详细说明：
产地:包头 成都 冶钢
高压锅炉管20G GB-5310-95
75,85,89,95,102,108,114x5-16
133,146,152,159,168,194x5-18
203,219,245,273,299,325,377x6-36
360,402,426,450,480,530x10-36
低碳用无缝管10#,15#, 20#
10,12,14,16,18,20,25,28x0.5-7
30,32,34,36,38,43,45,48,51,57x1-8
60,63.5,68,73,76,89,108,114x2-16
121,127,133,159,186,180,194x4-36
203,219,245,273,299,325,351,377x8-36