| 摘要 |
A process and related system for readily and economically manufacturing structural tubes such as box girders of a variety of different sizes, even in relatively small production amounts, and which process and system comprise transporting and placing of elongated channellike members or profiles so that every consecutive two members are placed in an open face-to-face and oppositely inclined manner, whereby the opposed members are then collectively fed into one or more welding stations where the abutting edges of the flange portions are welded together. Apparatus is used for pulling or driving the welded members into a weld finishing station and also to apparatus for substantially simultaneously effecting straightening of the welded together members which may tend to distort while being subjected to welding. The apparatus is readily adjustable to handle variable size channel members in the selective manufacturing of tubular structural members having varied cross-sectional sizes.
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