Lock Connector/Lock Receiver

he locking joint is made of 35CrMo or 42CrMo material. After rough machining, it is subject to quenching and tempering heat treatment, and after finishing, the surface is subject to phosphating and nitriding treatment, which effectively eliminates the failure probability of gluing, breaking, outer diameter cracking, etc., making it more wear-resistant and easy to disassemble. All threads are processed using precision CNC lathes and customized forming cutters, which can ensure the tight distance between the drill pipe and joint threads, as well as the consistent precision and interchangeability of the drill pipe and lock joint fitting.

Joint outer diameter	Joint inner diameter	Joint thread		Matching drill rods	Joint material
mm	mm	pitch	taper	mm
57	22	6	1:5	42	40Cr
65	28	6	1:5	50	42CrMo
68	28	6	1:5	50	42CrMo
75	38	6	1:5	60	42CrMo
78	38	6	1:5	60	42CrMo
86	44.5	4	1:6	60	42CrMo
105	50.8	4	1:6	73	42CrMo
121	68	4	1:6	89	35CrMo
127	65	4	1:6	89	42CrMo
140	57	4	1:6	102	42CrMo
152	83	4	1:6	114	42CrMo
168	95	4	1:6	127	42CrMo
178	95	4	1:6	140	42CrMo
We can produce lock joints of different materials, lengths, diameters, and wall thicknesses, as well as process them according to customer requirements or provided drawing samples.

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