| 摘要 |
On the front face of neighbouring pipes (3, 3') there is an angle slab (2), equipped with holes, whose span and diameter are identical with the span and diameter of the corresponding pipes (3, 3'), to which the angle slab (2) is welded by an inner butt seam (4, 4'). A cover (1) is welded to the angle slab (2) by an outer butt seam (5).<IMAGE>
|
