A333 Seamless & Welded Steel Pipe Description
The main components of A333 seamless steel pipe include iron, carbon, chromium, nickel, manganese and other elements. Chromium has excellent corrosion resistance, while the addition of nickel further enhances the corrosion resistance and toughness of the material. A333 seamless steel pipe has high strength and hardness, as well as good plasticity and toughness. These excellent mechanical properties make A333 seamless steel pipe an ideal choice in many high-strength, high-corrosion-resistant application scenarios. A333 seamless steel pipe is commonly used to transport oil and natural gas with high temperature and high pressure owing to the excellent sealing and corrosion resistance.
Product Parameters
| Product Name | A333 Seamless & Welded Steel Pipe | |
| Standard | EN/DIN/JIS/ASTM/BS/ASME/AISI etc. | |
| Outer Diameter | Seamless: 1/4″-36″ | Welding: 21.3mm-3620mm |
| Round Tube: 1/2″-10″ | Square Tube/Rectangular Tube: 15x15mm-400x600mm | |
| Wall Thickness | Seamless: 1.25mm-50mm | Welding: 1.65mm-65mm |
| Length | 3-12 meters, Support customization | |
| Surface Process | Bright, Polished, Black | |
| Other Services | Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. | |
Chemical Composition
| A333 | Grade 1 | Grade 3 | Grade 4 | Grade 6 | Grade 7 | Grade 8 | Grade 9 | Grade 10 | Grade 11 |
| C | 0.30 | 0.19 | 0.12 | 0.30 | 0.19 | 0.13 | 0.20 | 0.20 | 0.10 |
| Mn | 0.40-1.06 | 0.31-0.64 | 0.50-1.05 | 0.29-1.06 | 0.90 | 0.90 | 0.40-1.06 | 1.15-1.50 | 0.60 |
| P | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.035 | 0.025 |
| S | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.015 | 0.025 |
| Si | – | 0.18-0.37 | 0.08-0.37 | 0.10 min | 0.13-0.32 | 0.13-0.32 | – | 0.10-0.35 | 0.35 |
| Ni | – | 3.18-3.82 | 0.47-0.98 | 0.40 | 2.03-2.57 | 8.40-9.60 | 1.60-2.24 | 0.25 | 35.0-37.0 |
| Cr | – | – | 0.44-1.01 | 0.30 | – | – | – | 0.15 | 0.50 |
| Cu | – | – | 0.40-0.75 | 0.40 | – | – | 0.75-1.25 | 0.15 | – |
| Al | – | – | 0.04-0.30 | – | – | – | – | 0.06 | – |
Mechanical Properties
| A333 | Tensile Strength min. | Yield Strength min. | Elongation % min. | |||
| Grade | psi | MPa | psi | MPa | Vertical | Transverse |
| Grade 1 | 55000 | 380 | 30000 | 205 | 35 | 25 |
| Grade 3 | 65000 | 450 | 35000 | 240 | 30 | 20 |
| Grade 4 | 60000 | 415 | 35000 | 240 | 30 | 16.5 |
| Grade 6 | 60000 | 415 | 35000 | 240 | 30 | 16.5 |
| Grade 7 | 65000 | 450 | 35000 | 240 | 30 | 22 |
| Grade 8 | 100000 | 690 | 75000 | 515 | 22 | – |
| Grade 9 | 63000 | 435 | 46000 | 315 | 28 | – |
| Grade 10 | 80000 | 550 | 65000 | 450 | 22 | – |
| Grade 11 | 65000 | 450 | 35000 | 240 | 18 | – |
Scope of Application
Seamless and welded steel pipes for low temperature service and other applications with the required notch toughness.
