Import Air Drive Hydraulic Pump For Hydraulic Wrench — Buy in wholesale FOB from Supplier in China

The PQ703A Air Drive Hydraulic Pump from Maanshan Woden Mechanical Technology Co., Ltd. is a compact, three-stage automatic flow hydraulic power unit designed to drive torque wrenches in bolting applications. It converts shop compressed air at 6-8 bar into hydraulic pressure up to 700 bar, with an integrated high-pressure gauge rated to 700 bar for direct reading. The aluminium reservoir incorporates an oil level gauge and a pneumatic motor, keeping total mass to 20.5 kg. Infinitely variable pressure adjustment between 40 and 700 bar allows matching output to the specific torque requirements of flange bolting, structural steel connections, or wind turbine tower assembly. The pump can supply either one wrench or two wrenches simultaneously through its outlet ports.

The three-stage flow architecture is a key performance feature. In the initial stage, high flow at low pressure advances the wrench piston rapidly to contact the nut face. As resistance builds, the pump automatically transitions to a medium flow stage, then finally to a high-pressure low-flow stage to achieve full torque without manual intervention. This automatic staging reduces cycle time compared with single-stage pumps and prevents operator error in flow selection. The aluminium tank material offers corrosion resistance and thermal conductivity, though it requires protection from impact in mobile service applications. The 20.5 kg total weight places this unit in the portable category, suitable for field service as well as shop use. Standard hydraulic oil viscosity and compatibility with common synthetic bolt tensioner fluids should be confirmed with the supplier.

Typical buyers include petrochemical maintenance contractors, wind energy installation crews, bridge and steel fabricators, and power generation turbine service teams. These users require controlled bolt tensioning to specified values, often with documentation for quality assurance. The dual-wrench capability improves productivity on flange patterns where multiple bolts must be tensioned in sequence. For import procurement, confirm the exact hydraulic oil capacity, port thread specifications (typically 3/8 inch or 1/2 inch BSPP or NPT for hydraulic wrench hoses), and whether the 700 bar gauge is calibrated and certificated. The source does not state MOQ, price, lead time, packaging, or specific certifications, so these must be negotiated directly with Maanshan Woden Mechanical Technology Co., Ltd.

Maanshan Woden Mechanical Technology Co., Ltd. is based at No. 88, Hongqi South Road, in the Economic and Technological Development Zone of Maanshan, Anhui Province, China, postal code 243000. The supplier holds a 'harbor' trust tier, which represents a mid-level verification status. The response rate is recorded at 0.00 percent with zero average response hours, indicating no platform-mediated communication history to date. This profile should be treated as an unproven listing for initial contact purposes, and buyers should conduct independent verification of the company's operational status.

The source description provides product-specific technical information but no company history, factory size, employee count, revenue figures, client list, or quality management certifications. No details are given about ISO 9001, CE marking for the PQ703A, or calibration certificates for the pressure gauge. The address places the supplier in Anhui Province's industrial corridor, a region with established metalworking and heavy machinery manufacturing, but this geographic association does not substitute for supplier-specific due diligence. Buyers should request business licence verification, any patent or design registration for the PQ703A, and references from existing hydraulic tool distributors before committing to volume procurement.