High Quality ASTM A53 A106 API5l Precision /Alloy / Cold Drawn /Hot Rolled Gr a Gr B Schedule 40 Black Pipe Seamless Steel Tube Precision Tube
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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 |
