ra" . μm,and then performing the matting process; ( )no blind coner treatment the inner welding line and the inner surface being polished,and structure components adopting the full length welding,and then polishing,inner coil pipe using the stress eliminating structure; ( )fastener structure all fasteners...
backfill sand, aggregate, and stone marine surveying, oceanographic, piles, and caissons railroad surfacing and paving concrete cast-in-place concrete reinforcing steel structural precast concrete, plant-cast formwork distributables: general construction construction equipment, tools, and supplies fasteners...
first and foremost among fasteners are nuts and bolts in all their many variations; yet screws, rivets, and hooks and eyes are also used to join parts which must not separate under load. fastener technology in general, particularly welding and associated technologies, also belong to this group. engine...