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$1750.00
≥1 Ton
$1700.00
≥50 Ton
Model No. : | JIS G3445 |
---|---|
Brand Name : | Torich |
standard : | Gb,Astm,Jis,Din,Api |
Ningbo, Zhejiang, China
Descrizione del prodotto
Sistema di scarico automatico STKM11A Welded Acciaio tubo
1.Details:
application |
Automobile and motorcycle Shock Absorber Pipe Hydraulic-cylinder Pipe Mechanical steel pipes for auto and motor parts Gas Spring pipe motor casing pipe |
size |
length--2~12m WT--2~5mm OD--10-20mm |
material | STKM11A |
Production process | ordinary high-frequency welded pipe |
Advantages | small diameter and thick wall |
Surface Quality | The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation |
Inspection items |
chemical composition Tensile test Ultrasonic examination Eddy current flaw detection Bending test Flattening test |
2.P Tolleranza ermissibile del diametro esterno e dello spessore della parete (mm)
Type of steel Tube | Dimension of steel tube | Permissible tolerance | ||
Average class | High class | |||
Hot-rolled (extruded and expanded) tube |
Outer diameter D | All |
±1% (min.+/-0.50) |
- |
Wall thickness | All |
+15%/-12.5% (min.+4.5/-4.0) |
- | |
Cold-drawn (cold-rolled) tube | Outer diameter D | 6~10 | ±0.2 | ±0.15 |
>10~30 | ±0.40 | ±0.20 | ||
>30~50 | ±0.45 | ±0.30 | ||
>50 | ±1% | ±0.8% | ||
Wall thickness | <1 | ±0.15 | ±0.12 | |
>1~3 |
+15% -10% |
+12.5% -10% |
||
>3 |
+12.5% -10% |
±10% | ||
Note: For hot-expanded tubes with outer diameter>35mm,the permissible tolerance of wall thickness is±18%. |
3. Proprietà meccaniche longitudinali dei tubi in acciaio
NO. | Steel Grade | Tensile Strength(Mpa) | Yield point(Mpa) | Elongation after breaking(%) | |
s<16 | s>16 | ||||
Not less than | |||||
1 | 10 | 335~475 | 205 | 195 | 24 |
2 | 20 | 410~550 | 245 | 235 | 20 |
3 | Q295 | 430~610 | 295 | 285 | 22 |
4 | Q345 | 490~665 | 325 | 315 | 21 |
4.p deviazioni ermissi dell'analisi del prodotto dai limiti specificati:
Element | Limiting values for cast analysis | Permissible deviatioon of the product analysis in % by mass |
C | ≤0.22 | +0.02 |
Si | ≤0.55 | +0.05 |
Mn | ≤1.60 | +0.10 |
P | ≤0.025 | +0.005 |
S | ≤0.015 | +0.003 |
Al | ≥0.025 | -0.005 |
5. Showing:
Ningbo, Zhejiang, China
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