| 摘要 |
PCT No. PCT/NO88/00008 Sec. 371 Date Jul. 19, 1988 Sec. 102(e) Date Jul. 19, 1988 PCT Filed Jan. 27, 1988 PCT Pub. No. WO88/05707 PCT Pub. Date Aug. 11, 1988.An apparatus method for pipe end preparation and end to end welding of pipes comprises a stationary annular clamp (4) for both clamping and round up of pipes (2). It also has one or two rotating tool carrier rings (5) mounted at one or both sides of the clamp (4) on a track (6). The rotating ring may have thereon devices for cutting, machining of grooves, welding and non-destructive testing (NDT). The round up of the pipe is performed via 6 or more clamping shoes independently operated by screw jacks (18), a wedge mechanism (15) or directly acting hydraulic cylinders.
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