TIAB SA 3452yog ib tus qauv Japanese uas qhia txog cov welded carbon steel yeeb nkab rau kev thauj mus los ntawm chav dej, dej, roj, roj, cua, thiab lwm yam ntawm kev ua haujlwm qis.JIS G 3452 tsuas yog ib qib, SGP, uas tuaj yeem tsim los ntawm kev siv vuam tsis kam (ERW) lossis pob tw vuam.
JIS G 3452 Steel kav yuav tsum tau fabricated siv ib tug haum ua ke ntawm cov yeeb nkab manufacturing txoj kev thiab xov txoj kev.
| Cim ntawm qib | Lub cim ntawm kev tsim khoom | Classification ntawm zinc-coating | |
| Kev tsim cov yeeb nkab | Txoj kev ua tiav | ||
| SGP | Hluav taws xob kuj welded: E Lub taub hau welded: B | Kub tiav: H Txias tiav: C Raws li hluav taws xob kuj welded: G | Cov kav dej dub: cov kav dej tsis muab zinc-txheej Cov kav dej dawb: cov kav dej muab zinc-txheej |
Cov kav dej yuav tsum nquag xa tuaj raws li tsim.Cov kav dej txias ua tiav yuav tsum tau muab tshem tawm tom qab kev tsim khoom.
Yog hais tias cov yeeb nkab yog tsim los ntawm ERW, cov welds nyob rau sab hauv thiab sab nraud ntawm cov yeeb nkab yuav tsum tau muab tshem tawm kom tau ib tug du weld raws contour ntawm cov yeeb nkab.
Yog tias txwv vim yog cov yeeb nkab txoj kab uas hla lossis cov khoom siv, thiab lwm yam, cov vuam ntawm lub puab sab hauv yuav tsis raug tshem tawm.
Prep: Ua ntej kub-dip galvanizing, qhov saum npoo ntawm cov yeeb nkab steel yuav tsum tau ntxuav kom huv si los ntawm sandblasting, pickling, thiab lwm yam.
Thickness: Rau zinc-txheej txheej, cov distilled zinc ingot Class 1 teev nyob rau hauv JIS H 2107 los yog zinc nrog tsawg kawg yog zoo sib npaug rau qhov no yuav tsum tau siv.
Lwm yam: Lwm cov kev cai dav dav rau galvanizing yog raws li JIS H 8641.
Kev Ntsuas: Kev ntsuas qhov sib xws ntawm cov txheej txheem galvanized raws li JIS H 0401 Tshooj 6.
Ntxiv nrog rau cov ntsiab lus muab, lwm cov ntsiab lus alloying tuaj yeem ntxiv raws li qhov xav tau.
| Lub cim ntawm qib | P (phosphorus) | S (Sulfur) |
| SGP | max 0.040% | max 0.040% |
JIS G 3452 muaj kev txwv tsawg dua ntawm cov tshuaj muaj pes tsawg leeg vim JIS G 3452 feem ntau yog siv rau kev siv dav dav xws li kev thauj mus los ntawm chav dej, dej, roj, thiab cov nkev.Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov khoom siv tsis yog qhov tseem ceeb tshaj plaws, tab sis theej lub zog ntawm cov yeeb nkab kom tiv taus kev ua haujlwm siab.
Tensile Properties
| Lub cim ntawm qib | Tensile zog | Elongation, min, % | ||||||
| Kuaj daim | Kuaj kev taw qhia | Phab ntsa thickness, mm | ||||||
| N / mm² (MPA) | ＞ 3 ≤ 4 | ＞ 4 ≤ 5 | ＞ 5 ≤ 6 | ＞ 6 ≤ 7 | ＞ 7 | |||
| SGP | 290 nqi | No.11 | Parallel rau cov yeeb nkab axis | 30 | 30 | 30 | 30 | 30 |
| No.12 | Parallel rau cov yeeb nkab axis | 24 | 26 | 27 | 28 | 30 | ||
| No.5 | Perpendicular rau cov yeeb nkab axis | 19 | 20 | 22 | 24 | 25 | ||
Rau cov kav dej ntawm nominal txoj kab uas hla 32A lossis qis dua, qhov elongation qhov tseem ceeb hauv cov lus no tsis siv, txawm hais tias lawv cov txiaj ntsig elongation yuav tsum tau sau tseg.Hauv qhov no, qhov kev xav tau elongation tau pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom tuaj yeem siv.
