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$1750.00
≥1 Ton
$1700.00
≥50 Ton
Model No. : | JIS G3445 |
---|---|
Brand Name : | ليغتني |
standard : | Gb,Astm,Jis,Din,Api |
Ningbo, Zhejiang, China
وصف المنتج
نظام العادم التلقائي STKM11A أنبوب فولاذ ملحوم
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 تسامح ermissible للقطر الخارجي وسمك الجدار (مم)
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. الخواص الميكانيكية الضوئية للأنابيب الفولاذية
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 انحرافات ermissible لتحليل المنتج من الحدود المحددة:
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. الاشتراك:
Ningbo, Zhejiang, China
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