SZM expansion anchor is the key product to connect steel structure (equipment/fitting etc.) and concrete structure (hard stone). Compare with other bolts in the market, SZM anchor bolt have better performance and applicability.

Technology characteristics
*Two expansion sleeves on the anchor rod to increase the squeezing and friction area between anchor rod and wall of hole;
*Thread on the expansion sleeves increase the friction factor of the squeezing surface;
*Spring structure of the expansion sleeves keep the bolt moving to the bottom of hole one-way;
*Thread on the expansion sleeves help reducing the weakening of anchor strength and slip;
*Two expansion sleeves structure have the function of higher succeeding expansion and break on the bolt;
*Simple shape and production technology, economic and reliable performance.
Application Range
SZM-1 and SZM-2 anchor bolts are high strength and loading bolts which connect big steel structure (equipment/fitting etc.) and concrete structure or hard stone. The fields where these products can be used are listed below: curtain wall steel frame/installation of elevator/power distribution box/big ventilation pipe/heavy goods frame/installation of air conditioning/fencing of high way etc.