ʻO ka moʻo mānoanoa o ka paia paipu kila mai ka hui metrology Pelekane, a hoʻohana ʻia ka helu e hōʻike i ka nui.ʻO kapā mānoanoa o kahana ʻia ka paipu ʻole me ka moʻo Hōʻike (40, 60, 80, 120) a pili i ka moʻo kaumaha (STD, XS, XXS).Hoʻololi ʻia kēia mau waiwai i millimeters ma ke ʻano o ka moʻo mānoanoa o ka pā paipu.(E hoʻomaopopo: Nui - ʻaʻole mau ka waiwai o ka Schedule40, akā e nānā i ke anawaena o waho o ka paipu.)

ʻO ke ʻano o ka hōʻike ʻana i ke anawaena paipu a me ka mānoanoa, ke anawaena o waho nominal a me ka mānoanoa liʻiliʻi o ka paipu no ka ʻili wela, ka NPS no ka paipu paipu a me ka helu papa o ka paia paipu.ʻO ka moʻo mānoanoa o ka paia he 8 moʻo mai 10 a 20, 30, 40, 80, 120, 140, 160. ʻO ka 40 series ka moʻo maʻamau, ʻo ka 80th ka moʻo mānoanoa, a ʻo ka 120 ka mānoanoa keu.moʻo.

ʻOkoʻa loa ka mānoanoa o ka pā o American Standard a me ka standard home.ʻO ka maʻamau, ʻaʻole kiʻekiʻe nā māka kaomi ʻelua o CL.150 a me CL.300.ʻO ka maʻamau, hoʻohana ʻia ʻo SCH10S a me SCH40.Ma lalo o 50 koho SCH80 a me SCH40S.

SCH40, helu paipu, ina he hale a he haole paha, ua hoohana ia o Sch.XX e hoike i ka manoanoa o ka pa o ka paipu.Hoʻokomo pū ʻia ʻo GB/T81631 HG20553 i ka pae aupuni GB/T81631 HG20553, a me nā mea ʻē aʻe, e like me ke anawaena o waho o ka paipu a i ʻole ka nui o ka paipu, ʻokoʻa ka mānoanoa pā o nā nui like ʻole i hōʻike ʻia e ka helu paipu like.

ʻO ke ʻano no ka hōʻike ʻana i ka mānoanoa o ka pā o ka paipu kila maʻemaʻe ʻekolu mau ʻano: ka nui o ka paipu, ka nui o ka mānoanoa o ka pā a me ke kaumaha o ka paipu.

1) Hōʻike ʻia ka mānoanoa o ka pā e ka helu paipu "Sch".
ʻO ka helu ana o ka paipu ka lakio o ke kaomi hoʻolālā paipu i ke koʻikoʻi ʻae ʻia o ka mea ma ka mahana hoʻolālā i hoʻonui ʻia e 1000 a puni.ʻO ia hoʻi: Sch=P/[σ]t×1000
ANSI B36.10 ka mānoanoa pā: Sch10, Sch20, Sch30, Sch40, Sch60, Sch80, Sch100, Sch120, Sch140, Sch160 nā māka heʻumi;
ANSI B36.19 mānoanoa pā: Sch5s, Sch10s, Sch40s, Sch80s ʻehā mau māka;

2) E like me ka mānoanoa o ka paia o ka paipu kila, Kina, ISO, Iapana, ua aponoia kekahi mau paipu kila.

3) Hōʻike ʻia ka mānoanoa o ka pā paipu e ke kaumaha o ka paipu, e hoʻokaʻawale i ka mānoanoa pā o ka paipu i ʻekolu ʻano:
a.Paipu kaumaha maʻamau, i hōʻike ʻia ma STD
b paipu mānoanoa, i hōʻike ʻia ma XS
c.ʻO ka paipu mānoanoa ʻē aʻe, hōʻike ʻia e XXS.
No nā paipu me DN ≤ 250mm, Sch40 ua like ia me STD, DN <200mm paipu, Sch80 ua like ia me XS.