Active Member
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[China]
Address: Daqiao Developing Zone Haiyan,Zhejiang Province,China
Contact name:Richard
Torich International Limited |
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Torich SGS BV 1020 1035 1045 High tolerance seamless steel tubes /pipes for automotive components
Production Standard:
GB/T3639,ASTM A519,DIN2391,EN10305-1,EN10305-1,Customer's special requirement will be upon discussion
Size:
O.D. 6-121mm
W.T.0.8-18mm
Material:
10,20,35,45,4130,4140,St52,45 E355 etc.
Grade and Chemical Composition ( ％ )
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| 1008 | ≤ 0.10 | 0.30-0.50 | 0.040 | 0.050 | - | - | - |
| 1010 | 0.08-0.13 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
| 1018 | 0.15-0.20 | 0.60-0.90 | 0.040 | 0.050 | - | - | - |
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
| 1025 | 0.22-0.28 | 0.30-0.60 | 0.040 | 0.050 | - | - | - |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.040 | 0.050 | - | - | - |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Delivery condition:
Cold drawn/hard +C
Cold drawn/soft+LC
Cold drawn and stress released:+SR
Normalizing:+N
Annealed:+A
Mechanical properties
| Grade | Condition | Tensile Point (Mpa) | Yield Point (Mpa) | Elongation |
| 1020 | CW | ≥ 414 | ≥ 483 | ≥ 5% |
| SR | ≥ 345 | ≥ 448 | ≥ 10% | |
| A | ≥ 193 | ≥ 331 | ≥ 30% | |
| N | ≥ 234 | ≥ 379 | ≥ 22% | |
| 1025 | CW | ≥ 448 | ≥ 517 | ≥ 5% |
| SR | ≥ 379 | ≥ 483 | ≥ 8% | |
| A | ≥ 207 | ≥ 365 | ≥ 25% | |
| N | ≥ 248 | ≥ 379 | ≥ 22% | |
| 4130 | SR | ≥ 586 | ≥ 724 | ≥ 10% |
| A | ≥ 379 | ≥ 517 | ≥ 30% | |
| N | ≥ 414 | ≥ 621 | ≥ 20% | |
| 4140 | SR | ≥ 689 | ≥ 855 | ≥ 10% |
| A | ≥ 414 | ≥ 552 | ≥ 25% | |
| N | ≥ 621 | ≥ 855 | ≥ 20% |
QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring
Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield
Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking
100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a
perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate
longitudinal and transversal defects.
