WPT flexbile coupling ductile iron grooved couplings and fittings for sprinkler fire fighting system
flexible coupling
material :ductile iron,
Size:inch 1-12,
surface treatment:common red painting/Epoxy/Galvanized
color:RAL3000 RED,
FM Approved and UL Listed,
can be used in fire protection, system, feed water, natural gas system and etc.
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