ERW Precision Tubes JIS G3445 STKM 11A STKM 12A Automotive Parts Steel Pipe
TORICH has 20 years' expereince in precision steel tube steel making for automotive industry, hydraulic parts, mechanical structure, etc.
1.Introduction of ERW precision tubes for JIS G3445:
Od:5-420mm
Wt:10-50mm
Length: Max12000mm
Grade:STKM 12A, STKM 11A, STKM13A,STKM 14A,etc
Type:Carbon
Production method:Seamless, ERW, butt welded
Feature: High Dimensional Accuracy, Less Surface Decarburization, High pressure, Oiled in the surface to prevent rust.
Application: Automotive industry
2.Chemical components:
| Material | C max | Si max | Mn max | P max | S |
| STKM11A | 0.12 | 0.35 | 0.6 | 0.04 | 0.04 |
| STKM12A | 0.2 | 0.35 | 0.6 | 0.04 | 0.04 |
| STKM12C | 0.2 | 0.35 | 0.6 | 0.04 | 0.04 |
| STKM13A | 0.25 | 0.35 | 0.3-0.9 | 0.04 | 0.04 |
| STKM14A | 0.3 | 0.35 | 0.3-1 | 0.04 | 0.04 |
3.Mechanical properties:
| Material | Tensile Strength (min) MPa | Yield Strength MPa | Elongation % |
| STKM11A | 290 | -- | 35/30 |
| STKM12A | 340 | 175 | 35/30 |
| STKM12C | 470 | 355 | 20/15 |
| STKM13A | 370 | 215 | 30/25 |
| STKM14A | 410 | 245 | 25/20 |
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
4.Product display:
5.Packing method:
Q&A
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
Q:Do you have agent or distributor in our country?
A:We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.
Q:How is your production capability?
A:1.2000 tons monthly production capacity, 5000 tons monthly trading capability
2.Prompt and Timely shipment
Q:How to get the sample?
A: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.
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ERW Precision Tubes JIS G3445 STKM 11A STKM 12A Automotive Parts Steel Pipe Images
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