... piece of metal, rectangular cross sectioned (flat) and long, but not so wide so as to be called ... a sheet.2) Rod, a round or square and long piece of metal or wood3) ... gear box, cardan shaft, crank shaft, connecting rod, torque force rod, suspension spring, steering engine, piston pin, inlet valve ... d251*9900Steel for well blowout, drill ship, drill rod joint, chain used in mine and drill bit, ...