ASTM A53 ERWchitsulo chitoliro ndiMtundu Emu mafotokozedwe a A53, opangidwa ndi njira yowotcherera yokana, ndipo amapezeka m'magiredi A ndi Gulu B.
Imagwiritsidwa ntchito pamakina ndi kukakamiza ndipo imagwiritsidwanso ntchito ngati cholinga chambiri potumiza nthunzi, madzi, gasi, ndi mpweya.
Ubwino wa ERW zitsulo chitoliro, mongamtengo wotsikandizokolola zambiri, ipangitseni kukhala chinthu chosankha pazinthu zambiri zamafakitale.
Botop Steelndi apamwamba welded mpweya zitsulo chitoliro wopanga ndi katundu kuchokera China, komanso msokonezo zitsulo chitoliro stockist, kukupatsani osiyanasiyana zitsulo chitoliro njira!
Zolemba zathu zili ndi katundu wambiri ndipo timatha kukwaniritsa zofuna za makasitomala athu pamitundu yosiyanasiyana komanso kuchuluka kwake.
ASTM A53/A53M imaphatikizapo mitundu iyi ndi magiredi:
Mtundu E: Magetsi-kukana-welded, Magiredi A ndi B.
Mtundu S: Zosasinthika, Magiredi A ndi B.
Mtundu F: Zowotcherera m'ng'anjo, zowotcherera mosalekeza Magiredi A ndi B.
Mtundu EndiMtundu Sndi mitundu iwiri yomwe imagwiritsidwa ntchito kwambiri.Motsutsana,Mtundu Fnthawi zambiri amagwiritsidwa ntchito ngati machubu ang'onoang'ono awiri.Chifukwa cha kupita patsogolo kwaukadaulo wowotcherera, njira yopangira iyi imagwiritsidwa ntchito pafupipafupi.
Mwadzina Diameters: DN 6 - 650 [NPS 1/8 - 26];
Akunja Diameter: 10.3 - 660 mm [0,405 - 26 mkati];
Makulidwe a khoma ndi ma chart achitsulo a chitoliro cholemera:
Machubu omaliza atha kuwonedwa mu Table X2.2;
Machubu opangidwa ndi ulusi komanso ophatikizidwa amatha kuwonedwa mu Table X2.3.
ASTM A53 imalolanso kuperekedwa kwa chitoliro ndi miyeso ina pokhapokha chitolirocho chikukwaniritsa zofunikira zina zonse zamtunduwu.
ERWchimagwiritsidwa ntchito popanga kuzungulira, masikweya, ndi amakona anayi mpweya ndi otsika aloyi zitsulo mapaipi.
Zotsatirazi ndizomwe zimapangidwira kupangakuzungulira ERW chitsulo chitoliro:
a) Kukonzekera zinthu: Zomwe zimayambira nthawi zambiri zimakhala zokometsera zachitsulo zotentha.Makholewa amayamba kuphwanyidwa ndikumetedwa m'lifupi mwake.
b) Kupanga: Pang'onopang'ono, kupyolera mu mipukutu yambiri, mzerewu umapangidwa kukhala mawonekedwe otseguka ozungulira.Panthawi imeneyi, m'mphepete mwa mzerewo umayandikira pafupi pokonzekera kuwotcherera.
c) kuwotcherera: Pambuyo popanga mapangidwe a tubular, m'mphepete mwazitsulo zachitsulo zimatenthedwa ndi kukana kwamagetsi kumalo otsekemera.Kuthamanga kwapamwamba kwambiri kumadutsa muzinthuzo, ndipo kutentha komwe kumapangidwa ndi kukana kumagwiritsidwa ntchito kutenthetsa m'mphepete mpaka kumalo osungunuka, ndiyeno amawotchedwa pamodzi ndi kukakamizidwa.
d) Kutaya ndalama: Pambuyo kuwotcherera, weld burrs (zitsulo zochulukirapo kuchokera ku kuwotcherera) zimachotsedwa mkati ndi kunja kwa chitoliro kuti zitsimikizire kuti mkati mwa chitoliro pali malo osalala.
e) Kuyika makulidwe ndi kutalika: Pambuyo kuwotcherera ndi kuwotcherera kumalizidwa, machubu amadutsa pamakina oyesa kuti awongolere mawonekedwe kuti atsimikizire kuti akukwaniritsa zofunikira zenizeni komanso zozungulira.Machubuwo amadulidwa mpaka kutalika kwake komwe anaikiratu.
f) Kuyang'ana ndi kuyezetsa: Chitoliro chachitsulo chidzayesedwa ndi kuyang'anitsitsa, kuphatikizapo kuyesa kwa akupanga, kuyesa kwa hydrostatic, ndi zina zotero, kuonetsetsa kuti chitoliro chachitsulo chikugwirizana ndi miyezo ndi ndondomeko.
g) Chithandizo chapamwamba: Potsirizira pake, chitoliro chachitsulo chikhoza kuthandizidwa ndi mankhwala ena monga kutentha kwa dip galvanizing, kujambula, kapena mankhwala ena apamwamba kuti apereke chitetezo chowonjezera cha dzimbiri ndi kukongola.
