Feature:
1. light weight, high strenght
Base on the nature of construction work, the hydraulic cylinders need to suit for high strength, high using frequency, high fatigability. To promise the stability and reliability of application.
2. The seal system
select the excellent seal kits from Japan and Germany. Adopt the advanced physical design, make sure the hydraulic cylinder get the best piston rod oil film.
3. cylinder body
adopt the good quality alloy honed tube, though cold-drawing and rolling, to reach an excellent roughness and surface hardness, improve the wear-resistance.
4. piston rod
middle frequency induction hardening and tempering, chrome plated on rod surface to improve the anti-rust, wear-resistance and anti-scratch property.
5. safety/cushioning function
the inside of cylinder set up an cushioning device in the end of stroke, it can absorb the huge impact.
Specification:
The welding of piston rod adopts fully automatic welding machine and gas shielded weldin process, while use ultrasonic fault detector to inspect.
The roughness of scrape barreling in the cylinder barrel is up to 0.4.
The parts shall adopt forging skill and be tempered HB ≥250.
Testing pressure is 35Mpa--40Mpa.

Application	Excavator, loader, tunneling machine, heading machine
Material of cylinder tube	steel
Coating	All tubes are chrome plated
Working pressure	10MPa-25MPa
Color	Black, Blue, Yellow, White, Red etc.
Mounting Type	Earring-trunnion, double trunnion, double earring (eye end)
Plunger	27Simn or 20#, 45# steel with high frequency quenching
Certification	ISO9001: 2008, SGS, TS16949
Warranty	One year after shipping arrival

3. Quality Control:
1. External Inspection: Purchased Item Inspection, Outsourcing Item Inspection
2. Process Inspection: First Inspection, Random Inspection, Handover Inspection
3. Final Quality Inspection: External Dimensions Inspection, 100% Hydraulic Test
4. Type Inspection
Every piece of hydraulic cylinder are tested and will send out only after they are pasted the each test.
Our company has abundant technical force and perfect testing means. By making wide technical and business cooperation with many related enterprises, universities, colleges and institutes both at home and abroad, and employing senior engineers and software engineers, we have greatly strengthened and improved our designing, processing, and testing abilities
product model