合金钢PT410GH PT450GH PT480GH 19MnMo4-5 19MnMo5-5圆钢 钢板

零切PT410GHPT450GH薄板PT480GH碳素钢棒圆钢板材X9CrMoVNb9-1

1.1158 C30E 1.1178 碳素钢PT480GH C60 1.0601 C22E 1.1151圆钢

P355NL1 P355NL2 PT480GH压力容器用钢中厚板压力容器圆钢