Heat Treatment Seamless Carbon Steel Tube Pipe A333 Grade 4 For Boiler Construction
ASTM A33 Grade 4 seamless carbon and alloy steel pipe intended for use at low temperatures.
ASMT A333 Grade 4 seamless 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.
1. Standards:
ASTM A333: Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service
2. Application:
Oil, Gas and water delivery;
Refinery, Boiler and Mechanical equipment manufacture;
structure construction; drilling, ship building and etc.
3. Ordering Information
Quantity (feet, centimeters, or number of lengths),
Name of material (seamless pipe),
Grade (Gr. 4),
Size (NPS or outside diameter and schedule number of average wall thickness),
Lengths (specific or random),
End finish
Optional requirements
Test report required
4. Chemical Requirements
| Chemical Composition % Gr. 4 |
| C max | Mn | P max | S max | Si | Ni | Cr | Cu | Al | V max | Cb max |
| 0.12 | 0.50-1.05 | 0.025 | 0.025 | 0.08-0.37 | 0.47-0.98 | 0.44-1.01 | 0.40-0.75 | 0.04-0.30 | … | … |
5. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing & Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE → Visual & Dimension Inspection → Marking → Storing & Shipping
6. Mechanical Properties
Tensile Strength, min: 60ksi/415MPa
Yield Strength, min: 35ksi/240MPa
7. 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. |
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