steel welded round ring for construction (1) we are factory (2)size 6mm-30mm ( ... .D.G /self colour (4) Steel 304 316 steel welded round ring for construction1)Standard : DIN741,DIN1142,US type,Simplex,Duplex,Oval ... 11/866.5010400 11/457.0017000 13/8610.6319000 STEEL WELDED ROUND RING FOR CONSTRUCTION