Njikọ siri ike (RM).
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Njikọta RIGID (RM), Ụdị H/F sitere na RM12, RM16, RM25, RM30, RM35, RM40, RM45, RM50
Njikọ aka siri ike (RM Couplings) na osisi Taper Bore na-enye ndị ọrụ nhazi ngwa ngwa na ngwa ngwa nke ogwe njikọ siri ike na nkwenye nke nhọrọ dị ukwuu nke nha osisi Taper Bore. Flange nwoke nwere ike tinye ohia site na akụkụ Hub (H) ma ọ bụ site na Flange (F). Nwanyị na-enwekarị ohia dabara F nke na-enye ụdị mgbakọ abụọ nwere ike ime HF na FF. Mgbe ị na-eji n'osisi kwụ ọtọ, họrọ mgbakọ kacha adabara.