Main Products: Seamless Steel Pipe And Fittings ,welding tube ,steel fitting ,flange ,casting pipe
Hydraulic seamless steel tube
USD $600 - $900 /Metric Ton
Min.Order:100 Metric Tons
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Henan Xinfengyi Enterprise Co., Ltd.
Business Type: Trading Company
Zhengzhou Henan ChinaMain Products: Seamless Steel Pipe And Fittings ,welding tube ,steel fitting ,flange ,casting pipeProduct Details
hydraulic seamlesssteel tube
Outer diameter :70mm-426mm
Wall thickness:4mm-60mm
Standard:GB/T17396-1998
Material:27SiMn.
Application:Hydraulic support, hydraulic prop
Packing:Caps on two ends ,wrapped with strong steel strip ,or according to the customers'requirements.
Hydraulic Steel Tube
Seamless steel tube for hydraulic and pneumatic cylinder use
Processing mode | Diameter | Length | Linearity | Precision | Roughness of inner hole |
Cold rolling | 30-100 | ≤12M | 0.3-1.0 | H8-H10 | 0.4-1.6 |
Cold drawn | 30-250 | ≤12M | H8-H10 | 0.8-1.6 | |
Grinding | 40-500 | ≤12M | 1000 | H8-H9 | 0.4-0.8 |
Rolling | 40-400 | ≤7M | H8 | 0.4 |
Mechanical performance
Model | Item | Cold drawn (rolling) tube | metallic cut pipe |
20 | Intensity of tensionσbN/mm2 | ≥510 | ≥390 |
Elongation rate δ5% | ≥5 | ≥20 | |
45 | Intensity of tension σbN/mm2 | ≥647 | ≥590 |
Elongation rateδ5% | ≥4 | ≥4 | |
16Mn | Intensity of tensionσbN/mm2 | ≥640 | |
Elongation rateδ5% | ≥10 | ||
27SiMn | Intensity of tensionσbN/mm2 | ≥840 | |
Elongation rateδ5% | ≥7.5 |
Size tolerance
Inner diameter | warp of wall thickness | |||
H8 | H9 | H10 | ||
30 | +0.033 0 | +0.052 0 | +0.084 0 | ±5% |
30-50 | +0.039 0 | +0.062 0 | +0.100 0 | |
50-80 | +0.046 0 | +0.074 0 | +0.120 0 | |
80-120 | +0.054 0 | +0.087 0 | +0.140 0 | |
120-180 | +0.063 0 | +0.100 0 | +0.160 0 | |
180-250 | +0.072 0 | +0.115 0 | +0.185 0 | |
250-315 | +0.081 0 | +0.130 0 | +0.210 0 | |
315-400 | +0.089 0 | +0.140 0 | +0.230 0 | |
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