What is seamless hydraulic pipe?

Seamless hydraulic pipe is a long strip of steel used in the manufacture of hydraulic and pneumatic cylinder barrels, with a hollow section and no seams around the perimeter. Its inner wall is smooth, and it is not easy to accumulate debris and is not prone to rust and corrosion, which allows the hydraulic transmission components to operate stably for a long time. In addition, seamless hydraulic pipes have high pressure and bending strength and can withstand high-pressure liquid impact and load changes.

Seamless hydraulic pipes are made of cold-drawn seamless steel pipes processed by black or gray phosphating process. A dense phosphate layer forms on the inner and outer surfaces of the steel pipe. After anti-rust treatment, the steel pipe is effectively prevented from being oxidized, so the steel pipe has excellent anti-rust properties. At the same time, the microporous phosphate film (layer) formed on the surface of the steel pipe can effectively absorb the paint on the surface of the steel pipe and effectively prevent the paint from falling off. It is an ideal product for use in on-site operating environments.

Cold-rolled precision seamless steel pipe is a hydraulic steel pipe rolled by a cold-rolled pipe machine using finished seamless steel pipes or seamless steel pipe raw materials, after pickling, phosphating, and saponification treatments. The precision of hydraulic steel pipe is extremely high and can generally be controlled within the range of 0.02-0.05MM.