Steel Qib ntawm JIS G3452
SGP
CLASSIFICATION THIAB SYMBOL ntawm JIS G3452 PIPE
JIS G3452 cov kav dej yuav tsum tau muab faib ua ib qib, nrog nws cov ntawv cim raws li qhia hauv cov lus hauv qab no, thiab sib cais ntxiv rau hauv cov kav dej dub thiab cov kav dej galvanized raws li qhov muaj lossis tsis muaj zinc-coated coatings nyob rau sab nraud ntawm cov yeeb nkab.
DIMENSIONS, NYIAJ THIAB DIMENSIONAL TOLERANCES ntawm JIS G3452 Pipes
| JIS G3452 Dimensions, Nyhav thiab Dimensional Tolerances | |||||||
| Nominal Dia |
O.D. mm |
OD Tolerances |
W.T. mm |
WT Kev Ua Haujlwm Zoo |
Unit Mass excluding Socket kg/m |
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| A | B | Pipes yuav tsum tau txiav nyob rau hauv taper thread | Lwm cov kav dej | ||||
| 6 | 1/8 | 10.5 | ± 0.5 hli | ± 0.5 hli | 2 |
+ Tsis tau teev tseg -12.50% |
0.419 |
| 8 | 1/4 | 13.8 | ± 0.5 hli | ± 0.5 hli | 2.3 | 0.652 | |
| 10 | 3/8 | 17.3 | ± 0.5 hli | ± 0.5 hli | 2.3 | 0.851 | |
| 15 | 1/2 | 21.7 | ± 0.5 hli | ± 0.5 hli | 2.8 | 1.31 | |
| 20 | 3/4 | 27.2 | ± 0.5 hli | ± 0.5 hli | 2.8 | 1.68 | |
| 25 | 1 | 34 | ± 0.5 hli | ± 0.5 hli | 3.2 | 2.43 | |
| 32 | 1 1/4 | 42.7 | ± 0.5 hli | ± 0.5 hli | 3.5 | 3.38 | |
| 40 | 1 1/2 | 48.6 | ± 0.5 hli | ± 0.5 hli | 3.5 | 3.89 | |
| 50 | 2 | 60.5 | ± 0.5 hli | ±1% | 3.8 | 5.31 | |
| 65 | 2 1/2 | 76.3 | ± 0.7 hli | ±1% | 4.2 | 7.47 | |
| 80 | 3 | 89.1 | ± 0.8 hli | ±1% | 4.2 | 8.79 | |
| 90 | 3 1/2 | 101.6 | ± 0.8 hli | ±1% | 4.2 | 10.1 | |
| 100 | 4 | 114.3 | ± 0.8 hli | ±1% | 4.5 | 12.2 | |
| 125 | 5 | 139.8 | ± 0.8 hli | ±1% | 4.5 | 15 | |
| 150 | 6 | 165.2 | ± 0.8 hli | ± 1.6 hli | 5 | 19.8 | |
| 175 | 7 | 190.7 | ± 0.9 hli | ± 1.6 hli | 5.3 | 24.2 | |
| 200 | 8 | 216.3 | ± 1.0 hli | ±0.8% | 5.8 | 30.1 | |
| 225 | 9 | 241.8 | ± 1.2 hli | ±0.8% | 6.2 | 36 | |
| 250 | 10 | 267.4 | ± 1.3 hli | ±0.8% | 6.6 | 42.4 | |
| 300 | 12 | 318.5 | ± 1.5 hli | ±0.8% | 6.9 | 53 | |
| 350 | 14 | 355.6 | – | ±0.8% | 7.9 | 67.7 | |
| 400 | 16 | 406.4 | – | ±0.8% | 7.9 | 77.6 | |
| 450 | 18 | 457.2 | – | ±0.8% | 7.9 | 87.5 | |
| 500 | 20 | 508 | – | ±0.8% | 7.9 | 97.4 | |
CHEMICAL COMPOSITION NTAWM JIS G3452 PIPE
| Qib Steel | P | S |
| SGP | 0.040 max. | 0.040 max. |
MECHANICAL PROPERTIES NTAWM JIS G3452 PIPE
Nco tseg:
• Thaum qhov ntsuas Tensile tau ua tiav ntawm No. 12 lossis Tsis yog . 5 kuaj daim rau cov yeeb nkab nrog phab ntsa thickness tsawg dua 8 hli, qhov tsawg kawg nkaus tus nqi ntawm elongation yuav tsum tau rho tawm 1.5 feem pua ntawm cov nqi ntawm elongation muab rau hauv Table 3-1 rau txhua 1 hli txo ntawm phab ntsa thickness thiab rounding tawm mus rau ib tug integer ntawm J0, qhov tsawg kawg nkaus tus nqi yuav tsum tau muab los ntawm J0. tau los ntawm kev rho tawm 1.5 feem pua ntawm cov txiaj ntsig ntawm elongation Hauv Cov Lus Qhia, koj tuaj yeem pom cov piv txwv ntawm kev suav.
