A333 Seamless & Welded Steel Pipe

ASTM A333 is the standard specification for seamless and welded carbon and alloy steel pipe for low temperature applications or other applications requiring notch toughness. This standard covers several grades of ferritic steel: Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10 and Grade 11.

Category:
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 Grade1 Grade3 Grade4 Grade6 Grade7 Grade8 Grade9 Grade10 Grade11
C 0.3 0.19 0.12 0.3 0.19 0.13 0.2 0.2 0.1
Mn 0.40-1.06 0.31-0.64 0.50-1.05 0.29-1.06 0.9 0.9 0.40-1.06 1.15-1.50 0.6
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 0.4 2.03-2.57 8.40-9.60 1.60-2.24 0.25 35.0-37.0
Cr – – 0.44-1.01 0.3 – – – 0.15 0.5
Cu – – 0.40-0.75 0.4 – – 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
Grade1 55 000 380 30 000 205 35 25
Grade3 65 000 450 35 000 240 30 20
Grade4 60 000 415 35 000 240 30 16.5
Grade6 60 000 415 35 000 240 30 16.5
Grade7 65 000 450 35 000 240 30 22
Grade8 100 000 690 75 000 515 22 –
Grade9 63 000 435 46 000 315 28 –
Grade10 80 000 550 65 000 450 22 –
Grade11 65 000 450 35 000 240 18 –

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