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 Advantages:
She’s the gentle giant in a tuxedo: nested chrome sleeves that slide out like a magician’s wand, giving your lift the reach of a giraffe while folding back into a shoebox. Electric-over-hydraulic brains mean you feather the joystick and the car glides skyward, no neck-jerking, no coffee spilling. OEM fit kisses your frame goodbye to shims and swear words. Inside, smart oil paths and heat-proof seals keep everything whisper-quiet and wobble-free, so your Saturday wrench session becomes a lazy backyard chat instead of a wrestling match. Application scenes :
Picture a home garage where Dad lifts the family SUV so junior can change his first oil without scraping knuckles. Or a downtown valet tower, quietly stacking sedans five high while city lights blink outside. Mobile tire trucks rolling up to stranded trucks on Route 66, roadside mechanics raising cabs in the desert sunset, or custom-car shops sliding chassis sideways to weld art into metal—this cylinder slips into every heartbeat moment, stretching tall, folding small, making space where space shouldn’t exist, and always keeping the magic smooth.

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