冶金矿产Perforated Steel Sheets I am looking for perforated steel sheets in coils 122cm width 0.3 to o. 5 mm thick hole diameter 2o mm spaced 200 x 500 mm. Quantity around 2000 sq m. And 2mm galvanized coils for purlins, quantity 20 tons. Prepainted steel sheets 0.5 mm thick 122 cm ...