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Do you know wrench?

                       Do you know wrench?                                                          


The definition of wrench

A wrench is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning. The basic principle of the use is lever principleit is widely use in our daily life.


Two different quality for wrench


Higher quality wrenches are typically made from chromium-vanadium alloy tool steels and are often drop-forged. They are frequently chrome-plated to resist corrosion and for ease of cleaning.


General quality wrenches are typically made from carbon steel, it is more popular among customers.


Different types for wrench


The wrench is basically divided into two types---the solid wrench and adjustable wrench. 


The solid wrench refers to a wrench that has a fixed number on it, for example, cross wrench has four fixed number on it, please see the following photo.


The other which can be adjusted is adjustable wrench, it includes ①open-end wrench ②Ring spanner③combination wrench ④adjustable spanner⑤claw wrench⑥socket wrenchinternal hexagonal wrench ⑧torque wrench. Please see the following photo.


The certificate for wrench


In general, the customer does not have certificate request on this items, but the certificated may be needed in some countries, we have GS certificated from TUV company for the socket wrench.


Different surface treatments for wrench


There are many kind of surface treatment for the wrenches, mostly is chromed plated, for cross wrench, there are 5 kinds of surface treatment, plastic coated or silver, chromed, painting, sandblasting chromed plated and sandblasting zinc plated.


Different packages for wrench


The package for the wrench is OPP bag generally, for cross wrench, the general package is OPP bag+sticker, some customer also want to hang card; for adjustable wrench and oil filter wrench, the package always is single blister and double blister; for sparking plug wrench, it is tie card.


Company Name: Xi'an Haitu International Supply Chain Management Co., Ltd
Address: No.610 QingYang Int. Plaza, No.65 Keji Er Road, Xi’an,China.

Tel: 86 29 8839095 88332400 88335563
Fax: 86 29 88322370
Email: sherry@autonewland.com



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