1)made of mild steel,hot-dip galvanized 2)3-20M are available 3)shape: polygonal, round, dual-arm, single-arm Welcome to ZQDetail description:MaterialMild steel Q235/SS400 with Yeild strength 235Mpa, mild steel Q345 with yeild strength 345Mpa,Height3-20MShape of PoleRound conical(taper ratio:11/1000 and 17/1000); Polygonal conical; Straight square; Tubular stepped; PolygonalShafts are made of ...