GB/T 3093 TORICH High Pressure Seamless Steel Tubes for Diesel Engine
GB/T 3093 TORICH High Pressure Seamless Steel Tubes for Diesel Engine
Spec:
Material:10A 20A Q345A
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:1.5-6m
Tolerance:
According to the following tables or customers’ request.
Characteristic:Technical Requirements
Chemical component:
| Name
| Grade | Chemical component(mass fraction )% | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | ||
| Max | |||||||||
| U20103 | 10A | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.03 | 0.03 | 0.15 | 0.30 | 0.20 |
| U20203 | 20A | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.03 | 0.03 | 0.25 | 0.30 | 0.20 |
| L03451 | Q345A | 0.20Max | 0.55Max | 1.00-1.60 | 0.03 | 0.30 | 0.30 | 0.30 | 0.20 |
Mechanical Properties:
| Grade | Tensile strength /Mpa | Yeild strength/Mpa | Elongation/% |
| Max | |||
| 10A | 335-470 | 205 | 30 |
| 20A | 390-540 | 245 | 25 |
| Q345A | 470-630 | 345 | 22 |
Producing Method:cold drawn
Technical Delivery Conditions:Cold drawn + Heat treatment
Widely used in the field of/Application:Diesel engine
Product Images:
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.
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