0.40 |
| Vanadium (V) | ≤ 0.03 |
| Columbium (Cb/Nb) | ≤ 0.08 |
Notes:
Mechanical Properties of ASTM A234 WP9
| Property | Value |
| Tensile Strength (min) | 415 MPa (60,000 psi) |
| Yield Strength (min) | 205 MPa (30,000 psi) |
| Elongation (min) | 20% (in 50 mm / 2 in) |
| Hardness (max) | 197 HBW (Brinell) / 92 HRB (Rockwell B) |
Notes:
Comparison with Other Grades
| Grade | Cr (%) | Mo (%) | Tensile (MPa) | Common Use |
| WP5 | 4.0–6.0 | 0.45–0.65 | 415 | Moderate temp |
| WP9 | 8.0–10.0 | 0.90–1.10 | 415 | High temp/pressure |
| WP11 | 1.0–1.50 | 0.44–0.65 | 415 | Steam services |
2. 180°Elbow
A pipe fitting that changes the direction of flow by 180 degrees (U-turn).
Commonly used in piping systems where a complete reversal of flow is needed.
SR (Short Radius)
The center-to-end dimension is 1.0 × Nominal Pipe Size (NPS).
Compared to Long Radius (LR) elbows (1.5 × NPS), SR elbows have a tighter bend, saving space but increasing flow resistance.
Why Use WP9-S (Seamless) & Short Radius?
| Feature | Advantage |
| Material (WP9) | High creep strength, oxidation resistance (9% Cr, 1% Mo). |
| Seamless (S) | No weld seams = better pressure integrity, ideal for critical services. |
| Short Radius (SR) | Saves space in congested areas (e.g., skid-mounted plants, ship piping). |
| 180° Bend | Allows full flow reversal where piping must double back (U-turn configurations). |
Alternative Materials for Comparison
| Material Grade | Use Case | Temp Limit |
| A234 WP9 | High-temp steam, hydrogen service | Up to 600°C (1112°F) |
| A234 WPB | Low-temp water/oil (carbon steel) | Up to 350°C (662°F) |
| A403 WP316 | Corrosive fluids (stainless steel) | Up to 800°C (1472°F) |
The applications of ASTM A234 WP9-S 180 Degree Elbow SR:
1. Power Generation Plants
2. Oil & Gas Refineries
3. Petrochemical & Chemical Processing
4. High-Temperature Pipelines
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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