• Cov txiaj ntsig elongation qhia nyob rau hauv lub rooj tsis muaj feem xyuam rau cov kav dej uas muaj qhov loj me ntawm 32 A lossis tsawg dua, raws li tau teev tseg hauv lub rooj. Tus nqi ntawm elongation, ntawm qhov tod tes, yuav tsum tau sau tseg.
• Yog tias cov khoom kuaj tensile raug coj mus kuaj, No. 12 thiab No. 5 cov khoom xeem yuav tsum tau txais los ntawm thaj tsam ntawm cov khoom uas tsis muaj welded seams.
Kev tsim khoom ntawm JIS G3452 PIPE
• Raws li JIS G3452, cov kav dej yuav tsum tau tsim los ntawm hluav taws xob tsis kam vuam lossis pob tw vuam. Cov yeeb nkab yuav tsum tau xa raws li kev tsim khoom. Txawm li cas los xij, qhov txias - cov kav dej tiav yuav tsum tau muab tshem tawm tom qab kev tsim khoom. Qhov no yog ua los txo cov kev ntxhov siab uas tau tsim thaum lub sijhawm tsim khoom thiab txhim kho cov yeeb nkab ductility thiab toughness.
• Tus qauv rau ob qhov kawg ntawm cov kav dej yog tias lawv yuav tsum yog threaded los yog dawb - tas. Cov kav dej ntawm nominal txoj kab uas hla 350A lossis tshaj yuav tsum muaj qhov xaus, thaum cov 300A lossis qis dua tuaj yeem muaj ob hom kawg. Thaum tus neeg yuav khoom qhia, cov kav dej yuav raug txiav txim nrog beveled xaus xwb. Cov duab ntawm lub bevel yuav tsum tau pom zoo los ntawm tus neeg yuav khoom thiab cov chaw tsim khoom, tab sis tsis pom zoo li no, nws yuav tsum ua raws li cov duab hauv qab no.
• JIS B 0203 piav qhia txog cov qauv rau cov xov taper ntawm cov kav hlau. Taper threads teev nyob rau hauv JIS B 0203 yuav tsum tau siv rau ntawm ob kawg ntawm cov yeeb nkab, thiab ib lub qhov (socket) raws li tau piav nyob rau hauv JIS B 2301 los yog JIS B 2302 yuav tsum tau screwed rau hauv ib kawg ntawm cov xov. Lwm qhov kawg ntawm cov yeeb nkab, uas yuav tsis muaj lub qhov (socket) ntsia hlau rau hauv nws, yuav tsum muab cov xov- tiv thaiv lub nplhaib lossis tiv thaiv los ntawm lwm txoj kev tsim nyog. Yog tias tus neeg yuav khoom paub meej, cov yeeb nkab threaded tuaj yeem xa tawm nrog lub qhov (socket). Cov xov taper yuav tsum raug tshuaj xyuas los ntawm JIS B 0253 ua ntej siv.
