CR20 Rigid couplings

Size :2"~8"(50A~200A)

Maintain rigidity of pipeline

UL/ULC/FM certificates acquired.

Super tightening with pyramid shape housing.

(Patented 10-0746968 )

USA PATENT NO.(US 7,540,540 B2)

Gasket grade E (-34°C ~ 115°C)

Scope: 

Heating, Ventilating and Air contitioning

Fire Protection

Industrial Plant

Plumbing

Power

Military

Other Services(Bridge and dam, Underwater etc)