flensforsedd rorskarv

摘要

As a consequence of its method of formation and the requirement for a flat front face 4, the thickness of collar 2 increases towards the centre of the pipe. Thus the rear face 3 of collar 2 is flared. Flange 5 is formed of complementary shape to the rear face 3 of collar 2. The complementary faces 3 may be straight or curved (Figures 3 and 4). IMAGE