Wholesale Discount ASTM A519 5120 GB/T 3639 20cr DIN 20cr4 JIS G3445 SCR420 Cold Finished/Cold Drawn/Cold Rolled Precision Seamless Alloy Steel Pipe/Tube
Being supported by an advanced and specialist IT team, we could give technical support on pre-sales & after-sales services for Wholesale Discount ASTM A519 5120 GB/T 3639 20cr DIN 20cr4 JIS G3445 SCR420 Cold Finished/Cold Drawn/Cold Rolled Precision Seamless Alloy Steel Pipe/Tube, We welcome all with the clients and buddies to get in touch with us for mutual gains. Hope to do more enterprise with you.
Being supported by an advanced and specialist IT team, we could give technical support on pre-sales & after-sales services for China Carbon Steel Tube and Cold Drawn Steel Tube, After years’ creating and developing, with the advantages of trained qualified talents and rich marketing experience, outstanding achievements were gradually made. We get good reputation from the customers due to our good goods quality and fine after-sale service. We sincerely wish to create a more prosperous and flourishing future together with all the friends home and abroad!
JIS G3445 Precision steel tubes are mainly used in automobile and precision machinery parts for cars and cylinder. pressure use, and also for transporting steam, water, gas.
Heat treatment: (Please specify the delivery condition and heat treatment requirement when sending the enquiry.)
HR hot rolled
CW cold worked
SR stress relieved
A annealed
N normalized
HF hot formed
Delivery status: +A, +B, +C
Surface Treatment:
1.Bared
2.Black Painted (varnish coating)
3.Galvanized
4.Oiled
5.According to customers.
Applications: hydraulic system tube ; automobile tube; precision machinery parts for cars and cylinder tube.;Auto industry tube ;Oil cylinder tube.
Chemical Compositon
|
Grade |
Designation | Unit % | ||||||
| C | Si | Mn | P | S | Nb or V | |||
| Grade 11 | A | STKM 11A | 0.12 max. | 0.35 max. | 0.60 max. | 0.040 max. | 0.040 max. | - |
| Grade 12 | A | STKM 12A | 0.20 max. | 0.35 max. | 0.60 max. | 0.040 max. | 0.040 max. | - |
| B | STKM 12B | |||||||
| C | STKM 12C | |||||||
| Grade 13 | A | STKM 13A | 0.25 max. | 0.35 max. | 0.30~0.90 | 0.040 max. | 0.040 max. | - |
| B | STKM 13B | |||||||
| C | STKM 13C | |||||||
| Grade 14 | A | STKM 14A | 0.30 max. | 0.35 max. | 0.30~1.00 | 0.040 max. | 0.040 max. | - |
| B | STKM 14B | |||||||
| C | STKM 14C | |||||||
| Grade 15 | A | STKM 15A | 0.25~0.35 | 0.35 max. | 0.30~1.00 | 0.040 max. | 0.040 max. | - |
| C | STKM 15C | |||||||
| Grade 16 | A | STKM 16A | 0.35~0.45 | 0.40 max. | 0.40~1.00 | 0.040 max. | 0.040 max. | - |
| C | STKM 16C | |||||||
| Grade 17 | A | STKM 17A | 0.45~0.55 | 0.40 max. | 0.40~1.00 | 0.040 max. | 0.040 max. | - |
| C | STKM 17C | |||||||
| Grade 18 | A | STKM 18A | 0.18 max. | 0.55 max. | 1.50 max. | 0.040 max. | 0.040 max. | - |
| B | STKM 18B | |||||||
| C | STKM 18C | |||||||
| Grade 19 | A | STKM 19A | 0.25 max. | 0.55 max. | 1.50 max. | 0.040 max. | 0.040 max. | - |
| C | STKM 19C | |||||||
| Grade 20 | A | STKM 20A | 0.25 max. | 0.55 max. | 1.60 max. | 0.040 max. | 0.040 max. | 0.15 max. |
Other Sthandard Steel Tube
| Product Name | Standard | Grade | Size Range O.D. mm |
Usage |
| Seamless Cold Drawn Precision Tubes | JIS G3445 | STKM 11A, STKM 12A, STKM 12B, STKM 12C, STKM 13A, STKM 13B, STKM 13C, STKM 15A, STKM 15C, STKM 17A, STKM 17C, STKM 18A | 4.00 to 88.90 | Mechanical and Automobile Precision Tubes |
| DIN2391 | ST35, ST45, ST52 | 6.00 to 76.00 | Seamless Precision Tubes | |
| ASME/ ASTM SA/A519 | SAE1010,SAE1020,SAE1025,SAE1026,SAE1035,
SAE1045, SAE4130 |
6.00 to 340.00 | Mechanical Precision Tubes | |
| EN10305-1 | E215, E235, E335 | 6.00 to 340.00 | Hydraulic Pressure Equipment | |
| ISO8535-1 | ST35, ST37, ST52 | 6.00 to 16.00 | High Precision High Pressure Fuel Pipes |
