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Fig 4                                                 Fig 5















                                                                  ùTôÚj§Ls) ©¬h¥x vPôiPoÓ ûTl
                                                                  UûWdÏ (BSP) UûW«PlTh¥ÚdÏm. Eh×\
                                                                  ûTl UûWLs CûQVôL CÚdÏm. B]ôp
                                                                  ùY°l×\ ûTl UûWLs N¬Yô] UûWûVd
                                                                  ùLôi¥ÚdÏm.  Fig 6 p CÕ LôhPlThÓs[Õ.

            ©hf (Pitch)                                           BSP  UûWLs  (BSP thread):  LôpYû]ÑÓ
            JÚ UûW«u AfÑdÏ CûQVôL A[dÏm                           AVou ûTlLs  1/2” ØRp 6” YûW TpúYß
            úTôÕ, JÚ UûW«u JÚ ×s°«XõÚkÕ                           ÑYodL]eL°p                     ¡ûPd¡u\].
                                                                  AhPYûQ«p ùY°®hPØm 1/2”  ØRp 4”
            ARtÏ AÓjR UûW«u AúR Uô§¬ CPj§p
                                                                  AeÏXm YûW«Xô] ®hPeLÞdϬV  1
            Es[ ×s°dÏ CûP«p Es[ çWm ©f
            (Pitch) A[Ü G]lTÓm.
                                                                   Fig 6
            Äh (Lead)

            UûW«PlThP JÚ ùTôÚû[ JÚ RPûY
            Ñtßm úTôÕ, AlùTôÚs GqY[Ü çWm
            SLÚúUô, AkR çWm Äh (Lead) G]lTÓm.
            Ko ÕYdLm Es[ UûW«PlThP T¦l
            ùTôÚ°p, CÕ, AkR UûW«u ©f  (Pitch)
            A[®tÏ NUUôL CÚdÏm. CÚ ÕYdL
            UûWVôL CÚkRôp  CkR Äh (Lead) A[Ü,
            ARu ©hf (Pitch) A[®tÏ CÚ UPeLôL
            CÚdÏm.

            ùaXõdv Be¡s (Helix angle)
            JÚ UûW«u N¬Ü ARu LtTû]Vô]
            ùNeÏjÕd úLôhúPôÓ HtTÓjÕm úLôQm
            ùaXõdv úLôQm G]lTÓm.
            UûW«u ѯ (Hand)                                       AeÏXj§tLô] UûW Gi¦dûLÙm
                                                                  RWlThÓs[]. (Fig 7)
            vÏÚ Øuú]±f ùNpYRtÏ Sôm
            ETúVôLlTÓjÕm ÑZt£«u YûL ѯ
                                                                   Fig 7
            G]lTÓm. YXm ѯ UûW«û] L¥LôWd
            Ñt\ôL Ñtßm úTôÕ UûW Øuú]ßm. Uô\ôL
            JÚ CPm ѯ UûW«û] G§o L¥LWôf
            Ñt\ôL Ñtßm úTôÕ UûW Øuú]ôd¡
            ùNpÛm. (Fig 5)
            ûTl UûWLs Utßm ûTl úPlLs (Pipe
            Threads and Pipe Taps)
                                                                  ûTl CûQlûT AûPjRp (Sealing pipe
            ûTl §ùWhLs  (ûTl UûWLs)  (Pipe
                                                                  joints): Fig 8-p ûTlþu Øû]«p TX UûWLs
            threads): vPôiPoÓ ûTl @©h¥eÏs
                                                                  ØÝûUVôL              EÚYôdLlTh¥ÚjRp
            (¨oQ«dLlThP A[®Xô] ûTl
                                                                  Lôi©dLlThÓs[Õ.
                               ©[m©e þ ©[mTo (NSQF - Revised 2022) - R.T. for Ex. 1.3.14-17                          57
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