Does the double beam crane main beam two web butt welded seam weld can be in a straight line?
Only the upper flange and the lower flanged flange are at least more than 200mm, and the flange plate and the abdominal plate are more than 200mm. There is no rule that the two boards should be staggered, and the upstairs answer is a monorail.
The issue of gb3811-83 is 3.9.1.9.Let me help you find it, hehe.I hope my answer will help you.
Can't, general domestic experience practices provisions should avoid crossing two pieces of web plate butt weld of greater than 200 mm, and at the same time two web weld should be staggered more than 200 mm, the weld position of two main girder should stagger the car at the same time the distance of the wheel track.
