Model: threaded bolt Specification: 18*2m, 16*6m (customize according to customer requirement) Material: 16Mn, 20Mnsi Characteristic: 1. The anchorage end and the fastening end do not require machining; 2. The strength is equal all the length, high material utilization; 3. Strong anchoring force; 4. Equipped with prestressed gasket, easy to control installation quality; 5. The installation speed is fast, it is a new type of anchor rod, which is a kind of material that save material and work, equal strength, and the left screw steel bolt has a wide application prospect. If you are intrested in our produce,please visit our website