HAS Roll Bolt HSA Roll Bolts are mainly found in structures, devices, beam-to-column connections, cabling in concrete walls and many others. HAS roll… Read more... HDK Anchor Bolts Anchor bolts are means for fastening concrete structures on certain projects which are designed to tolerate high shear and stretch… Read more... Pin and Detonation The major use of pin and detonation are in concrete structures, coil construction and ceiling. They have become distinguished for… Read more...