Engineering Absolute Hydraulic Force
Hangzhou HydraStark Hydraulic Machinery Co., Ltd. is the factory brand of a specialized hydraulic manufacturer in Hangzhou. Our dedicated engineering and manufacturing team has been building 700 Bar cylinders, pumps and precision bolting tools since 2008 — backed by over 15 years of proven OEM and custom engineering for demanding industrial applications.
Built on Rigorous Engineering
Micron Precision
Every cylinder bore is mirror-finished with hard chrome plating to eliminate micro-abrasions and deliver zero-leakage performance under extreme shock loads.
Tensile Strength
Forged from high-tensile alloy steel and 7075-T6 aircraft aluminum. Heat-treated to resist yield distortion under sustained multi-tonnage holding cycles.
Synchronous Control
Multi-outlet split-flow pumps and digital displacement sensors ensure complex multi-cylinder lifts maintain level positioning within 0.5mm deviation.
Factory-Direct Global Logistics & Delivery
Everything is built and tested at our workshop in Fuyang, Hangzhou. We have no overseas warehouses or middlemen — orders ship straight from the factory by express air or by sea.
Workshop in Fuyang, Hangzhou
A factory site of about 6,600 m² (10 mu). Machining, assembly and pressure testing are all done in-house by our own team.
North America & Europe Express Air Dispatch
DHL / FedEx express air freight for urgent tools, seal kits and replacement cylinders. Transit time depends on destination and customs.
Global Sea Freight & DDP Logistics (Ningbo / Shanghai Port)
Export crating and sea freight from Ningbo / Shanghai port, door-to-door (DDP) available on request.
Real photo from our workshop
Standards We Design and Test To
700 BAR / 10,000 PSI
Standard working pressure, 3/8" NPTF couplers
PRESSURE TEST
Every cylinder is tested at 125% of rated pressure (875 bar for 700 bar tools) before shipping — above the 100% rated-load test required by ASME B30.1.
ASME B30.1
Designed to the ASME B30.1 jack safety standard
ISO 4406
Hydraulic oil cleanliness controlled to ISO 4406 codes
Work Directly With the Factory
Contact our engineering specialists for custom cylinder designs, OEM fabrication, or distributor inquiries.