Body material: Ductile iron with FBE ( fusion bonded epoxy) coating or Epoxy painting; Gaskets are NBR or EPDM;
Gripping teeth material: Brass.
Bolts and Nuts: Carbon steel with galvanized zinc plated G4.8/G8.8, or SS304/SS316
Package: wooden cases and protection layer.
Restrained coupling is used for connecting PE pipe. The restrained brass can fastend the pe pipe better, they perform better work than quick adaptor for PE pipes.
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