... type quick coupling(DN40-150)Melon-type quick coupling metal hoses YK, R1K (Seamless ring pipes, melon-type ... -type coupling at two ends)H HFlange connectionFlange connection metal hoses LA1, LF1 (Longitudinal spiral hoses, slip-on ... reasonable installation. Hot Tags: PTFE, Teflon, PTFE pipe, Teflon pipe, PTFE stainless steel wire pipe, Teflon stainless steel wire pipe PTFE stainless steel wire pipe