• Ua ntej cov kav dej thiab lub qhov (sockets) threaded, lawv zinc-coated. Yog tias qhov kev tshuaj xyuas dhau mus, cov kav dej thiab lub qhov hluav taws xob yuav tsum tau ntxuav los ntawm sandblasting, pickling, thiab lwm yam, ces kub dip galvanized. Cov zinc siv yuav tsum tau distilled zinc ingot Class 1 teev nyob rau hauv JIS H 2107 los yog tsawg kawg yog sib npaug. Lwm yam tseem ceeb ntawm zinc- txheej yuav tsum yog los ntawm JIS H 8641. Zinc txheej tiv thaiv cov hlau los ntawm corrosion thiab ua rau nws kav ntev dua. Nws yog ib qho tseem ceeb nyob rau hauv qhov chaw uas cov kav dej thiab lub qhov hluav taws xob raug cov dej noo los yog tshuaj lom neeg.
REFERENCE TABLE NTAWM JIS G3452 PIPE
Rau Cov No. 12 Daim Ntawv Xeem (Longitudinal) thiab Tsis yog. 5 Daim Ntawv Xeem (Transverse), tau los ntawm cov kav dej nrog cov phab ntsa thickness tsawg dua 8 hli, cov piv txwv ntawm cov nqi elongation suav tau pom.
| Cov duab ntawm Test Piece | Elongation Values rau Phab Ntsa Thickness Division (%) | ||||
| 7mm-8 hli | 6mm-7 hli | 5mm-6 hli | 5mm-4 hli | 4mm-3 hli | |
| Tsis muaj . 12 daim ntawv xeem | 30 | 28 | 27 | 26 | 24 |
| Tsis muaj . 5 daim ntawv xeem | 25 | 24 | 22 | 20 | 19 |
Kuaj thiab tshuaj xyuas ntawm JIS G3452 PIPE
- Tshuaj ntsuam xyuas
Analytical Chemistry Raws li JIS G 0303, cov ncauj lus dav dav rau kev tshuaj xyuas tshuaj, nrog rau cov txheej txheem ntawm cov qauv coj mus kuaj, yuav tsum ua raws.
Ib tug txheej txheem ntawm kev soj ntsuam raws li ib tug ntawm cov nram qab no Standards yuav tsum tau siv: Analytical Method
JIS G 1214, JIS G 1215, JIS G 1253, JIS G 1256, thiab JIS G 1257 cov qauv yog cov qauv siv dav tshaj plaws hauv ntiaj teb.
- Tensile Test
Ib daim ntawm kev xeem tshwj tsis yog muaj lwm yam qhia hauv JIS Z 2201, cov qauv kuaj yuav tsum yog ib daim ntawv xeem uas tau xaiv los ntawm tus lej 11, 12, A, 12, B, 12, C, lossis Tsis yog . 5 raws li tau hais tseg hauv JIS Z 2201 thiab yuav tsum tau coj mus kuaj los ntawm cov yeeb nkab.
- Hydrostatic Test lossis Nondestructive Test
Kev ntsuam xyuas ntawm cov yeeb nkab dub yuav tsum tau ua, thiab cov yam ntxwv hydrostatic lossis tsis muaj kev puas tsuaj uas tau txais yuav tsum ua raws li ob qho kev cai hauv qab no. Qhov kev txiav txim siab no yuav raug tso rau qhov tshwj xeeb ntawm tus neeg yuav khoom lossis kev txiav txim siab ntawm cov chaw tsim khoom, nyob ntawm seb tus neeg tsim khoom nyiam qhov twg.
- Kev xeem Flattening
Test piece ib lub xeem 50 mm los yog tshaj nyob rau hauv ntev yuav tsum tau txiav tawm ntawm qhov kawg ntawm ib tug yeeb nkab.
