The schedules of the fittings range from 5s to XXS.Fittings over NPS12, produced by locally heating a portion of the fitting stock to any temperature for forming, shall be annealed, normalized, or normalized and tempered. Sareng kurungan ieu dina siku, tee, pemreg, eusi karon bohong tibatan 0.16%. NPO AP12 ngagedekeun teu kedah panas diubaran dina prosés formasi ieu.