Curved handle curved handle wrench Plum wrench: The overall quality tool steel forged strong impact, not the discount, variety, widely used in petroleum, chemical, oil refining, petrochemical, power generation, shipbuilding, metallurgy, machinery processing industries such as maintenance and repair work to detect. The difference is stiff hand (should be called fixed wrench) the operation more convenient and suitable space is not narrow and hard occasion. Plum hand corner small board that can be used where only a small tilt angle (just turned the corner wrench 1/2), and because of the large surface access solution that can be used to tighten strong. ? Curved handle tap wrench processing using broaching and replace the previous heat shock processes. Its main advantages: First, to improve the tap wrench of surface roughness, stability improved surface quality; the second is to reduce the labor intensity; three is to reduce environmental pollution. Improved rough production: First, the material is heated by heating coal or oil before heating to electric heating; the second is from the traditional friction-pressure presses to forging machine or forging hammer; third is to improve the system blank line degree of automation. The advantage is not only to reduce environmental pollution, improve the quality of forging stock, reducing the workload after the procedure, eliminating the bar in coal heating (or heating oil) in peroxide, burning, decarbonization and so on. Preform production line even with nitrogen protective device, to achieve a system blank no oxide production. In addition, improved process of forging die, welding mold applications, die hard chrome plating applications, as well as the use of cavity mold machining center machining hard machining applications, have greatly improved the wrench rough performance, dimensional accuracy and mold life. Improved polishing process: First, the widely used chemical polishing, greatly improving the tap wrench surface roughness, surface so that the wrench fully meet the "mirror"; the second is the application of automatic polishing machine polishing using a robot, not only improves the production efficiency, reduce labor intensity, more importantly, to improve the wrench surface shape and smooth lines. Special curved handle tap wrench surface treatment is a surface-black coating, which is a surface coating of gray hammer handle Packing: Packing: cartons, bags, etc., in accordance with the requirements of clients.