Pipe testing apparatus

Details Pipe testing apparatus Pipe testing apparatus

1983-06-28

1985-05-14

Ciarlante, Anthony V.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73831, G01N 308

Patent

active

045164312

ABSTRACT:
A machine is disclosed for applying lengthwise tension to a length of pipe, such as a joint of pipe used in an oil well drill string, for example, for the purpose of testing the pipe for tensile strength. The machine includes gripping assemblies for holding opposite ends of the pipe in respective parts of the machine which are urged apart to apply tension to the pipe. Each gripping assembly includes a rotary mandrel which is threaded onto a sub secured to the respective pipe end, and a header rotatably mounting the mandrel. The header includes a plate providing restraint for the mandrel precluding its expulsion from the machine in the event of a pipe failure during the application of tension thereto. A rotary drive is provided for each mandrel for threading the mandrel onto and off the respective sub.

REFERENCES:
patent: 2336524 (1943-12-01), Bannister
patent: 2757536 (1956-08-01), Heldenbrand
patent: 2884986 (1959-05-01), Heldenbrand
patent: 3994158 (1976-11-01), Weinhold

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