Oem Chongqing Iron and Steel Steelmaking Sliding Water Inlet 100 45-150.125 90-30 Double Stroke High Temperature Oil Cylinder Construction Machinery 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 cool-headed firefighter inside a volcano of steel. Forged for Chongqing Iron and Steel, her double-stroke heart (100-45-150 and 125-90-30) slides the water inlet like a gentle gate, taming 1 600 °C rivers of melt. Heat-proof seals stay soft when sparks dance, chrome rods shrug off scale, and OEM curves drop straight in—no shims, no midnight swearing. Day after fiery day she whispers, “Let me sip the water,” and the furnace behaves like a sleepy dragon. Application scenes:
Picture night at the caster: glowing slabs roll forward, she glides the slide gate open, quenching the stream so the next perfect bloom can be born. Or a ladle turning like a teapot—she times the pour so sparks paint the sky but never the floor. From BOF converters breathing fire to continuous casters humming lullabies, she’s the quiet hand that keeps steel—and people—safe.

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