expansion tube

Brief Introduction to Expansion Tube Products

Expansion pipe is a plastic or metal tubular accessory used in construction, decoration, and equipment installation to fix auxiliary fasteners (such as screws) on substrates such as walls and boards. The following is a brief introduction to it:

Material type: The mainstream is plastic material (such as polyethylene, nylon), which is low-cost, corrosion-resistant, and suitable for non load bearing scenarios such as wood, gypsum board, brick walls, etc; Expansion pipes made of some metal materials (such as aluminum and galvanized steel) have stronger load-bearing capacity and can be used in scenarios such as lightly load-bearing concrete and solid brick walls.

Structural features: It is usually a hollow tube with stripes, spikes, or expansion grooves on the tube body. After being inserted into the substrate and drilled, the tube body will expand and deform when the screws are screwed in. It is firmly clamped in the substrate through friction and squeezing force to prevent the fasteners from loosening.

• Model specifications: Common specifications are divided according to the outer diameter, such as 6mm, 8mm, 10mm, 12mm, etc., which need to be matched with the corresponding diameter screws and drill hole sizes. For example, the 6mm expansion tube is compatible with M4-M5 screws, and the drill hole diameter is usually 6mm-8mm.

• Functional use: Mainly solves the problem of screws not being directly fixed on soft or porous substrates (such as gypsum board, hollow bricks), widely used for installing hanging racks (such as air conditioning hanging racks, storage racks), lighting fixtures, switch sockets, decorative paintings and other light or medium-sized objects.

• Key points of use: Before use, choose the appropriate material and specification of the expansion tube according to the hardness of the substrate and the weight of the object; The drilling depth should be slightly longer than the length of the expansion tube to ensure ..