Patent Certificate

A mid-frequency push-type bending head positioning device with nested rings, ZL202120250698.8

A mid-frequency push-type bending head positioning device with nested rings, ZL202120250698.8

A medium-frequency push-type elbow clamping device, ZL202120250715.8

A medium-frequency push-type elbow clamping device, ZL202120250715.8

An eccentric pipe-cutting rotary table device, ZL202120273790.6

An eccentric pipe-cutting rotary table device, ZL202120273790.6

A collecting duct branch outlet pull-out device ZL20212 0273931.4

A collecting duct branch outlet pull-out device ZL20212 0273931.4

A bent pipe lever clamp device ZL202120275682.2

A bent pipe lever clamp device ZL202120275682.2

An induction coil adjustment device along the track, ZL202120243015.6

An induction coil adjustment device along the track, ZL202120243015.6

A medium-frequency transformer heating adjustment displacement device, ZL202120244960.8

A medium-frequency transformer heating adjustment displacement device, ZL202120244960.8

A clamping pipe-bending device for bevel cutting of elbows, ZL202120243011.8

A clamping pipe-bending device for bevel cutting of elbows, ZL202120243011.8

A disc-type clamping device for the inner surface of bent pipe bevels, ZL202120242978.4

A disc-type clamping device for the inner surface of bent pipe bevels, ZL202120242978.4

A steel ball device ZL202121438433.7 used for reshaping and correcting concave deformations in elbow pipe walls

A steel ball device ZL202121438433.7 used for reshaping and correcting concave deformations in elbow pipe walls

An automatic submerged arc welding pipe fitting support and positioning device, ZL202121438383.2

An automatic submerged arc welding pipe fitting support and positioning device, ZL202121438383.2

An automatic rotating cutting device for pipes, ZL202121438432.2

An automatic rotating cutting device for pipes, ZL202121438432.2

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