seamless steel tube price for auto mobile and motorcycle shock absorber steel tubes
Product Description
DIN high precision cold-rolled seamless steel tube
Synopsis of Craft: quality carbon steel-cold rolled-heat treatment without oxidization (NBK Status)-nondestrutive testing.
In the wall honing and inside flushing under the high pressure.Antirust oiling outside surface-plastic capping on both ends.
Main Features:High precision, excellent brightness, no oxidization on the outer and inner walls after heat treatments, high cleanness of inside wall. The steel tube is able to withstand high pressure. No deformation after cold bending,no crack after flaring and flattening. The complicated geometrical forming and machining can be realized.
Color of tube: Gray with white.
Main Application: To be used in hydraulic system,automobile and in the occasion where the high precision, brightness,cleanness and mechanical properties of the tube are required.
| Production Stanards | Exechtjve Standard | Producing Range | Steel Grade |
| Seamless Steel Tube for Liquid Transporting | GB/T 8163-1999 | Φ10-65 * 1-6 | 10#,20#,35#,45#,16Mn |
| Seamless steel tubne for Elevated Temperatiure | EN10305-1/4 | Φ10-65 * 1-6 | E215,E235,E355 |
| Cold Drawn and Cold Rolled Seamless Precision Tube | DIN2391 | Φ10-65 * 1-6 | ST35,ST37.4,ST45,ST52.4 |
Chemical composition comparison Sheet:
| Steel Grade | C | Si | Mn | S | P | Cr | Ni | Cu |
| 10 | 0.08-0.13 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.25 | ≤0.25 |
| 1010 | 0.08-0.13 | 0.15-0.35 | 0.30-0.60 | ≤0.050 | ≤0.040 | ≤0.20 | ≤0.25 | ≤0.25 |
| STKM11A | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 | |||
| S10C | 0.08-0.13 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.20 | ≤0.30 |
| DC011.0330 | ≤0.12 | ≤0.60 | ≤0.045 | ≤0.045 | ||||
| C10C1.0214 | 0.08-0.12 | ≤0.10 | 0.30-0.50 | ≤0.025 | ≤0.025 | AL0.020~0.060 | ||
| Гост10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.040 | ≤0.15 | ||
| A106 Gr.A | ≤0.25 | ≤0.10 | 0.27-0.93 | ≤0.035 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.40 |
| St37 | ≤0.17 | 0.17-0.37 | 0.35-0.65 | ≤0.020 | ≤0.025 | ≤0.25 | ≤0.25 | ≤0.20 |
| St35 | ≤0.17 | ≤0.35 | ≤0.40 | ≤0.025 | ≤0.025 | |||
| E215 | ≤0.10 | ≤0.05 | 0.7 | ≤0.025 | ≤0.025 | |||
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | |
| STKM12A | ≤0.20 | ≤0.35 | ≤0.60 | ≤0.20 | ≤0.040 | ≤0.040 | ||
| STKM12B | ||||||||
| STKM12C | ||||||||
| STKM13A | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.20 | ≤0.040 | ≤0.040 | ||
| STKM13B | ||||||||
| STKM13C | ||||||||
| 1020 | 0.18-0.23 | 0.30-0.60 | ≤0.050 | ≤0.040 | ||||
| S20C | 0.18-0.23 | 0.15-0.35 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.20 | ≤0.20 | ≤0.20 |
| C22 1.0402 | 0.17-0.24 | ≤0.40 | 0.40-0.70 | ≤0.045 | ≤0.045 | ≤0.40 | ≤0.40 | |
| C20C 1.0411 | 0.18-0.22 | ≤0.10 | 0.7-0.9 | ≤0.025 | ≤0.025 | |||
