Zingwe ziwiri zofunika kwambiri, monga zowoneka bwino zowoneka bwino komanso ma flanges akhungu, nthawi zambiri amagwiritsidwa ntchito popanga ma pupu. Mawu akuti "B16.5" kapena "B16 5" amagwiritsidwa ntchito mosiyanasiyana ndikunenanso chimodzimodzi. Komabe, muyezo Asme B16 5 (ANI B16 5) amangotulutsa mainchesi 24. Pazikuluzikulu, asme B16.47 ogwiritsa ntchito amatenga kuthamanga, zida, miyeso, kuloledwa ndi kukangana ndi makalasi 75, 150, 400, 600 ndi 900.