Flattening Property
Scope: Rau cov raj uas muaj lub taub nominal ntau dua 50A (2B).
Tsis muaj kab nrib pleb thaum lub raj yog flattened rau 2/3 ntawm sab nraud txoj kab uas hla ntawm lub raj.
Kho tau
Scope: Rau steel tubes nrog lub nominal txoj kab uas hla ≤ 50A (2B).
Khoov cov qauv mus rau 90 ° nrog lub vojvoog sab hauv ntawm rau lub sijhawm ntawm txoj kab uas hla sab nraud ntawm cov yeeb nkab yam tsis muaj qhov tawg.
Txhua cov yeeb nkab steel yuav tsum muaj qhov ntsuas hydrostatic siab lossis qhov ntsuas tsis muaj kev puas tsuaj.
Hydrostatic Test
Siab: 2.5 MPa;
Sijhawm: Tuav yam tsawg 5 vib nas this;
Kev txiav txim: steel yeeb nkab nyob rau hauv siab tsis muaj to.
Kev kuaj tsis muaj kev puas tsuaj
Kev ntsuam xyuas ultrasonic tau teev tseg hauv JIS G 0582 yuav tsum siv.Qib xeem yuav hnyav dua li Qib UE.
Qhov kev ntsuam xyuas tam sim no tau teev tseg hauv JIS G 0583 yuav tsum siv.Qib xeem yuav hnyav dua li Qib EZ.
Rau cov kav dej uas muaj nominal diameters ≥ 350A (14B), xam cov kab uas hla los ntawm kev ntsuas qhov ncig, nyob rau hauv rooj plaub no qhov kam rau ua yog ± 0.5%.
Hom yeeb nkab kawg rau DN≤300A / 12B: threaded lossis ca kawg.
Hom yeeb nkab kawg rau DN≤350A / 14B: tiaj tus kawg.
Yog tias tus neeg yuav khoom xav tau qhov kawg beveled, lub kaum sab xis ntawm lub bevel yog 30-35 °, bevel dav ntawm cov yeeb nkab steel ntug: max 2.4mm.
JIS G 3452 muaj qhov sib npaug hauvASTM A53thiabGB/T 3091, thiab cov khoom siv yeeb nkab uas tau teev tseg hauv cov qauv no tuaj yeem suav tias yog sib npaug sib npaug ntawm kev ua haujlwm thiab kev siv.
Txij li thaum nws tsim nyob rau hauv 2014, Botop Steel tau dhau los ua tus xa khoom ntawm carbon steel yeeb nkab nyob rau sab qaum teb Tuam Tshoj, paub txog kev pabcuam zoo, cov khoom zoo, thiab cov kev daws teeb meem.
Lub tuam txhab muaj ntau yam carbon steel kav thiab lwm yam khoom, xws li seamless, ERW, LSAW, thiab SSAW steel yeeb nkab, raws li zoo raws li ib tug tag nrho lineup ntawm cov yeeb nkab fittings thiab flanges.Nws cov khoom tshwj xeeb kuj suav nrog cov qib high-qib alloys thiab austenitic stainless hlau, tsim kom tau raws li qhov xav tau ntawm ntau yam kev siv kav dej.
Tiv tauj peb, pab neeg tshaj lij tau npaj los muab cov kev pabcuam zoo thiab cov kev daws teeb meem rau koj, tos ntsoov kom ncav cuag kev koom tes zoo nrog koj, thiab koom tes qhib tshooj tshiab ntawm kev vam meej.
