WHAT IS URAMANI WELDING & HOW IT HELPS HIGH PRESSURE CONNECTORS ?

The term, “uranami,” is the literal pronunciation of the two-word Japanese technical term . “Ura” literally means, “reverse side,” and “nami,” “ripples.” “Uranami” is used to describe the penetration bead protruded on the reverse side of the weld joint when welded from the face side of the weld joint.

This is a process of welding, where the high pressure connectors tubes used in excavators & rock breakers cylinders can be welded with only TIG fusion and with flat butt joints rather than groove / chamfered butt joints.

With pressure burst testing withstanding up to 2000 bar these connector tubes do not crack in any of the weld joint & this is solely because of the process of Uranami Welding.