Hangzhou Wren Hydraulic Equipment Manufacturing Co., Ltd

Hangzhou, China hosts Hangzhou Wren Hydraulic Equipment Manufacturing Co., Ltd, which lists 18 active products across hydraulic equipments, industrial pumps, cylinders, bolts and related tools. The catalogue covers quick‑reaction subsea bolt tensioners, single‑acting and double‑acting hydraulic cylinders, torque‑wrench pumps, various torque wrenches, high‑pressure electrical pumps, nylon‑core hoses, impact sockets and standard fasteners such as bolts, nuts and flanges. Each entry aligns with the supplier’s top categories, for example hydraulic cylinders fall under the Industrial Cylinders category while the bolt tensioners belong to the Bolts category. The product list reflects a focus on high‑strength alloy components and pressure‑rated hydraulic devices.

The Wst Series Quick Reaction Subsea Bolt Tensioner is recorded with HS code 8204.11 and is manufactured from high‑strength alloy steel with a corrosion‑resistant coating, indicating compliance with typical base‑metal bolt standards. Twin Hoses appear with HS code 4009.21, featuring a nylon core reinforced with high‑strength steel wire braids and a plastic outer coating, a common construction for high‑pressure flexible lines. Other items such as the Lp3 Series Torque Wrench Pump, Manual Torque Wrenches, Hnsp Series Super High Pressure Electrical Pump and the La Series Automatic Vehicle Hydraulic Puller are listed without explicit HS codes but belong to the HS‑84 machinery chapter for hydraulic and pneumatic equipment. Together the catalogue provides a concise view of the supplier’s technical product portfolio.

The catalogue includes single‑acting super thin hydraulic cylinders, low‑weight cylinders, mechanical cylinders, a high‑tonnage double‑acting cylinder and an automatic vehicle hydraulic puller. In the hydraulic equipment market, single‑acting cylinders are typically rated between 100 bar and 250 bar, with bore sizes from 32 mm to 150 mm, while double‑acting high‑tonnage units often exceed 300 bar and may reach 350 bar pressure. Materials commonly used are chrome‑moly steel or aluminium alloy, with surface treatments such as phosphate or nitriding for corrosion resistance. The bolt tensioners and fasteners are generally supplied in grades 8.8, 10.9 or 12.9, conforming to ISO 898‑1 standards, and the nylon‑core hoses follow the specifications of IEC 60228 for reinforced polymer cables. Torque‑wrench pumps and manual torque wrenches typically provide torque accuracy of ±3 % within a range of 10 Nm to 2 000 Nm, and are built to meet ISO 6789 requirements.