Welcome to inquire about the quotation of Huimei's Metal Expansion Screw, which can provide important supporting screws for construction and home projects.
Material: Iron
Customization: OEM/ODM acceptable
MOQ: 10,000
Certificate: ISO CE
Delivery Time: 15-30 days
Finish: galvanized
In China, choosing Xiamen Huimei Trading Industry Co., Ltd. to purchase Metal Expansion Screw can guarantee good quality and perfect service. We have strict testing and quality control to ensure that every product meets high standards.
Medium and low carbon steel (such as Q235, 45 # steel) wire rods or bars are selected. The cut steel materials are placed in the die of the cold heading machine and formed into a screw through high-pressure impact. A punch press or laser cutting machine is used to precisely mark one or more expansion seams on the steel pipe. The formed screw is then passed through the expansion tube and successively fitted with a flat washer and a nut.
The original plan was for raw materials → component processing → surface treatment → quality inspection → warehousing
When you need to install objects of a certain weight on concrete walls, solid brick walls, rocks or thick gypsum boards and ordinary nails cannot fix them, it is expanding screws for metal, which spans industry, construction and home life and is manifested in every corner of life, such as factory pipes, shopping mall billboards, It's still the wall-mounted TV and water heater at home... If you need it, please contact us in time.
metal strap fasteners are not simply frictional fixation but mechanical locking, thus capable of withstanding extremely high tensile forces (vertical outward forces) and shear forces (forces parallel to the wall surface). They are suitable for fixation on hard substrates such as concrete, solid red bricks, blue bricks, natural rocks, and high-strength blocks, and are very detachable. Moreover, the holes can be reused. Just insert the new screw into the old expansion tube. It meets the requirements of indoor, outdoor, humid or corrosive environments and supports customization.
How to install it correctly?
When installing, first drill holes in the wall with diameters matching the specifications of the screws for thin metal; then insert the expansion screws into the holes and tighten them with a wrench or power tool to expand the serrations and securely fix them in the wall.
What are the differences between stainless steel and galvanized expansion screws?
Galvanization is generally suitable for indoor use, while stainless steel is used outdoors, in damp or corrosive environments.
Why is it necessary to clean the dust in the boreholes before installation?
This is of vital importance! The residual dust and debris from the borehole can form a "soft cushion layer", seriously hindering the close contact of Galvanized Expansion Screws with the hole wall.
