ASTM A333 Grade 7 Standard covers seamless and welded steel pipe for low temperature service. The ASTM A333 Grade 7 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 7 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
ASTM A333 Grade 7 covers seamless and welded steel pipe for low temperature service. The Grade 7 alloy steel involved is similar to AISI 4032 low alloy steel.
Seamless and Welded Steel Pipe size for Low-Temperature Service:
Outer Dimensions: 19.05mm – 114.3mm
Wall Thickness: 2.0mm – 14 mm
Length: max 16000mm
Application: Seamless and Welded Steel Pipe for Low-Temperature Service.
Steel grade: ASTM A333 Grade 7, ASME SA333 Gr.7
Packing:Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.ASTM A333 Grade 7 Chemical Compositions(%)
| Compositions | Data |
| Carbon(max.) | 0.19 |
| Manganese | 0.9 |
| Phosphorus(max.) | 0.025 |
| Sulfur(max.) | 0.025 |
| Silicon | 0.13-0.32 |
| Nickel | 2.03-2.57 |
| Chromium | … |
| Other Elements | … |
| Properties | Data |
| Tensile strength, min, (MPa) | 450Mpa |
| Yield strength, min, (MPa) | 240 Mpa |
| Elongation, min, (%), L/T | 30/16.5 |
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