ASTM A252umuyoboro wibyuma nibintu bisanzwe bya silindrike yibirundo bitwikiriye ubwoko bwasuditswe kandi butagira ikizinga kubirundo byicyuma aho silinderi yicyuma ikoreshwa nkumunyamuryango uhoraho utwara imizigo cyangwa nkigikonoshwa kugirango ikore ikirundo cya beto.
Icyiciro cya 3ni urwego rwohejuru rwo hejuru mubyiciro bitatu bya A252, hamwe byibuzegutanga umusaruro wa 310MPa [45,000 psi]na byibuzeimbaraga zingana za 455MPa [66.000 psi].Ugereranije nandi manota, Icyiciro cya 3 kirakwiriye cyane kubikorwa byubatswe imitwaro iremereye cyangwa ahantu hasabwa cyane, kandi akenshi bikoreshwa mukubaka urufatiro rwikiraro kinini, inyubako ndende, cyangwa urubuga rwo hanze.
A252 igabanijwemo ibyiciro bitatu kugirango ihangane nibidukikije bitandukanye.
Icyiciro cya 1,Icyiciro cya 2, naIcyiciro cya 3.
Kwiyongera buhoro buhoro mumiterere yubukanishi.
Icyiciro cya 1ikoreshwa cyane mubikorwa aho ubwiza bwubutaka ari bwiza kandi ibisabwa gutwara imitwaro ntabwo biri hejuru cyane.Ingero zirimo urufatiro rworoheje rwubatswe ku nyubako zo guturamo cyangwa iz'ubucuruzi, cyangwa ibiraro bito bidasaba imitwaro ihambaye.
Icyiciro cya 2irakwiriye gukoreshwa hamwe nubutaka bubi cyangwa ibisabwa byinshi-bitwara imitwaro.Kurugero, ibiraro bipakiye mu rugero, inyubako nini zubucuruzi, cyangwa ibikorwa remezo byibikorwa rusange.Irashobora kandi gukoreshwa mubice bifite ameza maremare y'amazi, nk'inzuzi n'ibiyaga, aho bisabwa kurwanya imbaraga zo guhindura ibintu.
Icyiciro cya 3ikoreshwa mubisabwa-imirimo iremereye mubihe bikabije, nkibiraro binini, urufatiro rwibikoresho biremereye, cyangwa imirimo yimbitse yinyubako ndende.Mubyongeyeho, kubihe bidasanzwe bya geologiya, nkubutaka bworoshye cyane cyangwa butajegajega, Icyiciro cya 3 gitanga ubushobozi bwo gutwara ibintu byinshi kandi bihamye.
Yashinzwe mu 2014,Botop Steelni isoko rya mbere mu gutanga imiyoboro ya karubone mu majyaruguru y’Ubushinwa, izwiho gukora imiyoboro yo mu rwego rwo hejuru isudira kandi idafite icyuma.
Ibicuruzwa byacu byose byujuje ubuziranenge ASTM A252, byemeza imikorere myiza mubihe bikabije.
Turatanga kandi urutonde rwuzuye rwa fitingi na flanges kugirango duhuze ibikenewe mumishinga itandukanye.
Iyo uhisemo Botop Steel, uhitamo kuba indashyikirwa no kwizerwa.
Imiyoboro ya ASTM A252 irashobora gushyirwa mubice bibiri byingenzi byo gukora:idafite ikizinga.
Mubikorwa byo gusudira, birashobora kugabanywamo kabiriERW, EFW, naSAW.
SAW irashobora gushyirwa mubiceLSAW(SAWL) naSSAW(HSAW) ukurikije icyerekezo cya weld.
Kuberako SAW isanzwe isudwa hakoreshejwe uburyo bubiri bwo kurenga arc gusudira arc, nabo bakunze kwitaDSAW.
Ubu buryo butandukanye bwo gukora butuma ASTM A252 umuyoboro wikirundo uhuza ibyifuzo bitandukanye byubwubatsi.
Ibikurikira nigishushanyo mbonera cyerekana umusaruro wicyuma kizunguruka (SSAW):
Umuyoboro w'icyuma SSAWnibyiza mugukora umuyoboro munini wa diameter nini kandi ushobora kubyara diametero zigera kuri 3.500mm.Ntibishobora gusa gukorwa muburebure burebure cyane, nibyiza kubikorwa binini, ariko umuyoboro wibyuma bya SSAW nawo uhendutse ugereranije numuyoboro wibyuma bya LSAW na SMLS.
Botop Steel irashobora gutanga ingano ikurikira yingero zicyuma:
Ibirimo fosifore ntibirenza 0.050%.
Ibikoresho bya chimique bisabwa kuri ASTM A252 biroroshye ugereranije nibindi bipimo byindi miyoboro kuko iyo umuyoboro ukoreshwa nkikirundo cyumuyoboro, uba wubatswe muburyo bwa kamere.Birahagije ko umuyoboro wibyuma ushobora kwihanganira imizigo ikenewe hamwe nibidukikije.Iyi chimie yoroshye ifasha guhuza ibiciro numusaruro mugihe uhuza ibikenewe byumutekano wuburyo burambye.
AImbonerahamwe 2 itanga agaciro ntarengwa kabaruwe:
Iyo uburebure bwurukuta rwerekanwe buri hagati yerekanwa hejuru, agaciro ntarengwa ko kuramba kugenwa gutya:
Icyiciro cya 3: E = 32t + 10.00 [E = 1.25t + 10.00]
E: kurambura muri 2 muri. [50.8 mm],%;
t: byerekanwe urukuta rw'izina, muri. [mm].
Ingano y'ibirundo by'imiyoboro itashyizwe ku mbonerahamwe y'uburemere bwa pipe, uburemere kuri buri burebure bugomba kubarwa ku buryo bukurikira:
W = 10.69 (D - t) t [W = 0.0246615 (D - t) t]
W = uburemere kuri buri burebure, lb / ft [kg / m].
D = yerekanwe hanze ya diameter, muri. [Mm],
t = uburebure bwurukuta rwizina, muri. [mm].
Isosiyete yacu itanga impuzu zitandukanye zirimo Paint, varish, galvanised, epoxy ikungahaye kuri zinc, 3LPE, epoxy yamakara, nibindi kugirango bikemure imishinga itandukanye kandi ireme igihe kirekire.
Mugihe ugura A252 Umuyoboro wikirundo, amakuru akurikira agomba gutangwa kugirango byorohereze ubushobozi bwabatanga isoko kugirango bahuze neza ibyo ukeneye kandi bagabanye ibyahinduwe nyuma nibishobora gutinda.
1 Umubare (ibirenge cyangwa umubare w'uburebure),
2 Izina ryibikoresho (ibirundo byicyuma),
3 Uburyo bwo gukora (butagira kashe cyangwa busudira),
Icyiciro cya 4 (1, 2, cyangwa 3),
5 Ingano (diameter yo hanze n'uburebure bw'urukuta rw'izina),
6 Uburebure (icyarimwe, inshuro ebyiri, cyangwa kimwe),
7 Kurangiza,
8 Ibisobanuro bya ASTM n'umwaka watangiwe.
