Carbon steel elbow production process
2 week ago
WPB, WP1, WP12, WP9 Carbon Steel Fitting
Material
WPB, WP1, WP12, and WP9 carbon steel fittings are manufactured from high-quality carbon and low-alloy steels, designed for high-pressure and high-temperature piping systems. These fittings are widely used in oil & gas, petrochemical, power generation, and industrial piping networks.
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WPB: Standard carbon steel for moderate temperature and pressure.
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WP1: Low-alloy steel with chromium-molybdenum for high-temperature service.
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WP12: Low-alloy steel with higher chromium-molybdenum content for high-temperature and pressure applications.
- WP9: Chromium-molybdenum steel for severe high-temperature applications.
Specification
| Standard | ASTM A234 |
| Grades | WPB WPC WP1 WP12 WP11 WP22 WP5 WP9 WPR WP91 |
| Form | Elbows 90°/45° |
| Surface Finish | Painted, black, or pickled and oiled |
| Outer Diameter | 1/2” – 48” OD (customizable) |
| Wall Thickness | As per schedule (SCH 10–160, STD, XS, XXS) |
| Connection | Butt-welded or socket-welded |
Key Features
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High strength and durability under pressure and temperature
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Excellent performance in steam, water, and oil pipelines
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Wide range of angles, sizes, and types for flexible piping design
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Easy to fabricate, weld, and install
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Long service life with reduced maintenance costs
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Conforms to international standards for safety and reliability
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Fe |
| WPB | 0.35 max | 1.06 | 0.60 | 0.035 max | 0.035 max | – | – | Balance |
| WP1 | 0.10–0.20 | 0.30–0.60 | 0.30–0.50 | 0.035 max | 0.035 max | 1.25 | 0.50 | Balance |
| WP12 | 0.10–0.20 | 0.30–0.60 | 0.30–0.50 | 0.035 max | 0.035 max | 1.25 | 0.50 | Balance |
| WP9 | 0.10–0.20 | 0.30–0.60 | 0.30–0.50 | 0.035 max | 0.035 max | 0.90 | 0.25 | Balance |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| WPB | 485–620 | ≥ 205 | ≥ 20 | 120–200 |
| WP1 | 415–550 | ≥ 205 | ≥ 20 | 120–200 |
| WP12 | 415–550 | ≥ 205 | ≥ 20 | 120–200 |
| WP9 | 415–550 | ≥ 205 | ≥ 20 | 120–200 |
Steel Grade
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ASTM A234 WPB
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ASTM A234 WP1
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ASTM A234 WP12
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ASTM A234 WP9
Application
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Oil & Gas: High-pressure pipelines, steam, and hydrocarbon transport
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Power Plants: Boiler and superheater piping, steam lines
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Petrochemical & Chemical Plants: Process piping handling corrosive fluids
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Water Treatment & Municipal Infrastructure: High-pressure water lines
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Construction & Industrial: Structural and industrial piping projects
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Marine & Offshore: High-temperature and high-pressure marine piping systems
Possible Alternative Grades
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Stainless Steel Fittings (304, 316, 316L): For high corrosion resistance
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Alloy Steel Fittings (WP11, WP22, WP91, WP91H): For higher temperature and pressure
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Duplex Stainless Steel: Higher strength and resistance to chloride-induced stress corrosion
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Low-Alloy Carbon Steel (e.g., ASTM A860): For specific industrial or boiler applications
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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Main Product:
Seamless Steel Tubes,
Welded Precision Steel Pipes,
Automotive Steel Tubes,
Carbon steel tubes,
Stainless Steel Tubes ,
Special Shaped Steel Tubes
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