Qingdao Hyperway International Trade
Grooved rigid couplings are mainly used to connect steel pipes for fire protection system, potable water supply system, municipal construction, mine, chemical factory and other occasions when steel pipes used.
Material of body: ductile cast iron (ASTM A536,Grade: 65-45-12)
Material of gasket: EPDM, NBR, silicon rubber
Standard: UL213
Working pressure: 2.07MPa / 300PSI
Surface treatment: electrostatics powder painting, galvanization
Colors: RAL3000, blue, white or as customized
Bolts and nuts: stainless steel, grade 8.8
All sizes are UL listed and FM approved
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