The expansion screw is composed of screw and expansion tube. The tail of the screw is conical: the inner diameter of the cone is larger than that of the expansion tube. When the nut is tightened, the screw moves outward. Axial movement through threads. By moving the cone part, a large positive pressure is formed around the expansion tube, and the angle of the cone is very small, so that the wall, the expansion tube and the cone can form friction self-locking, thus achieving a fixed effect.
PE, PP, Nylon
White, Blue, red, yellow,green and so on
6*30mm, 8*40mm, 10*50mm, 12*60mm, 14*75mm
Type Concrete Nail:
Widely used for slab heating, enhence the wall of constrction, and for sound insulation.
Mating screw nail
PE New Material
Preferred materials, high bearing capacity, strong and durable, strong corrosion resistance, safe and stable
The expansion area is divided into two symmetrical parts to avoid damage to the installation foundation and cause anchoring failure
The expansion curve design of flange inverted hook type greatly increases the anchoring force of anchor bolt
Leaf Wing On Casing
The blade fins on the casing prevent the expansion tube from rotating and increase friction during installation
The thick wall of the high elastic tube makes the expansion tube more fully expanded
In our factory workshop, we have 15-lines production machine who is producing insulation fastener. And about 40,000 pieces production can be produced for a machine-line per day. So we can guarantee the delivery time very fast. So if you need some special products, give us your darwing or tell us, we can also help you producing them.
Widely used, practical and helpful
Used for fixing curtains/paintings/cabinets/kickboards/partitions/flower baskets/TV sets, etc.
Matters needing attention:
1. The depth and diameter of the hole need to correspond to the size of the engineering product (example: 6MM size expansion pipe needs to play 6MM hole on the wall). 2, in order to ensure the reliability of the installation, please ensure that the length of the matching screw can penetrate the expansion tube, and the extension of min is equivalent to the length of one screw diameter. 3. When using a similar situation to a wall corner, etc., ensure that: (1) The distance between the mounting position of the fish-shaped plastic expansion tube and the angle is above the length of one expansion tube. (2) The unfolding direction of the fin-shaped anti-rotation structure (ie the direction of expansion) should be parallel to the edge of the corner. 4. This product is not suitable for use in places where continuous axial tensile loads (such as vertical suspension installations), and the expansion tube should be protected by min° shear force.
1.Suitable for fire resistant stainless steel insulation fixing. 2.Made out of stainless steel material for corrosion resistance. 3.Fast and simple hammer-set installation reduces working times. 4.Extensive dimensional range allows anchorage of insulation boards up to 250 mm thick. 5.A simple hammer-set installation which reduces working times.
Packing & Delivery
Packing in carton, 1000pcs/carton, or as the customers request.
Langfang Rongfeng Plastic Products Co.,Ltd. is a manufacturer of insulation nails, plastic discs, The valve of injection molded parts, Anchor bolt and any of the plastic products,with well-equipped testing facilities and strong technical force.
Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. Welcome new and old customers from all over the word to contact us for future business relationships and mutual success!