Threaded joint for steel pipes

Details Threaded joint for steel pipes Threaded joint for steel pipes

2009-09-25

2011-12-06

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Screw

C285S333000

Reexamination Certificate

active

08070191

ABSTRACT:
A threaded joint for steel pipes comprises a pin having male threads and a box having female threads which engage with the male threads. An incomplete thread is formed at the start of the male threads and the incomplete thread has a portion in which the angle θ formed between its crest face and its flank on the side facing a complete thread is an obtuse angle and in which the thread height h from the base of the flank is at least 0.2 mm.

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