Ma welds mu Type E kapena Type F Grade Bchitoliro chiyenera kutenthedwa kapena kuchiritsidwa mwanjira ina pambuyo pa kuwotcherera kuti martensite osasunthika asakhalepo.
Kutentha kwamankhwala kutentha kuzikhala osachepera1000°F [540°C].
Pamene chitoliro ndi ozizira kukodzedwa, kukulitsa sadzapitirira1.5%wa m'mimba mwake wakunja kwa chitoliro.
AZinthu zisanuCu, Ni, Cr, Mo,ndiVpamodzi sayenera kupitirira 1.00%.
BPakuchepetsa kulikonse kwa 0.01% pansi pa mulingo wa carbon womwe watchulidwa, kuwonjezeka kwa 0.06 % ya manganese pamwamba pa mlingo womwe watchulidwa kudzaloledwa kufika pa 1.35%.
CPakuchepetsa kulikonse kwa 0.01% pansi pa mpweya wotchulidwawo, kuwonjezeka kwa 0.06% ya manganese pamwamba pa mlingo womwe watchulidwa kudzaloledwa kufika pa 1.65%.
Tensile Property
| Mndandanda | Gulu | Gulu A | Gulu B |
| Mphamvu zolimba, min | MPa [psi] | 330 [48,000] | 415 [60,000] |
| Mphamvu zokolola, min | MPa [psi] | 205 [30,000] | 240 [35,000] |
| Elongation mu 50 mm [2 in.] | Zindikirani | A,B | A,B |
Onani A: Kutalika kocheperako mu 2 mu[50 mm] kudzakhala komwe kutsimikiziridwa ndi equation iyi:
e = 625,000 [1940] A0.2/U0.9
e = kutalika kochepa mu 2 mu kapena 50 mm mu peresenti, yozungulira mpaka peresenti yapafupi
A = kuchepera kwa 0.75 in2[500 mm2] ndi gawo lagawo lachitsanzo choyezetsa kupanikizika, kuwerengeredwa pogwiritsa ntchito mawonekedwe akunja a chitoliro, kapena m'lifupi mwadzina lachitsanzo choyezera kukanikizako ndi makulidwe ake a khoma la chitoliro, ndi mtengo wowerengeka wozungulira pafupi ndi 0.01 mu2 [1 mm2].
U=yodziwika mphamvu yocheperako, psi [MPa].
Zindikirani B: Onani Table X4.1 kapena Table X4.2, zilizonse zomwe zingagwiritsidwe ntchito, pamiyezo yocheperako yomwe imafunikira kuti muphatikizire mitundu yosiyanasiyana yachitsanzo cha tension test ndi mphamvu yocheperako.
Bend Test
Kwa chitoliro cha DN ≤ 50 [NPS ≤ 2], kutalika kokwanira kwa chitoliro kudzatha kuzizira mpaka 90 ° kuzungulira cylindrical mandrel, m'mimba mwake yomwe imakhala nthawi khumi ndi ziwiri kuposa momwe idatchulidwira kunja kwa chitoliro, popanda kupanga ming'alu. gawo lililonse komanso osatsegula chowotcherera.
Pawiri-owonjezera-amphamvu(kalasi yolemetsa:XXS) chitoliro chodutsa DN 32 [NPS 1 1/4] sichiyenera kuyesedwa.
Mayeso a Flattening
Mayeso a flatten apangidwa pa chitoliro chowotcherera pamwamba pa DN 50 mu kulemera kwamphamvu (XS) kapena kupepuka.
Zoyenera Mtundu E, Gulu A ndi B;ndi Type F, Grade B machubu.
Machubu achitsulo opanda msoko sakuyenera kuyesedwa.
Nthawi Yoyesera
Pamapaipi onse a Type S, Type E, ndi Type F Grade B, kukakamiza koyeserera kumasungidwa osachepera ma 5s.
Mayeso a hydrostatic adzagwiritsidwa ntchito, popanda kutayikira kudzera mumsoko wowotcherera kapena thupi la chitoliro.
Kupanikizika kwa Mayesero
Chitoliro chopanda malireadzayesedwa ndi hydrostatic kukakamiza komwe kuperekedwaGulu X2.2,
Chitoliro cha ulusi-ndi-wophatikizanaadzayesedwa ndi hydrostatic kukakamiza komwe kuperekedwaGulu X2.3.
Kwa mapaipi achitsulo omwe ali ndi DN ≤ 80 [NPS ≤ 80], kuthamanga kwa mayeso sikudutsa 17.2MPa;
Kwa mapaipi achitsulo okhala ndi DN＞80 [NPS＞80], kupanikizika kwa mayeso sikudutsa 19.3MPa;
Kupanikizika kwakukulu koyesera kungasankhidwe ngati pali zofunikira zapadera zaumisiri, koma izi zimafuna kukambirana pakati pa wopanga ndi kasitomala.
