Place of Origin: | China |
Brand Name: | Torich |
Certification: | ISO9001,ISO14001,TS16949 |
Model Number: | A333/A333M |
Minimum Order Quantity: | 5tons |
---|---|
Price: | Negotiation |
Packaging Details: | IN BUNDLES OR WOODEN BOX |
Delivery Time: | 30-60DAYS |
Payment Terms: | T/T L/C |
Supply Ability: | 50000 TONS PER YEAR |
A333/A333M Seamless and Welded Steel Pipe for Low-Temperature Service
Material:
Carbon and Alloy Steel, ferritic steel
Grade 1A, Grade3, Grade 4, Grade 6A, Grade 7A
Manufacture:
The pipes are made by seamless and welding process with the addition of no filler metal in the welding operation.
Grade 4 is manufactured by seamless process
Heat treatment:
All seamless and welded pipes, other than Grades 8 and 11, are heat treated to control their microstructure in accordance with methods of:
TABLE 1 Chemical Requirements
Element |
Composition,% |
||||
Grade 1A |
Grade 3 |
Grade 4 |
Grade 6A |
Grade 7A |
|
Carbon, max |
0.30 |
0.19 |
0.12 |
0.30 |
0.19 |
Manganese |
0.40-1.06 |
0.31-0.64 |
0.50-1.05 |
0.29-1.06 |
0.90max |
Phosphorus,max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
Sulfur,max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
Silicon |
… |
0.18-0.37 |
0.18-0.37 |
0.10min |
0.13-0.32 |
Nickel |
… |
3.18-3.82 |
0.47-0.98 |
… |
2.03-2.57 |
Chromium |
… |
… |
0.44-1.01 |
… |
… |
Copper |
… |
… |
0.40-0.75 |
… |
… |
Aluminum |
… |
… |
0.04-0.30 |
… |
… |
Vanadium,max |
… |
… |
… |
… |
… |
Columbium,max |
… |
… |
… |
… |
… |
Molybdenum,max |
… |
… |
… |
… |
… |
Cobalt |
… |
… |
… |
… |
… |
A For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be pemitted to a maximum of 1.35% manganese.
TABLE 2 Impact Temperature
Grade |
Minimum Impact Test Temperature |
|
°F |
°C |
|
1 |
-50 |
-45 |
3 |
-150 |
-100 |
4 |
-150 |
-100 |
6 |
-50 |
-45 |
7 |
-100 |
-75 |
8 |
-320 |
-195 |
9 |
-100 |
-75 |
10 |
-75 |
-60 |
11 |
-320 |
-195 |
Tests and Inspection:
Tensile Requirements
Impact Requirements
Mechanical Teing
- Sampling
- Transverse or Longitudinal Tensile Test and Flattening Test
- Hydrostatic Test
- Impact Test