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| Categories | Automotive Steel Tubes |
|---|---|
| Brand Name: | TORICH |
| Model Number: | JIS 3445 |
| Certification: | ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 ABS DNV |
| Place of Origin: | China |
| MOQ: | 1 ton |
| Price: | USD 1650-1750 per ton |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 60000 Tons per year |
| Delivery Time: | 35-45 days |
| Packaging Details: | In hex bundles with woven bags by sea |
| Product name: | STKM11A Automotive Welded Steel Tube Cold Drawn for Auto Exhaust System |
| steel grade: | STKM11A, STKM 12C, STKM 13A, STKM11C |
| Surface: | Oiled to prevent rust |
| Usage: | Auto Exhaust System, |
| Shape: | Round |
| Type: | Welded |
| Length: | 2-12m |
| WT: | 2-5mm |
| OD: | 10-50mm |
| Company Info. |
| TORICH INTERNATIONAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
STKM11A Automotive Welded Steel Tube Cold Drawn for Auto Exhaust System
| 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 |
Permissible Tolerance of Outer Diameter and Wall Thickness (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%. | ||||
Longitudinal Mechanical Properties of Steel Tubes
| 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 |
Permissible deviations of the product analysis from the specified limits
| 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 |
What is your Guarantee?
1.SO9001:2008 and TS16949 certification, SGS, BV, TUV or other
third party inspection is available.
2.High quality with competitive price.
3.Advanced technology, experienced engineer, ISO quality system for
quality assurance and traceability.
Do you have agent or distributor in our country?
1.We are recruiting area agent and distributor all over the world,
welcome to send us your mail or call us for detail discussion.
How is your production capability?
1.2000 tons monthly production capacity, 5000 tons monthly trading
capability
2.Prompt and Timely shipment
How to get the sample?
1.You are requested to pay for sample charges and courier charges
from China to your country; and the free sample is according the
product like size, steel grade and quantity, please consult our
sales for details
2.Sample charges will be refunded when order is placed.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users,
etc
How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays.
Quotations would be sent upon technical details confirmed by
customer!
Any more questions about your doubts, please feel free to send us your emails or call!
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