Letoto la botenya ba lipeipi tsa tšepe le tsoa ho yuniti ea metrology ea Borithane, 'me lintlha li sebelisoa ho hlahisa boholo.Thelebota botenya bapipe e se nang seam e entsoe ka letoto la Kemiso (40, 60, 80, 120) mme e hokahane le letoto la boima (STD, XS, XXS).Litekanyetso tsena li fetoleloa ho limilimithara joalo ka karolo ea letoto la botenya ba lebota la tube.(Tlhokomeliso: Boholo - boleng ba Schedule40 ha bo fetohe, empa ho sheba bophara bo ka ntle ba tube.)

Mokhoa oa ho hlalosa bophara ba phala le botenya, bophara bo ka ntle ba lebitso le botenya bo fokolang ba phala bakeng sa sebaka se futhumatsang, NPS bakeng sa phala ea phala le nomoro ea kemiso ea lebota la phala.Letoto la botenya ba lebota le na le letoto la 8 ho tloha ho 10 ho isa ho 20, 30, 40, 80, 120, 140, 160. Letoto la 40 ke letoto le tloaelehileng, la 80 ke letoto le teteaneng, 'me 120 ke e 'ngoe e teteaneng.letoto.

Botenya ba lebota la American Standard le maemo a lapeng bo fapane haholo.Ka kakaretso, likhatello tse peli tsa khatello ea CL.150 le CL.300 ha li phahame.Ka kakaretso, ho sebelisoa SCH10S le SCH40.Ka tlase ho 50 khetha SCH80 le SCH40S.

SCH40, nomoro ea tube, ebang ke ea malapeng kapa ea linaheng tse ling, Sch.XX e sebelisetsoa ho bontša botenya ba lerako la pipe.GB/T81631 HG20553 e boetse e kenyelelitsoe ho standard standard GB/T81631 HG20553, joalo-joalo, ho ea ka bophara bo ka ntle ba phala kapa boholo ba phala, botenya ba lerako la boholo bo fapaneng bo bontšitsoeng ke palo e tšoanang ea phala bo fapane.

Mokhoa oa ho hlalosa botenya ba lerako la phala ea tšepe e sa tsitsang o na le mekhoa e meraro: boholo ba pipe gauge, botenya ba phala ea tšepe le boima ba phala:

1) Botenya ba lerako bo bontšoa ke nomoro ea pipe "Sch".
Nomoro ea tekanyo ea pipe ke karo-karolelano ea khatello ea moralo oa liphaephe ho khatello e lumelletsoeng ea thepa ka mocheso oa moralo o atolositsoeng ke 1000 le ho pota-potiloe.E leng: Sch=P/[σ]t×1000
ANSI B36.10 tekanyo ea botenya ba lebota: Sch10, Sch20, Sch30, Sch40, Sch60, Sch80, Sch100, Sch120, Sch140, Sch160 limaraka tse leshome;
ANSI B36.19 lebota botenya kereiti: Sch5s, Sch10s, Sch40s, Sch80s limaraka tse 'nè;

2) Ho ea ka botenya ba lerako la phala ea tšepe, Chaena, ISO, Japane, litekanyetso tse ling tsa lipeipi tsa tšepe li amoheloa.

3) Botenya ba lerako la phala bo bontšoa ke boima ba phala, bo arolang botenya ba phala ka mefuta e meraro:
a.Tube e tloaelehileng ea boima, e hlahisoang ka STD
b e teteaneng tube, e hlahisoang ka XS
c.Tube e teteaneng e eketsehileng, e hlalosoang ke XXS.
Bakeng sa liphaephe tse nang le DN ≤ 250mm, Sch40 e lekana le STD, DN < 200mm pipe, Sch80 e lekana le XS.