KUDAT standard amphibious excavator undercarriage pontoons including two pieces of pontoons (left &right), one mounting frame and two pieces of connection beams. These standard pontoons can be connected with any type of upper structure,such as Caterpillar, Hitachi, Komatsu, Kobelco, SANY...etc.  And all they are only suitable to work on shallow water of depth less than 1.5 meters.
 
Technical specification of KUDAT standard pontoons:
Optional design of the undercarriage pontoons
Side pontoons and spuds: designed for deep water of depth 2m-5m
The side pontoons and spuds can be selected to install at side of main pontoons in order to work on deep water from 2 meters to 5 meters. Spuds length is designed according to the depth of water.
The spuds move up and down by driving motor and lay down by cylinders. There are two types: full-automatic type and semi-automatic type.
Extendable and retracted pontoons: designed for complete transportation without dis-assembly or narrow working place.
The width of the undercarriage pontoons can be flexible from 4.3m to 5.3m by hydraulic cylinder or mechanically by buckets.