STAINLESS STEEL GRATING SECRETS

Biasanya, angkur jenis ini dipasang langsung ketika proses pengecoran beton masih berlangsung, atau saat beton masih dalam kondisi basah dan belum mengeras/kering.The driving energy is normally supplied by firing a combustible propellant in powder kind.[14] The fastener's insertion provokes the plastic deformation on the base substance which accomm