ASTM A252Chitoliro chachitsulo ndi chinthu chodziwika bwino cha mulu wa chitoliro chozungulira chomwe chimaphimba mitundu yonse yolumikizidwa komanso yopanda msoko ya milu ya chitoliro chachitsulo komwe silinda yachitsulo imagwiritsidwa ntchito ngati chonyamulira chokhazikika kapena ngati chipolopolo chopangira mulu wa konkire wopangidwa m'malo mwake.
Giredi 3ndi giredi yapamwamba kwambiri pakati pa magiredi atatu a A252, ndi osacheperamphamvu yotulutsa ya 310MPa [45,000 psi]ndi osacheperamphamvu yokoka ya 455MPa [66,000 psi]Poyerekeza ndi magiredi ena, Giredi 3 ndi yoyenera kwambiri nyumba zomwe zimalemedwa ndi katundu wolemera kapena m'malo ovuta kwambiri, ndipo nthawi zambiri imagwiritsidwa ntchito pomanga maziko a milatho ikuluikulu, nyumba zazitali, kapena nsanja za m'mphepete mwa nyanja.
A252 yagawidwa m'magulu atatu kuti igwirizane ndi malo osiyanasiyana ogwiritsira ntchito.
Giredi 1,Giredi 2ndiGiredi 3.
Kuwonjezeka pang'onopang'ono kwa katundu wa makina.
Giredi 1imagwiritsidwa ntchito makamaka m'malo omwe nthaka yake ndi yabwino komanso zosowa zake sizili zapamwamba kwambiri. Zitsanzo zake ndi monga maziko opepuka a nyumba zogona kapena zamalonda, kapena milatho ing'onoing'ono yomwe siifuna katundu wambiri.
Giredi 2ndi yoyenera kugwiritsidwa ntchito ndi nthaka yoipa kapena yonyamula katundu wambiri. Mwachitsanzo, milatho yodzaza pang'ono, nyumba zazikulu zamalonda, kapena zomangamanga za malo ogwirira ntchito za anthu onse. Ingagwiritsidwenso ntchito m'malo omwe ali ndi madzi ambiri, monga mitsinje ndi nyanja, komwe kumafunika kukana kusintha kwamphamvu kwa kutentha.
Giredi 3imagwiritsidwa ntchito pazinthu zolemera kwambiri m'mikhalidwe yovuta kwambiri, monga milatho ikuluikulu, maziko a zida zolemera, kapena maziko akuya a nyumba zazitali. Kuphatikiza apo, pamikhalidwe yapadera ya geological, monga dothi lofewa kwambiri kapena losakhazikika, Giredi 3 imapereka mphamvu yayikulu yonyamula katundu komanso kukhazikika.
Idakhazikitsidwa mu 2014,Chitsulo cha Botopndi kampani yotsogola yogulitsa mapaipi achitsulo cha kaboni kumpoto kwa China, yomwe imadziwika popanga mapaipi achitsulo abwino kwambiri komanso opanda msoko.
Zogulitsa zathu zonse zimakwaniritsa miyezo yokhwima ya ASTM A252, zomwe zimaonetsetsa kuti zikugwira ntchito bwino kwambiri pakakhala zovuta kwambiri.
Timaperekanso mitundu yonse ya zolumikizira ndi ma flanges kuti tikwaniritse zosowa za mapulojekiti osiyanasiyana a mapaipi.
Mukasankha Botop Steel, mumasankha kuchita bwino komanso kudalirika.
Mapaipi a ASTM A252 Pipe Pipe akhoza kugawidwa m'magulu awiri akuluakulu opangira:wopanda msoko komanso wolukidwa.
Mu ndondomeko yowotcherera, ikhoza kugawidwanso m'magulu awiri:ERW, EFWndiSAW.
SAW ikhoza kugawidwa m'magulu awiri:LSAW(SAWL) ndiSSAW(HSAW) kutengera komwe cholukiracho chikupita.
