Seamless Hot-Rolled Steel Tubes for Hydraulic Pillar Service

Hydraulic prop tube is made form high-quality carbon structural steel adding one or several types of alloy elements to improve the strength, toughness and hardenability of steel. This hot-rolled seamless steel pipe often needs to go through hardening and tempering, chemical hot treatment, surface hardening and other thermal remedy options.

Compared to high-quality carbon structural steel, hydraulic prop tube owns excellent integrated mechanical real estate. We always roll round, square and flat shaped steel products for usage as important structural parts in machinery or hosting server.

  • Applications of Hot-Rolled Seamless Steel PipeHydraulic prop tube can be used the cylinder or prop in coal mine hydraulic support and used some other hydraulic cylinders or props. It could be widely applied in hydraulic system, plastic machinery, injection molding machinery, rubber machinery, forging machinery, casting machinery, engineering machinery, automobile industry, shipbuilding industry, metal processing and war field. This hot-rolled seamless steel pipe doubles in diesel engine, internal combustion engine, construction machinery, forestry machinery, automation machinery, petrochemical, aerospace, hydraulic pneumatic, air conditioning, shoe-making machinery, and thus.
  • Features of Hydraulic Prop Tube
  • configures fixed-length cutting machines. We can reduce pipes according on the fixed length which is available from customers. This ensures the length accuracy of our hydraulic prop tubes.
  • 2 ends of hot-rolled seamless steel pipes can be cut to be perpendicular to the pipe axis. We should remove the burrs on the end surface.
  • Delivery StatusWe always deliver our hydraulic prop tubes in hot rolling place. We can also deliver products in annealing or hardening and tempering states according to clients' requirements.
  • Without oxidation layer about the and inside of JST hot-rolled seamless steel pipe, it can withstand high make. It also features no leakage, high precision, high fineness and no cold-bending deformation. After flaring and flattening, there is absolutely no seam. After surface derusting process, our hydraulic prop tubes acquire good mechanical processing properties.
  • Standard length of JST hot-rolled seamless steel pipe is 3000 mm to 12000 mm. The allowable delivery length of batch of pipes should not be less than 2000 mm, and pounds should not exceed five percent of this ordered pipe fats.

Chemical Composition of Hot-Rolled Seamless Steel Pipe

Grade Chemical Composition (%)
  C Si Mn p S Cr Ni Cu
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 ≤ 0.30
30MnNbRE 0.27-0.36 0.20-0.60 1.20-1.60 ≤ 0.035 ≤ 0.035 ≤0.25 ≤ 0.25 ≤ 0.30


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