Oil Gas Delivery Seamless ASTM Carbon Steel Pipe For Low
Temperature Service
1. Referenced Documents:
ASTM A 370 Test Methods and Definitions for Mechanical testing of
Steel Products
ASTM A999/A 999M Specification for General requirements for Alloy
and Stainless Steel Pipe
ASTM A 671 Specification for General requirements for Alloy and
Stainless Steel Pipe
ASTM E 23 Test Methods for Notched bar Impact testing of Metallic
Materials
2. Standards:
ASTM A333: Standard Specification for Seamless and Welded Steel
Pipe for Low-Temperature Service
3. 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. |
4. Application:
Oil, Gas and water delivery;
Refinery, Boiler and Mechanical equipment manufacture;
structure construction; drilling, ship building and etc.
5. Ordering Information
Quantity (feet, centimeters, or number of lengths),
Name of material (seamless pipe),
Grade (Gr.1, Gr.3, Gr.4, Gr.6, Gr.7, Gr.8, Gr.9, and Gr.10),
Size (NPS or outside diameter and schedule number of average wall
thickness),
Lengths (specific or random),
End finish
Optional requirements
Test report required
6. Chemical Requirements
| Chemical Requirements |
| Element | Composition, % |
| Grade 1 | Grade 3 | Grade 4 | Grade 6 | Grade 7 | Grade 8 | Grade 9 | Grade 10 |
| Carbon (C) max | 0.3 | 0.19 | 0.12 | 0.3 | 0.19 | 0.13 | 0.2 | 0.2 |
| Manganese (Mn) | 0.40-1.06 | 0.31-0.64 | 0.50-1.05 | 0.29-1.06 | 0.90 max | 0.90 max | 0.40-1.06 | 1.15-1.50 |
| Phosphorus (P) max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.035 |
| Sulfur (S) max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.015 |
| Silicon (Si) | … | 0.18-0.37 | 0.08-0.37 | 0.10 min | 0.13-0.32 | 0.13-0.32 | … | 0.10-0.35 |
| Nickel (Ni) | … | 0.47-0.98 | 0.47-0.98 | … | 2.03-2.57 | 8.40-9.60 | 1.60-2.24 | 0.25 max |
| Chromium (Cr) | … | 0.44-1.01 | 0.44-1.01 | … | … | … | … | 0.15 max |
| Copper (Cu) | … | 0.40-0.75 | 0.40-0.75 | … | … | … | 0.75-1.25 | 0.15 max |
| Aluminum (Al) | … | 0.04-0.30 | 0.04-0.30 | … | … | … | … | 0.06 max |
| Vanadium (V) max | … | … | … | … | … | … | … | 0.12 |
| Columbium (Cb)max | … | … | … | … | … | … | … | 0.05 |
| Molybdenum (Mo) max | … | … | … | … | … | … | … | 0.05 |
| Cobalt (Co) | … | … | … | … | … | … | … | … |
7. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing &
Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE →
Visual & Dimension Inspection → Marking → Storing & Shipping
8. Mechanical Properties
| Tensile Strength, min: | Gr. 1 | Gr. 3 | Gr. 4 | Gr. 6 | Gr. 7 | Gr. 8 | Gr. 9 | Gr. 10 |
| ksi | 55 | 65 | 60 | 60 | 65 | 100 | 63 | 80 |
| Mpa | 380 | 450 | 415 | 415 | 450 | 690 | 435 | 550 |
| Yield Strength, min: | | | | | | | | |
| ksi | 30 | 35 | 35 | 35 | 35 | 75 | 46 | 65 |
| MPa | 205 | 240 | 240 | 240 | 240 | 515 | 315 | 450 |
