Yuhong Group Co.,Ltd
| Specification | ASTM A234, ASME SA234 |
| W.T. | Schedule 10s - Schedule XXS |
| Packaging Details | Plwood case or Pallet |
| O.D. | 1/8”NB to 48”NB |
| Delivery Time | 7 DAYS |
| Material | WP22 |
| Payment Terms | L/C, T/T |
| Type | 180 degree |
| Material Class | Class 1, Class 3 |
| Product Name | Alloy Steel Elbow |
| High Light | ASTM A234 WP22 180 Degree Elbow, Alloy Steel Buttweld Pipe Fittings |
| Brand Name | YUHONG |
| Place of Origin | CHINA |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Model Number | ASTM A234 WP22 Alloy Steel 180 Degree Elbow |
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Product Specification
| Specification | ASTM A234, ASME SA234 | W.T. | Schedule 10s - Schedule XXS |
| Packaging Details | Plwood case or Pallet | O.D. | 1/8”NB to 48”NB |
| Delivery Time | 7 DAYS | Material | WP22 |
| Payment Terms | L/C, T/T | Type | 180 degree |
| Material Class | Class 1, Class 3 | Product Name | Alloy Steel Elbow |
| High Light | ASTM A234 WP22 180 Degree Elbow, Alloy Steel Buttweld Pipe Fittings | Brand Name | YUHONG |
| Place of Origin | CHINA | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Model Number | ASTM A234 WP22 Alloy Steel 180 Degree Elbow | ||
| High Light | ASTM A234 WP22 alloy steel elbow ，black painted buttweld fitting ，180 degree steel pipe elbow | ||
ASME B16.9 Buttweld Pipe Fitting ASTM A234 WP22 CL1 / CL3 180 Degree Alloy Steel Elbow
A factory-made, 180-degree return bend (U-bend) pipe fitting manufactured from 2.25% chromium – 1% molybdenum alloy steel per ASTM A234 Grade WP22, supplied in either Class 1 (standard heat treatment) or Class 3 (impact tested) condition, with butt-weld end connections conforming to ASME B16.9, and finished with a temporary black shop primer coating for corrosion protection during transit and storage.
Why 180° elbow? To save space vs. two 90° elbows + straight pipe. Also lower pressure drop than a cast return bend.
Chemical Composition % of ASTM A234 WP22 Alloy Steel 180Deg. Elbow Buttweld Pipe Fitting
| Grade | C | Mn | Si | S | P | Cr | Mo |
| ASTM A234 WP22 Fittings | 0.05-0.15 | 0.3-0.6 | 0.5 | ≤0.04 | ≤0.04 | 1.9-2.6 | 0.87-1.13 |
Mechanical Property of ASTM A234 WP22 Alloy Steel 180Deg. Elbow Buttweld Pipe Fitting
The Differences between CL1 and CL3 under ASTM A234, reflecting on its heat treatment and strength.
| Property | Class 1 | Class 3 |
|---|---|---|
| Tensile Strength (MPa) | 415–585 | 515–690 |
| Yield Strength (MPa) | 205 min | 310 min |
| Elongation (%) | 20 min | 20 min |
| Hardness (HB) | ~197 max | ~235 max |
Specification of ASTM A234 WP22 Alloy Steel 180Deg. Elbow Buttweld Pipe Fitting
| Specifications | ASTM A234 / ASME SA234 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Material Class | Class 1, Class 3 |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
Coating: Black Painted
Purpose: Temporary in-transit corrosion protection. It is NOT a final corrosion barrier.
Why Paint? WP22 alloy steel will rust if exposed to moisture. The black paint (usually an alkyd or epoxy shop primer) protects during storage and shipping.
Crucial Instruction: You must remove the black paint from the weld bevel and 1-2 inches of the adjacent pipe surface before welding. Painting on Cr-Mo steel can cause hydrogen cracking in the heat-affected zone (HAZ) if not removed.
Final Coating: After welding and post-weld heat treatment (PWHT), the elbow will likely require high-temperature paint or insulation.
Applications
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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