Cross-border Weida industrial grade dipping mini lightweight short handle large opening live wrench multi-functional plumbing an

超薄5寸开口30mm  开口厚度2.8mm

Little Knowledge about Wrenches:

Uses and Types of Wrenches:

Materials of Wrenches:

1. Chromium-vanadium steel: Its chemical symbol is CR-V, and it is of relatively high quality among steel materials.
2. Carbon steel: It is of average quality and is more commonly circulated in the market.

Uses and Technical Features of Open-end Wrenches:

Screws are the main fasteners in mechanical equipment. Open-end wrenches are important tools for processing, production, and maintenance in the mechanical industry. This type of wrench represents a revolution in traditional wrench tools and has the following advantages:

1. It enables quick work. Its working speed is three to four times faster than that of traditional wrenches and even faster than that of speed wrenches.
2. One open-end wrench can be applicable to 2 - 6 specifications of screws, while a double-ended open spanner is only suitable for 2 types of screws. One open-end wrench is equivalent to 2 - 3 open spanners and is equivalent to an adjustable wrench, but it can work quickly without the need to adjust the opening.
3. It has a long service life and is not easily damaged. In contrast, previous speed wrenches were prone to damage.
4. Its manufacturing process is simple, and its cost is even lower than that of open spanners.
5. It is lightweight, easy to carry, and labor-saving during work.

Processing Requirements for Wrenches:

1. Bright chrome: It has a mirror-like luster.
2. Satin chrome: It is non-glossy.
3. Electrophoresis: It is black and has a certain brightness. Under the action of an applied direct current, charged particles move directionally towards the cathode or anode in a dispersed medium, facilitating the separation of substances.
4. Phosphating: It is black but has a dull luster. Substances are immersed in a phosphating solution, and a layer of water-insoluble crystalline phosphorus is deposited on the surface, which is a process of hydrochloric acid conversion.
5. Gray nickel: It is a brand-new surface treatment method with strong anti-rust ability and can increase the service life of the product.
6. There are also other treatments such as blackening, nickel-iron alloy, pearl nickel, black nickel, and titanium plating.

Inspection Requirements for Wrenches:

1. There should be no rust, burrs, cracks, or spots, etc.
2. The wrench jaws should be symmetrical, and the laser engraving should be clear.
3. The hardness should meet the specified standards, and the positioning should be accurate.
4. The worm gear of the adjustable wrench should operate flexibly, and the pin shaft should not be loose.