Specification:
Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service.
ASTM A333 standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure. Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements.
Size (mm) we can supply:
Hot-rolled: O.D.: 51-508; W.T.:7∼60; L: max 16000
Cold-drawn: O.D.: 10-50; W.T.:2∼10; L: max 16000
Hot-expanded:O.D.: 325-1020; W.T.:6∼50; L: max 12000 and other specifications in accordance with customer requirements.
Packing:
Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection
Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, Nodestructive Test, Hydrostatic Test.
Surface Treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating Painting as requested.
Mechanical properties:
Standard | Grade | Tensile Strength (MPa) | Yield Point (MPa) | Elongation (%) | |
Y | X | ||||
ASTM A333 | Grade 1 | ≥380 | ≥205 | ≥35 | ≥25 |
Grade 3 | ≥450 | ≥240 | ≥30 | ≥20 | |
Grade 4 | ≥415 | ≥240 | ≥30 | ≥16.5 | |
Grade 6 | ≥415 | ≥240 | ≥30 | ≥16.5 | |
Grade 7 | ≥450 | ≥240 | ≥30 | ≥22 | |
Grade 8 | ≥690 | ≥515 | ≥22 | ||
Grade 9 | ≥435 | ≥315 | ≥28 | ||
Grade 10 | ≥550 | ≥450 | ≥22 | ||
Grade 11 | ≥450 | ≥240 | ≥18 | ||
Chemical Composition (%) of ASTM A333 steel pipe
Standard | Grade | Chemical Composition (%) | ||||||||||
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V | Al | ||
ASTM A333 | Grade 1 | ≤0.30 | 0.40-1.06 | ≤0.025 | ≤0.025 | |||||||
Grade 3 | ≤0.19 | 0.18-0.37 | 0.31-0.64 | ≤0.025 | ≤0.025 | 3.18-3.82 | ||||||
Grade 4 | ≤0.12 | 0.18-0.37 | 0.50-1.05 | ≤0.025 | ≤0.025 | 0.44-1.01 | 0.47-0.98 | 0.40-0.75 | 0.04-0.30 | |||
Grade 6 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.025 | ≤0.025 | |||||||
Grade 7 | ≤0.19 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 2.03-2.57 | ||||||
Grade 8 | ≤0.13 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 8.40-9.60 | ||||||
Grade 9 | ≤0.20 | 0.40-1.06 | ≤0.025 | ≤0.025 | 1.60-2.24 | 0.75-1.25 | ||||||
Grade 10 | ≤0.20 | 0.10-0.35 | 1.15-1.50 | ≤0.03 | ≤0.015 | ≤0.15 | ≤0.25 | ≤0.015 | ≤0.50 | ≤0.12 | ≤0.06 | |
Grade 11 | ≤0.10 | ≤0.35 | ≤0.6 | ≤0.025 | ≤0.025 | ≤0.50 | 35.0-37.0 | ≤0.50 | ||||
Strike temperature condition:
Crade | The lowest temperature for strike test | |
℉ | ℃ | |
ASTM A333 Grade 1 | -50 | -45 |
ASTM A333 Grade 3 | -150 | -100 |
ASTM A333 Grade 4 | -150 | -100 |
ASTM A333 Grade 6 | -50 | -45 |
ASTM A333 Grade 7 | -100 | -75 |
ASTM A333 Grade 8 | -320 | -195 |
ASTM A333 Grade 9 | -100 | -75 |
ASTM A333 Grade 10 | -75 | -60 |
Ordering Information
Orders for material under this specification should include the following, as required, to describe the desired material adequately:
Quantity | Feet, meters, or number of lengths |
Name of material | Seamless Alloy Steel Pipe |
Grade | STANDARD AND STEEL GRADE |
Manufacture | Hot-finished or cold-drawn |
Size using one of the following: | |
NPS and Schedule Number | |
Outside Diameter and Nominal Wall Thickness | |
Length | Specific or Random |
End Finish | |
