A na-arụpụta eriri mmiri siri ike nke Nipple site na shei nwere ike dị elu dịka nkọwapụta na ụkpụrụ ANSI C80.1(UL6) kachasị ọhụrụ si dị.
Ime na mputa elu nke nipples bụ free si ntụpọ na ezigbo welded onuete, na-juputara na evenly ntekwasa na zinc iji na-ekpo ọkụ itinye galvanizing usoro, nke mere na metal-na-metal kọntaktị na galvanic nchebe megide corrosion na-nyere, na nipples na. ogologo ogologo bụ eletriki plated na ogologo ogologo ya na mkpuchi post-galvanizing doro anya iji nyekwuo nchebe megide corrosion.