Best Removable Floor Bolts Manufacturer & High-Load Anchor Products

Traditional wedge or sleeve anchors rely on permanent mechanical deformation of a metal collar, or chemical bonding with resin mortar. Once set, they cannot be backed out without cutting the stud flush and permanently leaving a metal core in the concrete. Removable floor bolts utilize precision-machined threads that directly cut into or mate with a flush female sleeve, permitting 100% clean extraction without destructive slab rehabilitation.

Re-driving a screw anchor into the exact same concrete hole is generally restricted by international building codes because the initial thread-cutting process alters the concrete matrix. However, the bolt itself can be inspected with a certified thread ring gauge and reinstalled into a fresh pre-drilled borehole. For multi-cycle re-use in identical locations, our internal thread drop-in sleeve system is specified.

When dissimilar metals (such as structural aluminum PV rails and carbon steel or stainless steel anchors) come into direct contact in an electrolytic environment, galvanic corrosion rapidly degrades the aluminum. Youlong supplies precision EPDM, neoprene, or high-density polyamide insulating washers and isolator bushings that maintain electrical separation and prevent electrochemical failure.

For ISO 12944 C4 to C5-M extreme marine/industrial corrosion categories, standard electrolytic zinc plating (which only lasts 48–96 hours in salt spray) is inadequate. We engineer removable anchors with marine-grade 316 (A4-80) austenitic stainless steel or apply high-tech multi-layer non-electrolytic zinc flake coatings that withstand >1,500 hours of continuous salt fog testing without red rust formation.

Over-torquing can strip internal concrete threads, while under-torquing leads to vibrational pull-out under dynamic cyclic machinery loads. Youlong provides documented installation guidelines specifying calibrated impact wrench cut-off settings or calibrated manual torque wrench verification (e.g., 80 Nm for M12 Class 10.9 anchors in C30/37 concrete) to achieve the design pre-stress without damaging the substrate.

Yes. Backed by multi-station cold heading machinery, advanced CNC lathes, automated threading systems, and in-house heat treatment furnaces in Yongnian, Handan, we engineer customized thread pitches, countersunk or flanged heads, extended embedment lengths up to 400 mm, and project-specific alloy metallurgy to your exact engineering drawings.