It is necessary to ream the bottom of the back-expanded mechanical anchor bolt. There are many mechanical anchor bolts with the back-expanded bottom on the market. Generally, the unprofessional will say to the customer that you need a double pipe or a single pipe. In fact, the back-expanded bottom anchor is a pipe. , The products made by professional large manufacturers can be used together with their own supporting bottom anchor bolts, which work very well. Unprofessional small manufacturers can only imitate the appearance of large manufacturers, but they cannot produce real bottom-expanding anchor bolts, and they buy anchor bolts from small manufacturers. 100% of small manufacturers cannot provide professional bottom-expanding drill bits and corresponding accessories. Even if there are drill bits, there are some waste drill bits that are inaccurate in bottom expansion, and can not even play the role of hole reaming, and the double-pipe rear expansion bottom anchor bolts mentioned by some small manufacturers of rear expansion bottom anchor bolts that do not understand in the market are actually meaningless. , The post-expanded bottom anchor only needs to be expanded once, and the secondary expansion can only play a role of expansion without reaming, which will damage the concrete very much. Buried effect, no expansion force, no expansion effect on concrete.
Mechanical Anchor Bolt Rear-Expanding Anchor Bolt Self-Expanding Bottom Reaming Type Anchor Bolt Self-Expanding Bottom Reaming Type Anchor Bolt-Advanced Reaming Skills, Anchor Bolt Expansion Plate is equipped with milling cutter teeth, the cutter teeth are inlaid with alloy blades or coated Covered with diamond wear-resistant layer, the anchor bolt body can continuously cut and expand the hole when it rotates. When the edge of the hole encounters the problem that the steel bar can continuously complete the operation and expand the hole, this technology is a serious technical breakthrough in the field of post-anchoring. Self-cutting bottom reaming anchor bolts do not require professional tools. The anchor bolt body automatically completes the reaming after rotation, forming a mechanical lock key to be reliably fixed in the concrete, which is suitable for trembling loads and cracked concrete. Product description: The expansion piece of this structural anchor expands gradually when it is subjected to external pressure. During the cutting process, it is always in close contact with the concrete hole wall, and the hole reaming precision is high. Touching constitutes a mechanical locking key, the kneading stress is evenly distributed, no slip occurs when there is a trembling load, and the pre-embedded effect is equal.
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