Oem Hydraulic Cylinder Manufacturers Customized Loading Feeding Hydraulic Cylinders Telescopic Multi-Stage Cylinder Classification Good Hydraulic Cylinders – We Make Sure Inside Parts
The tube follows GUOYUE CD250 style.
Tube steel can be 45#, 42CrMo, or 27SiMn.
Hole is ground to H8 and feels smooth, Ra under 0.4 μm.
Head, base, ears, and piston are only 45# steel.
We do not use cast iron or cast steel. Slow-Down Parts
You can pick fixed bumpers or floating bumpers so the rod slows down safe at any speed or load. Welds
We hit every heavy-load weld with ultrasound.
This takes away most of the stress and makes the weld last longer. Seals
We only use top seals from NOK (Japan), Trelleborg (Sweden), Merkel and GP (Germany).
We do not use local seals. Checks
Each cylinder is tested to GB/T15622-2005 and our own Q/GAKY014-2023.
You get a test sheet and a pass paper. Promise
We give one year cover from ship date.
If it breaks because of how we made it, we fix or swap it for free.
This cylinder is strong. It uses thick steel and hard rod. It does not bend. The seal keeps oil in, no leak. It has many tubes that slide out one by one. It lifts high but stays short Plain-English Advantages
These factory-made telescopic cylinders stretch long but shrink short, like an old radio antenna. Each steel sleeve is honed smooth, chrome rods fight rust, and tough seals keep oil inside for years. Pick two, three, or four stages, any stroke you need, and add the mounts, ports, or paint you fancy. They arrive fast, cost less than big-name brands, and come with a no-drama warranty. No clang at the end, no leaks on the floor—just steady muscle ready to work. Plain-English Uses (100 words)
Picture a dump truck lifting its bed sky-high, a grain trailer spilling corn into a silo, a garbage truck squeezing trash flat, a forklift stacking pallets, a boat hoist raising hulls, or a farm sprayer unfolding its boom. Any place that needs a big reach from a tiny folded package loves these cylinders.

Application	Engineering machinery, mine, shipping, metallurgy, water conservancy, offshore, agriculture, etc.
Seal	Parker, Merkel, NOK, Hallite,etc.
Paint	Red, Grey, Yellow, Black, etc.
Material	St52, CK45, 4140, Duplex2205, Stainless Steel 304/316, etc.
Certificate	ABS, Lloyds, SGS, etc.
Package	Bubble-wrap packing, then in wooden case.
Color	choose the color according to customer requirement
Core components	Bearing,Pressure vessel,Pump
Is it a standard part?	Nonstandard
Structure	Piston Type, Plunger Type, Telescopic Type,
Power	Hydraulic & Pneumatic
Brand	Guoyue
Sample	Available