Mwadzina m'mimba mwake ndi mkati ndi kunja awiri a mulingo zitsulo chitoliro

Spiral steel pipendi mtundu wa chitoliro chachitsulo chopangidwa mwa kugubuduza chingwe chachitsulo kukhala mawonekedwe a chitoliro pa ngodya inayake yozungulira (kupanga ngodya) ndiyeno kuwotcherera. Amagwiritsidwa ntchito kwambiri m'mapaipi amafuta, gasi komanso kufalitsa madzi.

 
Nominal Diameter (DN)
M'mimba mwake mwadzina imatanthawuza kukula kwake kwa chitoliro, chomwe ndi mtengo wamba wa kukula kwa chitoliro. Kwa ozungulira zitsulo chitoliro, m'mimba mwake mwadzina nthawi zambiri pafupi, koma osati wofanana, mkati kwenikweni kapena kunja awiri.
Nthawi zambiri amawonetsedwa ndi DN kuphatikiza nambala, monga DN200, zomwe zikuwonetsa kuti m'mimba mwake mwadzina ndi chitoliro chachitsulo cha 200 mm.
Miyezo yodziwika bwino ya nominal diameter (DN):
1. Mtundu waung'ono (DN100 - DN300):
DN100 (4 mainchesi)
DN150 (6 mainchesi)
DN200 (8 mainchesi)
DN250 (10 mainchesi)
DN300 (12 mainchesi)

2. Wapakati awiri osiyanasiyana (DN350 - DN700):
DN350 (14 mainchesi)
DN400 (16 mainchesi)
DN450 (18 mainchesi)
DN500 (20 mainchesi)
DN600 (24 mainchesi)
DN700 (28 mainchesi)

3. Large m'mimba mwake osiyanasiyana (DN750 - DN1200):
DN750 (30 mainchesi)
DN800 (32 mainchesi)
DN900 (36 mainchesi)
DN1000 (40 mainchesi)
DN1100 (44 mainchesi)
DN1200 (48 mainchesi)

4. Owonjezera m'mimba mwake osiyanasiyana (DN1300 ndi pamwamba):
DN1300 (52 mainchesi)
DN1400 (56 mainchesi)
DN1500 (60 mainchesi)
DN1600 (64 mainchesi)
DN1800 (72 mainchesi)
DN2000 (80 mainchesi)
DN2200 (88 mainchesi)
DN2400 (96 mainchesi)
DN2600 (104 mainchesi)
DN2800 (112 mainchesi)
DN3000 (120 mainchesi)

OD ndi ID
Diameter Yakunja (OD):
OD ndi mainchesi akunja kwa chitoliro chachitsulo chozungulira. OD ya chitoliro chachitsulo chozungulira ndi kukula kwenikweni kwa kunja kwa chitoliro.
OD ikhoza kupezedwa ndi kuyeza kwenikweni ndipo nthawi zambiri imayesedwa mu millimeters (mm).
Diameter Yam'kati (ID):
ID ndi mainchesi amkati a chitoliro chachitsulo chozungulira. ID ndi kukula kwenikweni kwa mkati mwa chitoliro.
ID nthawi zambiri imawerengedwa kuchokera ku OD kuchotsa kawiri makulidwe a khoma mu mamilimita (mm).
ID=OD-2× makulidwe a khoma

Zomwe zimagwiritsidwa ntchito
Mapaipi achitsulo ozungulira okhala ndi mainchesi osiyanasiyana amafanana ndi ntchito zosiyanasiyana m'magawo osiyanasiyana:
1. Chitoliro chaching'ono chozungulira chachitsulo (DN100 - DN300):
Nthawi zambiri amagwiritsidwa ntchito mu engineering ya tauni pamapaipi operekera madzi, mapaipi otulutsa ngalande, mapaipi a gasi, ndi zina zambiri.

2. sing'anga m'mimba mwake ozungulira zitsulo chitoliro (DN350-DN700): chimagwiritsidwa ntchito mafuta, payipi gasi zachilengedwe ndi payipi madzi mafakitale.

3. lalikulu m'mimba mwake mozungulira zitsulo chitoliro(DN750 - DN1200): amagwiritsidwa ntchito m'ma projekiti otumizira madzi mtunda wautali, mapaipi amafuta, ntchito zazikulu zama mafakitale, monga mayendedwe apakatikati.

4. Super lalikulu m'mimba mwake mozungulira zitsulo chitoliro (DN1300 ndi pamwamba): makamaka ntchito kudutsa dera madzi mtunda wautali ntchito mapaipi mafuta ndi gasi, mapaipi sitima zapamadzi ndi ntchito zina zikuluzikulu zomangamanga.

Miyezo ndi mayendedwe
M'mimba mwake mwadzina ndi zina za chitoliro chachitsulo chozungulira nthawi zambiri amapangidwa molingana ndi milingo ndi zikhalidwe, monga:
1. Miyezo yapadziko lonse lapansi:
API 5L: yogwira ntchito paipi yoyendera zitsulo chitoliro, imanena za kukula ndi zofunikira za chitoliro cha zitsulo zozungulira.
ASTM A252 imagwira ntchito pazitoliro zachitsulo, kukula kwa chitoliro chachitsulo chozungulira komanso zofunikira zopanga.

 

2. Mulingo Wadziko Lonse:
GB/T 9711: yogwiritsidwa ntchito paipi yachitsulo pamayendedwe amafuta ndi gasi, imatchula zofunikira zaukadaulo wa chitoliro chachitsulo chozungulira.
GB/T 3091: yogwiritsidwa ntchito pamayendedwe otsika amadzimadzi okhala ndi chitoliro chachitsulo chowotcherera, imatanthawuza kukula kwa chitoliro chachitsulo ndi zofunikira zaukadaulo.