| Гост 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.040 | ≤0.025 | ≤0.030 | ≤0.030 |
| A106Gr.B | ≤0.25 | ≤0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.40 |
| A53.B | ≤0.30 | ≤1.2 | ≤0.045 | ≤0.05 | ≤0.40 | ≤0.40 | ||
| St45 | ≤0.21 | ≤0.35 | ≥0.40 | ≤0.025 | ≤0.025 | |||
| E235 | 0.17-0.22 | ≤0.35 | ≤0.40 | ≤0.025 | ≤0.025 | |||
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 |
| 1045 | 0.43-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.045 | ≤0.045 | ≤0.40 | ≤0.40 | ≤0.10 |
| C45 1.0503 | 0.42-0.50 | ≤0.40 | 0.50-0.80 | ≤0.045 | ≤0.045 | ≤0.40 | ≤0.40 | ≤0.10 |
| Гос т 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.040 | ≤0.25 | ≤0.30 | ≤0.30 |
| CK45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.020 | ≤0.025 | ≤0.25 | ≤0.25 | ≤0.20 |
Mechanical properties of the table:
| Steel Grade | Tensile Strength | Yield strength | Elongation | Hardness （BK) | ||||
| Mpa | Mpa | % | HB | |||||
| 1010 | ≥335 | ≥205 | ≥31 | ≤137 | ||||
| STKM 11A | ≥295 | / | ≥35 | |||||
| S10C | ≥335 | ≥205 | ≥31 | ≤137 | ||||
| A106 Gr.A | ≥330 | ≥205 | ≥35 | |||||
| St35.8 | ≥360 | ≥235 | ≥25 | |||||
| St37 | ≥335 | ≥205 | ≥31 | |||||
| St35 | ≥420 | ≥315 | ≥8 | |||||
| E215 | ≥430 | ≥8 | ||||||
| A53.B | ≥415 | ≥240 | ≥20 | |||||
| 20# | ≥410 | ≥245 | ≥25 | ≤156 | ||||
| E235 | ≥480 | ≥235 | ≥25 | |||||
| 1020 | ≥410 | ≥245 | ≥25 | ≤156 | ||||
| A106 Gr.B | ≥415 | ≥240 | ≥25 | |||||
| St45 | ≥580 | ≥5 | ||||||
| E235 | ≥480 | ≥8 | ||||||
| S20C | ≥410 | ≥245 | ≥25 | ≤156 | ||||
| STKM12A | ≥345 | ≥175 | ≥35 | |||||
| STKM12B | ≥390 | ≥275 | ≥25 | |||||
| STKM12C | ≥470 | ≥355 | ≥20 | |||||
| STKM13A | ≥375 | ≥215 | ≥30 | |||||
| STKM13B | ≥440 | ≥305 | ≥20 | |||||
| STKM13C | ≥510 | ≥380 | ≥15 | |||||
| 45# | ≥600 | ≥355 | ≥16 | ≤229 | ||||
| CK45 | ≥590 | ≥345 | ≥21 | ≤230 | ||||
| C45 1.0503 | ≥600 | ≥355 | ≥16 | ≤229 | ||||
| 30CrMo | ≥930 | ≥785 | ≥12 | ≤229 | ||||
| 4130 | ≥930 | ≥786 | ≥12 | ≤229 | ||||
| SCM430 | ≥930 | ≥785 | ≥12 | ≤229 | ||||
| 40Cr | ≥980 | ≥785 | ≥9 | ≤207 | ||||
| SCr440 | ≥980 | ≥785 | ≥12 | ≤207 | ||||
| 5140 | ≥980 | ≥785 | ≥9 | ≤207 | ||||
| 40CrMo | ≥1080 | ≥930 | ≥12 | ≤217 | ||||
| 35Cr | ≥930 | ≥735 | ≥11 | ≤207 | ||||
| 5135 | ≥536 | ≥555 | ≥31 | ≤414 (HBW) | ||||
| SCr435 | ≥930 | ≥735 | ≥11 | ≤207 | ||||
| 34Cr4 | ≥930 | ≥735 | ≥11 | ≤207 | ||||
| 1.7033 | ≥836 | ≥538 | ≥24 | ≤233 (HBW) | ||||
| Dimension tolerance comparision Chart | ||||
| Outside Diameter | GB/T 3639 | DIN2391(EN10305) | RAY steel tube standard | Special standard |
| 6-30mm | +/-0.1 mm | +/-0.08 mm | +/-0.05 mm | +/-0.03 mm |
| 31-40mm | +/-0.15 mm | +/-0.15 mm | +/-0.05 mm | +/-0.03 mm |
| 41-50mm | +/-0.20 mm | +/-0.20 mm | +/-0.05 mm | +/-0.03 mm |
| 51-60mm | +/-0.25 mm | +/-0.25 mm | +/-0.08 mm | +/-0.03 mm |
| 61-65mm | +/-0.30 mm | +/-0.30 mm | +/-0.10 mm | +/-0.05 mm |
| Thickness | +/-0.12 mm | +/-0.10 mm | +/-0.05 mm | +/-0.03 mm |