ASTM A252 ni igipimo ngenderwaho cyakozwe by'umwihariko kugira ngo gikoreshwe mu miyoboro y'icyuma gifata imiyoboro.
ASTM A252 ikoreshwa ku miyoboro y'imiyoboro aho silinda y'icyuma ikora nk'igice gihoraho gitwara imizigo, cyangwa nk'igikonoshwa cyo gukora imiyoboro ya sima ikozwe mu mwanya wayo.
Icyiciro cya 2 n'icya 3 ni bibiri muri ibyo byiciro.
A252 igabanyijemo ibice bitatu bifite imiterere ya tekiniki yongereweho.
Bari: Icyiciro cya 1, Icyiciro cya 2, naIcyiciro cya 3.
Icyiciro cya 2 n'icya 3 ni byo bikunze gukoreshwa muri ASTM A252, kandi tuzasobanura imiterere y'ibyo byiciro byombi mu buryo burambuye.
ASTM A252bishobora gukorwa hakoreshejwe uburyo bwo gusudira budafite imigozi, uburinzi, gusudira bukoresheje flash, cyangwa uburyo bwo gusudira bukoresheje fusion.
Mu miyoboro ikoreshwa mu gucukura imiyoboro, imiyoboro y'icyuma idakora neza itanga ubufasha bwiza bitewe n'imbaraga zayo nyinshi n'ubushobozi bwayo bumwe.
Byongeye kandi, imiyoboro y'icyuma idakora neza ishobora gukorwa ifite ubugari bunini cyane bw'inkuta, ibi bikabafasha kwihanganira imihangayiko ikomeye, bikongera uburyo bwo kuyishyigikira mu buryo bwizewe.
Ariko, imiyoboro y'icyuma idakora neza ishobora gukorwa ifite umurambararo ntarengwa wa mm 660, ibi bikaba bigabanya ikoreshwa ryayo mu bikorwa bisaba imirundo minini y'umurambararo. Muri iki gihe,LSAW(Longitudinal Submerged Arc Welded) naSSAWImiyoboro y'icyuma (Spiral Submerged Arc Welded) ifite akamaro kanini.
Igipimo cya fosifore ntikigomba kurenga 0.050%.
Nta bindi bintu bisabwa.
Imbaraga zo Gukomera n'Imbaraga zo Kuzamuka cyangwa Aho Kuzamuka
| Icyiciro cya 2 | Icyiciro cya 3 | |
| Ingufu zo gukurura, nibura | 60000 psi[415 MPa] | 60000 psi[415 MPa] |
| Ingufu z'umusaruro cyangwa imbaraga z'umusaruro, nibura | 35000 psi[240 MPa] | 45000 psi[310 MPa] |
Kurekura
Ibisobanuro byihariye biboneka muriIbisobanuro by'umuyoboro wa ASTM A252.
| Urutonde | Tondeka | Aho biherereye |
| Uburemere | Uburemere bw'imitekerereze | 95% - 125% |
| Ingano yo hanze | Ingano y'inyuma yagenwe | ± 1% |
| Ubunini bw'urukuta | ubunini bw'urukuta bw'izina ryagenwe | nibura 87.5% |
| Uburebure bumwe butunguranye | Santimetero 4.88 kugeza 7.62, santimetero |
| Uburebure bubiri butunguranye | metero 7.62 z'uburebure, nibura metero 10.67 z'uburebure |
| Uburebure bungana | uburebure nk'uko byagaragajwe hamwe n'impinduka zemewe za ± 1 in. |
ASTM A370: Uburyo bwo gupima n'ibisobanuro byo gupima ibikoresho by'icyuma hakoreshejwe ikoranabuhanga;
ASTM A751: Uburyo bwo gupima, imikorere, n'amagambo yo gusesengura imiti y'ibicuruzwa by'icyuma;
ASTM A941: Amagambo ajyanye n'icyuma, icyuma kitagira umugese, alloys zijyanye nacyo, na Ferroalloys;
ASTM E29: Imyitozo yo gukoresha imibare ikomeye mu makuru y'ikizamini kugira ngo hamenyekane ijyanye n'ibisobanuro;
Botop Steel ni uruganda rukora imiyoboro ya karuboni ikoze mu byuma bya karuboni rwo mu Bushinwa, rukaba kandi rutanga imiyoboro y'ibyuma idafite umugozi, ruguha ibisubizo bitandukanye by'imiyoboro y'ibyuma!
Umuyoboro w'icyuma cya karuboni wa ASTM A252 GR.3 LSAW (JCOE) wubatswe mu nyubako
