30MnNbRE hydraulic pillar pipe is based on carbon-manganese steel, with 0.02%-0.05% niobium (Nb) and 0.008%-0.025% rare earth (RE) elements added. It can refine grain size, further enhance the steel’s strength and toughness, and has a tensile strength of ≥ 850MPa. It is suitable for high-impact scenarios such as top-coal caving supports in coal mines, with its fatigue life extended by 30%.
- Hydraulic prop pipe, Seamless Pipe
GB/T 17396 30MnNbRE hydraulic pillar pipe
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Product Detail
Chemical Component
Related Products
Product Detail
Product Name:
GB/T 17396 30MnNbRE hydraulic pillar pipe
Standard:
GB/T 17396
Grade:
30MnNbRE
Thickness:
2.9-60 mm
Section Shape:
Round
Outer Diameter:
38mm-457mm
Place of Origin:
Baotou, China(Mainland)
Usage:
Coal Mine Top-Coal Caving Support,roadheader support cylinders in coal mines
Surface Treatment:
Quenched and Tempered
Tolerance:
OD: ±0.75% WT: ±10%
End:
Plain,beveled,cutting,threading.flange or customized
End Protector:
Plastic caps Anti-corrosion coating
length:
3m-12m(customized)
Brand:
Baotou steel
Delivery Time:
Normally within 30-45 days and according to the quantity.
Chemical Component (GB/T 17396)
| Grade | C | Si | Mn | Cr | Ni | Mo | Cu | Nb | RE | P | S |
| 30MnNbRE | 0.27～0.36 | 0.20～0.60 | 1.20~1.60 | ≤0.30 | ≤0.30 | ≤0.10 | ≤0.20 | 0.020～0.050 | 0.008～0.025 | ≤0.025 | ≤0.015 |
Mechanical Performance (GB/T 17396)
| Grade | Tensilestrength Rm | Yieldstrength YS | ElongationA(％) |
| 30MnNbRE | ≥850MPa | ≥720MPa | ≥13 |
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