Double-Ended Threaded Transition Fitting

A cylindrical fitting with male threads on both ends, featuring an integrated hexagonal section and a lateral through-hole. It serves as a diameter transition piece, branch connector, or blind plug in hydraulic and pneumatic systems. This design retains the sealing properties of a rotary body while enabling flow branching or pressure monitoring via the side port, making it ideal for compact fluid control applications requiring multi-directional connections.

Manufacturing precision focuses on ensuring the coaxiality of the external threads and the perpendicularity of the hexagonal installation surface to the axis, preventing seal failure or stress concentration due to misalignment during assembly. The drilling of the lateral hole requires strict positional control to ensure accurate connectivity with the central flow channel. For materials such as stainless steel or carbon steel, we utilize CNC lathes combined with Swiss-type automatic lathes for precision turning. This approach minimizes cumulative errors from secondary clamping, ensuring complete thread profiles and consistency in critical mating dimensions.

Changzhou Senboyu Electric is equipped with Tsugami Swiss-type lathes, Taikan machining centers, and high-precision grinders, supporting multi-process concentrated machining from bar stock to finished products. We employ rigorous inspection methods using Keyence video measuring systems, pneumatic gauges, and hardness testers to strictly screen key outer diameters, pitch, hole diameters, and surface details. Surface treatments such as passivation, electroless nickel plating, or electrolytic nickel plating are available to enhance corrosion resistance based on operational requirements. We provide one-stop solutions ranging from single-piece prototyping to bulk delivery.