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| Brand Name: | Torich |
| Model Number: | A333/A333M |
| MOQ: | 5MT |
| Price: | USD800-1100per ton |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 6000MT/Month |
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
Reference Documents:
ASTM A370 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 A671 Specification for Electric-Fusion-Welded Steel Pipe for Atmosphere and Low Tempearature
E 23 Test Methods for Notched Bar Impact Testing of Metallic Materials