Popeza SAW nthawi zambiri imalumikizidwa pogwiritsa ntchito njira yolumikizira arc yolumikizidwa mbali zonse ziwiri, nthawi zambiri imatchedwansoDSAW.
Njira zosiyanasiyana zopangira izi zimathandiza kuti chitoliro cha ASTM A252 cha tubular chikwaniritse zosowa zosiyanasiyana zauinjiniya.
Tchati cha momwe chitoliro chachitsulo chozungulira (SSAW) chimagwirira ntchito ndi ichi:
Chitoliro chachitsulo cha SSAWNdi yabwino kwambiri popanga chitoliro chachitsulo chachikulu ndipo imatha kupangidwa m'mimba mwake mpaka 3,500mm. Sikuti ingapangidwe m'litali kwambiri, komanso yabwino kwambiri pa nyumba zazikulu, komanso chitoliro chachitsulo cha SSAW ndi chotsika mtengo poyerekeza ndi chitoliro chachitsulo cha LSAW ndi SMLS.
Botop Steel ikhoza kupereka mitundu iyi ya machubu achitsulo:
Kuchuluka kwa phosphorous kusapitirire 0.050%.
Zofunikira pa kapangidwe ka mankhwala a ASTM A252 ndizosavuta poyerekeza ndi miyezo ina ya mapaipi ogwiritsira ntchito zina chifukwa chitoliro chikagwiritsidwa ntchito ngati mulu wa mapaipi, chimakhala ndi kapangidwe kake. Ndikokwanira kuti chitoliro chachitsulo chizitha kupirira katundu wofunikira komanso mikhalidwe yachilengedwe. Mankhwala osavuta awa amathandiza kukonza mtengo ndi kupanga bwino pamene akukwaniritsa zosowa zoyambira za chitetezo cha kapangidwe kake komanso kulimba.
AGome 2 limapereka miyeso yocheperako yowerengedwa:
Ngati makulidwe a khoma omwe atchulidwa ali pakati pa omwe awonetsedwa pamwambapa, mtengo wocheperako wa kutalika kwa khoma udzatsimikiziridwa motere:
Kalasi 3: E = 32t + 10.00 [E = 1.25t + 10.00]
E: kutalika kwa mainchesi awiri [50.8 mm], %;
t: makulidwe a khoma odziwika bwino, mu. [mm].
Pa kukula kwa mulu wa mapaipi komwe sikunatchulidwe pa tchati cha kulemera kwa mapaipi, kulemera pa unit utali kuyenera kuwerengedwa motere:
W = 10.69(D - t)t [W = 0.0246615(D - t)t ]
W = kulemera pa unit length, lb/ft [kg/m].
D = m'mimba mwake wakunja wotchulidwa, mu. [mm],
t = makulidwe a khoma odziwika bwino, mu. [mm].
Kampani yathu imapereka mitundu yosiyanasiyana ya zokutira kuphatikizapo Utoto, varnish, galvanized, epoxy wolemera mu zinc, 3LPE, epoxy ya malasha, ndi zina zotero kuti ikwaniritse zosowa za mapulojekiti osiyanasiyana ndikuwonetsetsa kuti zimakhala zolimba kwa nthawi yayitali.
Mukamagula A252 Pipe Pile Tubing, mfundo zotsatirazi ziyenera kuperekedwa kuti zithandize wogulitsa kukwaniritsa zosowa zanu molondola ndikuchepetsa kusintha komwe kungachitike komanso kuchedwa komwe kungachitike.
1 Kuchuluka (mapazi kapena chiwerengero cha kutalika),
2 Dzina la zinthu (milu ya mapaipi achitsulo),
Njira 3 zopangira (zopanda msoko kapena zolumikizidwa),
Giredi 4 (1, 2, kapena 3),
5 Kukula (m'mimba mwake kunja ndi makulidwe a khoma),
6 Kutalika (kumodzi mwachisawawa, kawiri mwachisawawa, kapena yunifolomu),
7 Kumaliza,
8 Kusankhidwa kwa ASTM ndi chaka chomwe chaperekedwa.
