| 广州输送流体用无缝管GB8163-2008
6,8,12,14,16,18,20,21,22,23,24×1.5-4
各18
25,26,27,28,32,34,36×2.5,4,6
各21
38,40,42,45,48,50,51,54×3.5,4,6,10
各20
55,57,60,63,5,68,70,73×2.5,4,6.8-14
各28
76,80,83,89,90,95,102,108,114×4.5-6-25
各26
121,127,133,140,146,152×3.5,4,6,8,10-35
各30
159,168,178... |