涂塑管/衬塑管 Q235B/Q345B/20# DN50
涂塑管/衬塑管 Q235B/Q345B/20# DN65
涂塑管/衬塑管 Q235B/Q345B/20# DN80
涂塑管/衬塑管 Q235B/Q345B/20# DN100
涂塑管/衬塑管 Q235B/Q345B/20# DN125
涂塑管/衬塑管 Q235B/Q345B/20# DN150
涂塑管/衬塑管 Q235B/Q345B/20# DN200
涂塑管/衬塑管 Q235B/Q345B/20# DN250
涂塑管/衬塑管 Q235B/Q345B/20# DN300
涂塑管/衬塑管 Q235B/Q345B/20# DN350
涂塑管/衬塑管 Q235B/Q345B/20# DN400
涂塑管/衬塑管 Q235B/Q345B/20# DN450
涂塑管/衬塑管 Q235B/Q345B/20# DN500
涂塑管/衬塑管 Q235B/Q345B/20# 76/89/102
涂塑管/衬塑管 Q235B/Q345B/20# 108/114/133
涂塑管/衬塑管 Q235B/Q345B/20# 159/168/180
涂塑管/衬塑管 Q235B/Q345B/20# 219/273/325
涂塑管/衬塑管 Q235B/Q345B/20# 377/426/480
涂塑管/衬塑管 Q235B/Q345B/20# 529/630/720