DIMENSIONAL TOLERANCES ntawm JIS G3452
- Sab nraud txoj kab uas hla a)
| Kev faib tawm | Sab nraud txoj kab uas hla b) |
Tolerances rau Sab nraud txoj kab uas hla c) |
Siv tau Division |
| Chav Kawm 1 | Hauv qab 50mm | ± 0.5 hli |
Siv thaum tsis muaj specification. Muaj feem xyuam rau cov kub - tiav seamless steel raj. |
| 50mm los yog Tshaj | ± 1% | ||
| Chav kawm 2 | Hauv qab 50mm | ± 0.25 hli |
Siv thaum muaj qhov tshwj xeeb. Tsis muaj feem xyuam rau kub - tiav seamless steel raj. |
| 50mm los yog Tshaj | ± 0.5% | ||
| Sau ntawv | a) Rau qhov chaw hauv zos xws li kho qhov chaw yog tias phab ntsa tuab tuaj yeem lees paub tias yog nyob rau hauv lub kam rau ua nyob rau hauv lub rooj hauv qab no, lub sab nraud txoj kab uas hla kam rau ua ntawm lub rooj no yuav tsum tsis txhob siv. |
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| b) Cov txheej txheem rau kev ntsuas cov kab sab nraud ntawm cov raj siab tshaj 350mm nyob rau hauv sab nraud txoj kab uas hla yuav raug txiav txim los ntawm qhov ntev ntev. Kev sib hloov ntawm sab nraud txoj kab uas hla D thiab lub voj voog ntev l yuav tsum yog los ntawm cov qauv hauv qab no: D = l / π Qhov twg D: sab nraud txoj kab uas hla (mm) l: circumferential ntev (mm) π: 3.1416 |
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| c) Lub tolerances nyob rau sab nraud txoj kab uas hla ntawm qhov kawg ntawm hluav taws xob kuj welded thiab tsis siv neeg arc welded steel hlab tshaj 350mm nyob rau hauv sab nraud txoj kab uas hla yuav tsum yog ± 0.5%. |
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- Phab ntsa Thickness kam rau ua a)
| Kev faib tawm | Rau Seamless Steel Tube | Rau Lwm yam tshaj Seamless Steel Tube | Siv tau Division | ||
| Phab ntsa Thickness | Tolerance ntawm phab ntsa Thickness | Phab ntsa Thickness | Tolerance ntawm phab ntsa Thickness | ||
| Chav Kawm 1 | Hauv qab 4mm | +0.6mm, -0.5 hli | Hauv qab 4mm | +0.6mm, -0.5 hli |
Siv thaum tsis muaj specification. Muaj feem xyuam rau cov kub - tiav seamless steel raj. |
| 4mm los yog Over | +15%, -12.5% | 4mm los yog Tshaj rau thiab excl. 12mm | +15%, -12.5% | ||
| 12mm los yog Tshaj | +15%, -1.5 hli | ||||
| Chav kawm 2 | Hauv qab 3mm | ± 0.3 hli | Hauv qab 3mm | ± 0.3 hli |
Siv thaum muaj qhov tshwj xeeb. Tsis muaj feem xyuam rau kub - tiav seamless steel raj. |
| 3mm los yog Over | ±10% | 3mm los yog Tshaj rau thiab excl. 12mm | ±10% | ||
| 12mm los yog Tshaj | +10%, -1.2 hli | ||||
| Sau ntawv | a) Kev kam rau siab ntawm phab ntsa tuab ntawm cov raj siab tshaj 1016.0 hli nyob rau sab nraud txoj kab uas hla tuaj yeem pom zoo los ntawm cov chaw tsim khoom thiab cov neeg yuav khoom. | ||||
MARKING NTAWM JIS G3452 PIPE
Ib daim ntawv lo uas muaj cov ntaub ntawv hauv qab no yuav tsum tau muab tso rau ntawm txhua lub yeeb nkab uas tau dhau los soj ntsuam: cov kav dej me thiab lwm cov kav dej tau raug xaiv los ntawm tus neeg yuav khoom, ntawm qhov tod tes, tej zaum yuav muab ntim ua ke thiab tagged nrog tus lej cim rau txhua pob. Cov kab ke uas qhia cov khoom yuav tsum tau npaj tsis tau teev nyob rau hauv ob qho xwm txheej.
Ib feem ntawm cov khoom yuav raug tshem tawm yog tias tus neeg yuav khoom tso cai rau nws.
• Qib yog sawv cev los ntawm tsab ntawv kos npe.
• Daim ntawv kos npe uas sawv cev rau cov txheej txheem tsim khoom
• Qhov ntev
• Tus neeg tsim khoom lub npe lossis nws cov cim npe