Kuyika chizindikiro
Ngati chitolirocho chinayesedwa ndi hydrostatic, chizindikirocho chiyenera kusonyezamayeso kuthamanga.
Zofunikira zotsatirazi zikugwira ntchito ku Type E ndi Type F Grade B Pipe.
Chitoliro chosasunthika chili ndi zofunikira zina zomwe sizinakambidwe mu chikalatachi.
Njira Zoyesera
Mapaipi opangidwa ndi makina osawotcha osatambasula komanso odulira: DN ≥ 50 [NPS ≥ 2], ndizowotchereramu gawo lililonse la chitoliro ayenera kupititsa mayeso osawononga magetsi, ndipo njira yoyesera iyenera kukhala yogwirizana ndiE213, E273, E309 kapena E570muyezo.
Mapaipi a ERW opangidwa ndi makina otentha ochepetsa m'mimba mwakeDN ≥ 50 [NPS ≥ 2]Gawo lirilonseChitolirocho chidzawunikiridwa kwathunthu ndi kuyesa kwamagetsi kosawononga, komwe kuzikhala molingana ndiE213, E309, paE570miyezo.
Chidziwitso: Makina Owonjezera Owonjezera Otentha Otentha ndi makina omwe amatambasula mosalekeza ndikufinya machubu achitsulo ndi odzigudubuza pa kutentha kwakukulu kuti asinthe ma diameter awo ndi makulidwe awo.
Kuyika chizindikiro
Ngati chubuyo yakhala ikuyesedwa kopanda kuwonongeka, m'pofunika kusonyezaNDIpa chizindikiro.
Misa
± 10%.
Chitoliro DN ≤ 100 [NPS ≤ 4], yolemera ngati batch.
Mipope DN> 100 [NPS> 4], yolemera mu zidutswa zing'onozing'ono.
Diameter
Kwa chitoliro cha DN ≤40 [NPS≤ 1 1/2], kusiyana kwa OD sikudutsa ± 0.4 mm [1/64 mu.].
Kwa chitoliro cha DN ≥50 [NPS>2], kusintha kwa OD sikudutsa ± 1%.
Makulidwe
Makulidwe ochepa a khoma asakhale ochepa kuposa87.5%wa makulidwe a khoma lotchulidwa.
chopepuka kuposa kulemera kwamphamvu (XS).:
a) chitoliro chopanda malire: 3.66 - 4.88m [12 - 16 ft], Osapitirira 5% ya chiwerengero chonse.
b) kutalika kwapawiri: ≥ 6.71 m [22 ft], Osachepera kutalika kwa 10.67m [35 ft].
c) kutalika kwachisawawa: 4.88 -6.71m [16 - 22 ft], osapitirira 5 % ya ulusi wonse wa ulusi wopangidwa kukhala zolumikizira (zidutswa ziwiri zophatikizidwa).
Kulemera kwambiri (XS) kapena kulemera kwambiri: 3.66-6.71 mamita [12 - 22 ft], osapitirira 5% okwana chitoliro 1.83 - 3.66 m [6 - 12 ft].
Kwa chitoliro chachitsulo cha ASTM A53 chimapezeka mwakuda kapena malata.
Wakuda: Machubu achitsulo popanda chithandizo chilichonse chapamwamba, nthawi zambiri amagulitsidwa mwachindunji pambuyo popanga, pazogwiritsa ntchito pomwe palibe kukana kwa dzimbiri komwe kumafunikira.
Mipope ya malata iyenera kukwaniritsa zofunikira.
Njira
Zinc iyenera kuphimbidwa mkati ndi kunja ndi ndondomeko yotsekemera yotentha.
Zopangira
Zinc yomwe imagwiritsidwa ntchito popaka idzakhala giredi iliyonse ya zinki mogwirizana ndi zofunikira za KufotokozeraChithunzi cha ASTM B6.
Maonekedwe
Chitoliro cha galvanized chizikhala chopanda madera osakutidwa, tovuvu la mpweya, ma depositi otuluka, ndi ma coarse slag inclusions.Ziphuphu, zotupa, ma globules, kapena kuchuluka kwa zinki zomwe zimasokoneza kugwiritsa ntchito zomwe akufuna sizidzaloledwa.
Galvanized Coating Weight
Idzatsimikiziridwa ndi kuyesa kwa peel molingana ndi njira yoyesera ASTM A90.
Kulemera kwa zokutira sikuyenera kuchepera 0.55 kg/m² [1.8 oz/ft²].
ASTM A53 ERW chitoliro chachitsulonthawi zambiri amagwiritsidwa ntchito pamagetsi otsika mpaka apakatikati monga uinjiniya wamatauni, zomangamanga, ndi mapaipi amakina.Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo kutumiza madzi, nthunzi, mpweya, ndi zakumwa zina zotsika kwambiri.
Ndi kuwotcherera kwabwino, ndizoyenera kupanga maopareshoni ophatikiza kupindika, kupindika, ndi kupindika.
