Grade 7 Seamless Carbon Steel Pipe , Thin Wall Steel Tubing Random
/ Fixed Length
ASTM A333 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.
1. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed
above, please contact us for further information. |
2. Ordering Information
Quantity (feet, centimeters, or number of lengths),
Name of material (seamless pipe),
Grade (Gr.7),
Size (NPS or outside diameter and schedule number of average wall
thickness),
Lengths (specific or random),
End finish
Optional requirements
Test report required
3. Standards:
ASTM A333: Standard Specification for Seamless and Welded Steel
Pipe for Low-Temperature Service
4. Application:
Oil, Gas and water delivery;
Refinery, Boiler and Mechanical equipment manufacture;
structure construction; drilling, ship building and etc.
5. Chemical Requirements
| Chemical Composition % Gr. 7 |
| Carbon (C) max | Manganese (Mn) | Phosphorus (P) max | Sulfur (S) max | Silicon (Si) | Nickel (Ni) | Chromium (Cr) | Copper (Cu) | Aluminum (Al) | Vanadium (V) max |
| 0.19 | 0.90 max | 0.025 | 0.025 | 0.13-0.32 | 2.03-2.57 | … | … | … | … |
6. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing &
Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE →
Visual & Dimension Inspection → Marking → Storing & Shipping
7. Mechanical Properties
Tensile Strength, min: 65ksi/450MPa
Yield Strength, min: 35ksi/240MPa
