80x40 rhs rectangular hollow section weight astm a500
80x40 rhs rectangular hollow section weight astm a500
Model:80x40 mm
80x40 rhs rectangular hollow section weight astm a500
Model:80x40 mm
astm a500 grade b black square steel pipe carbon steel tube welded pipe
q235 black square steel pipe en10219 60*60mm
EN10219 ERW carbon black square steel pipe