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Home » Product List » Steel Pipe & Tube » Seamless Hot-Rolled Steel Tube (GB/T 17396-1998)
Product Details
Seamless Hot-Rolled Steel Tube (GB/T 17396-1998)
| Model NO.: | GB/T 17396-1998 |
|---|
Product Description
Application: Used in making the coal mine hydraulic support and the pillar and other hydraulic equipment.
| Pipe S ize mm | Tolerances% | |
| Standard | ||
| OD D | ±1 | |
| WT s | ≤20 | ±12.5 |
| >20 | +12.5 - 10 | |
| Grade | Sample Hat Treatment System | Tensile Strength σb Mpa | Yield Strengthσ0.2 Mpa | Elongationδb % | Contraction ψ % | Impact Energy Aku2 J | HB Hardness MAX |
| MIN | |||||||
| 20 35 45 | | 400 510 590 | 245 305 335 | 20 17 14 | | | |
| 27SiMn | 920oC±20oC Water quenching 450oC±50o Temper coolant:oil or water | 980 | 835 | 12 | 40 | 39 | 217 |
Grade | Chemical composition % | | ||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Nb | Re | |
| ≤ | ||||||||||
| 20 | 0.17~0.24 | 0.17~0.37 | 0.35~0.65 | 0.035 | 0.035 | 0.25 | 0.25 | 0.20 | -- | -- |
| 35 | 0.32~0.40 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.20 | -- | -- |
| 45 | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.20 | -- | -- |
| 27SiMn | 0.24~0.32 | 1.10~1.40 | 1.10~1.40 | 0.035 | 0.035 | 0.25 | 0.25 | 0.20 | 0.020~0.050 | 0.02~0.04 |
