Dhayamita yezita uye dhayamita yemukati nekunze yepombi yesimbi inotenderera

Pipe yesimbi inotendereraimhando yepombi yesimbi inogadzirwa nekumonera simbi kuita shape yepombi pakona imwe chete (forming angle) wozoibatanidza. Inoshandiswa zvakanyanya mumapaipi ekufambisa mafuta, gasi rechisikigo uye mvura.

 
Dhayamita Yezita (DN)
Dhayamita yepakati inoreva dhayamita yepakati yepombi, inova kukosha kwepakati kwehukuru hwepombi. Papombi yesimbi inotenderera, dhayamita yepakati inowanzova pedyo, asi isingaenzane, nedhayamita chaiyo yemukati kana yekunze.
Kazhinji inoburitswa neDN pamwe nenhamba, yakaita seDN200, iyo inoratidza kuti dhayamita yepakati i200 mm steel pipe.
Madhayamita akajairika (DN):
1. Hurefu hudiki hwedhayamita (DN100 - DN300):
DN100 (4 inches)
DN150 (6 inches)
DN200 (8 inches)
DN250 (10 inches)
DN300 (12 inches)

2. Chiyero chepakati nepakati chedhayamita (DN350 - DN700):
DN350 (14 inches)
DN400 (16 inches)
DN450 (18 inches)
DN500 (masendimita makumi maviri)
DN600 (24 inches)
DN700 (28 inches)

3. Hurefu hwedhayamita (DN750 - DN1200):
DN750 (masendimita makumi matatu)
DN800 (32 inches)
DN900 (36 inches)
DN1000 (40 inches)
DN1100 (44 inches)
DN1200 (48 inches)

4. Hurefu hwakakura hwedhayamita (DN1300 zvichikwira):
DN1300 (52 inches)
DN1400 (56 inches)
DN1500 (masendimita makumi matanhatu)
DN1600 (64 inches)
DN1800 (72 inches)
DN2000 (80 inches)
DN2200 (88 inches)
DN2400 (96 inches)
DN2600 (104 inches)
DN2800 (112 inches)
DN3000 (120 inches)

OD neID
Dhayamita Yekunze (OD):
OD ndiyo dhayamita yekunze kwepombi yesimbi inotenderera. OD yepombi yesimbi inotenderera ndiyo saizi chaiyo yekunze kwepombi.
OD inogona kuwanikwa nekuyera chaiko uye inowanzo kuyerwa mumamirimita (mm).
Dhayamita Yemukati (ID):
ID ndiyo dhayamita yemukati mepombi yesimbi inotenderera. ID ndiyo saizi chaiyo yemukati mepombi.
ID inowanzo verengerwa kubva paOD kubvisa kaviri ukobvu hwemadziro mumamilimita (mm).
ID=OD-2×ukobvu hwemadziro

Maitiro akajairika
Mapaipi esimbi anotenderera ane dhayamita dzakasiyana ane mashandisirwo akasiyana muminda yakasiyana:
1. Pombi diki yesimbi ine dhayamita shoma (DN100 - DN300):
Inoshandiswa zvakanyanya mumainjiniya emaguta pakugadzira mapaipi emvura, mapaipi emvura, mapaipi egasi, nezvimwewo.

2. pombi yesimbi inotenderera ine dhayamita yepakati (DN350-DN700): inoshandiswa zvakanyanya mupombi yemafuta, gasi rechisikigo uye pombi yemvura yeindasitiri.

3. pombi yesimbi yakatenderera ine dhayamita hombe(DN750 - DN1200): inoshandiswa mumapurojekiti ekufambisa mvura kure, mapaipi emafuta, mapurojekiti makuru emaindasitiri, akadai sekufambisa kwepakati nepakati.

4. pombi yesimbi inotenderera ine dhayamita yakakura kwazvo (DN1300 zvichikwira): inonyanya kushandiswa kumapurojekiti emapaipi emvura, mafuta negasi anoyambuka dunhu, mapaipi epasi pemvura nemamwe mapurojekiti makuru ezvivakwa.

Mitemo nemaitiro
Dhayamita yezita uye zvimwe zvinotsanangurwa zvepombi yesimbi inotenderera zvinowanzogadzirwa zvichienderana nezvinodiwa nemitemo, zvakaita se:
1. Mitemo yepasi rose:
API 5L: inoshanda papombi yesimbi yekufambisa mapaipi, inotsanangura saizi uye zvinodiwa zvepombi yesimbi inotenderera.
ASTM A252: inoshanda papombi yesimbi yekuvaka, saizi yepombi yesimbi inotenderera uye zvinodiwa pakugadzira.

 

2. Mwero weNyika:
GB/T 9711: inoshanda papombi dzesimbi dzekufambisa mafuta negesi, inotsanangura zvinodiwa zvehunyanzvi zvepombi dzesimbi dzakatenderedzwa.
GB/T 3091: inoshanda pakutakura mvura ine simba shoma nesimbi yakasungirirwa, inotsanangura saizi yepombi yesimbi inotenderera uye zvinodiwa zvehunyanzvi.