Zviyero zvepombi yesimbi

Mapaipi esimbiZvinorongwa zvichienderana nechimiro chepakati pezvikamu kuita mapaipi edenderedzwa, sikweya, rectangular, uye ane chimiro chakakosha; nezvinhu zviri mumapaipi esimbi ekuvaka kabhoni, mapaipi esimbi ekuvaka ane low-alloy, mapaipi esimbi e alloy, nemapaipi e composite; uye nekushandiswa mumapaipi ekutakura mapaipi, zvivakwa zveinjiniya, midziyo yekupisa, maindasitiri epetrochemical, kugadzira michina, kubhoriwa kwejiyoroji, uye midziyo ine simba rakawanda. Nemaitiro ekugadzira, zvinokamurwa kuita mapaipi esimbi asina musono uye mapaipi esimbi akasungirirwa. Mapaipi esimbi asina musono anoiswawo muzvikamu zviviri mumhando dzemhando dzehot-rolled necold-rolled (drawn), nepo mapaipi esimbi akasungirirwa akakamurwa kuita mapaipi akasungirirwa akasungirirwa akasungirirwa akasungirirwa uye mapaipi akasungirirwa akasungirirwa akatenderera.

 

Kune nzira dzakawanda dzekumiririra maparamita emapaipi. Pazasi pane tsananguro dzehukuru hwemapaipi hunoshandiswa kazhinji: NPS, DN, OD uye Schedule.

(1) NPS (Saizi yepombi yezita)

NPS ndiyo mwero wekuNorth America wemapombi ane simba guru/pasi uye tembiricha yepamusoro/pasi. Inhamba isina chiyero inoshandiswa kuratidza saizi yepombi. Nhamba inotevera NPS inoratidza saizi yepombi yakajairwa.

NPS yakavakirwa pahurongwa hwekare hweIPS (Iron Pipe Size). Sisitimu yeIPS yakavambwa kuti isiyanise saizi dzemapaipi, nehukuru hwayo hunoratidzwa mumainji hunomiririra dhayamita yemukati. Semuenzaniso, pombi yeIPS 6" inoratidza dhayamita yemukati iri pedyo nemainji matanhatu. Vashandisi vakatanga kudana mapaipi semapaipi ane 2-inch, 4-inch, kana 6-inch.

 

(2) Dhayamita Yezita DN (Dhayamita Yezita)

Dhayamita Yezita DN: Imwe nzira yekufananidzira dhayamita yezita (bore). Inoshandiswa mumapiping systems semusanganiswa wemavara nenhamba, ine mavara eDN anoteverwa nenhamba isina dimension. Zvinofanira kucherechedzwa kuti DN nominal bore inhamba yakakwana yakatenderera yekutarisa, ine hukama hwakasununguka chete nehukuru chaihwo hwekugadzira. Nhamba inotevera DN inowanzo enzaniswa nemamirimita (mm). Mumitemo yeChinese, dhayamita dzemapipi dzinowanzo kuratidzwa seDNXX, senge DN50.

Dhayamita dzepombi dzinosanganisira dhayamita yekunze (OD), dhayamita yemukati (ID), uye dhayamita yemhando yepamusoro (DN/NPS). Dhayamita yemhando yepamusoro (DN/NPS) haienderane nedhayamita chaiyo yekunze kana yemukati yepombi. Panguva yekugadzira nekuisa, dhayamita yekunze inoenderana uye ukobvu hwemadziro zvinofanirwa kutariswa zvichienderana nezvinodiwa kuti paverengwe dhayamita yemukati yepombi.

 

(3) Dhayamita Yekunze (OD)

Dhayamita Yekunze (OD): Chiratidzo chedhayamita yekunze ndiΦ, uye chinogona kuratidzwa seOD. Pasi rose, mapaipi esimbi anoshandiswa kutakura mvura anowanzoiswa muzvikamu zviviri zvedhayamita yekunze: Series A (dhayamita yekunze yakakura, imperial) uye Series B (dhayamita yekunze diki, metric).

Kune akawanda mapombi esimbi ekunze dhayamita dzakatevedzana dziripo pasi rose, dzakadai seISO (International Organization for Standardization), JIS (Japan), DIN (Germany), uye BS (UK).

 

(4) Purogiramu Yekukora Kwemadziro Epombi

Muna Kurume 1927, American Standards Committee yakaita ongororo yeindasitiri ndokuisa kuwedzera kudiki pakati pemagiredhi maviri ekutanga eukobvu hwemadziro epombi. Sisitimu iyi inoshandisa SCH kuratidza ukobvu hwepaipi.

 

 EHONG STEEL--hukuru hwepombi yesimbi