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The Greek mathematician Arkutas once described the principle of screw, screw, screw. In the first century AD, the Mediterranean world had begun to use wood screws

It is made of high-quality low-carbon steel wire rod. Galvanized iron wire is divided into hot-dip galvanized wire and cold-galvanized wire (electro-galvanized wire).

First make a hole in the wall, and then insert a wooden plug into the hole. 2. Nail the nails on the cork.

The commonly used classification and specifications of cement nails, commonly known as steel nails, is a kind of nails.

With the increasing popularity of air tools, the nails people use have changed accordingly. The most common iron nails

Shooting nails are nails that use the gunpowder gas generated by firing blank bombs as power to drive into the building.

The nail rods of cement nails have sliding rods, straight lines, twills, spirals, bamboo joints, etc. The common ones are straight lines or sliding rods.

Cement nails, commonly known as steel nails, are a kind of nails. They are made of carbon steel and are made of 45-gauge steel or 60-gauge steel.

Air row nails, also known as straight nails, code nails, are a new type of woodworking nails that bond regularly arranged single nails with adhesive or other methods.

Screws are a common fastener widely used in machinery, electrical appliances and buildings. The general material is metal or plastic

The screw refers to the screw (foreign name: Screw), which is a tool that uses the physical and mathematical principles of the circular rotation

Roll the hot metal billet into a 5mm thick steel bar, and then put it into the wire drawing device to draw wires of different diameters, and gradually reduce the diameter of the wire drawing disc