GB / T 3091 "Welded steel yeeb nkab rau kev thauj mus los tsis tshua muaj siab" (2015 version ntawm tus qauv version) tau pom zoo los ntawm National Standardization Committee thiab raug tso tawm, txij li lub Rau Hli 01, 2016 kev siv;Nyob rau tib lub sijhawm, tus qauv GB / T 3091-2008 tus qauv tsis raug cai!
Kev txhais cov ntsiab lus tseem ceeb ntawm National Standard tshiab:
1. Galvanized hnyav - "Kab hauv qab"
Nyob rau hauv lub teb chaws tus qauv tshiab, nyob rau hauv zinc txheej luj Performance index ntawm galvanized steel yeeb nkab thawj zaug muab tso rau pem hauv ntej lub "kab hauv qab yuav tsum tau"!Namely: nyob rau hauv lub qub version ntawm tus qauv tsuas yog "sib tham lus" nyob rau hauv lub hauv paus ntawm nce "steel yeeb nkab nyob rau hauv thiab sab nrauv nto galvanized txheej chav tsev cheeb tsam tag nrho qhov hnyav yuav tsum tsis txhob tsawg tshaj li 300g / m²" yuav tsum tau tus txheej txheem.
Raws li qhov tshwm sim, lub neej nruab nrab ntawm cov yeeb nkab steel txuas ntxiv los ntawm tsawg kawg 30% !!
2. Cov yeeb nkab kawg
Cov kav hlau uas muaj txoj kab nruab nrab sab nraud tsis pub ntau tshaj 114.3mm (4 ntiv tes los yog tsawg dua) yuav tsum yog cov neeg kho tshuab tiaj tus (tsis muaj burrs tom kawg).
3. Kho vuam ntawm qhov tsis xws luag
Tom qab kev hloov kho ntawm tus qauv tshiab, kev kho qhov tsis xws luag yog hloov mus rau: ncaj seam hluav taws xob welded steel yeeb nkab nrog cov kab sab nraud tsawg dua 219.1 hli tsis pub kho vuam.
Kev sib piv: GB / T3091-2008 qhia tias "steel yeeb nkab nrog txoj kab uas hla tsis ntau dua 114.3mm tsis raug tso cai los kho cov vuam, steel yeeb nkab nrog txoj kab uas hla tsis tsawg dua 114.3mm, tuaj yeem kho qhov tsis xws ntawm lub hauv paus hlau thiab vuam."
4. Phab ntsa thickness
Tus qauv tshiab qhia qhov tsawg kawg nkaus tus nqi ntawm nominal phab ntsa tuab ntawm cov yeeb nkab steel, uas yog, Table 1 "Nominal txoj kab uas hla, txheej txoj kab uas hla, Nominal Phab ntsa thickness thiab uncircularity ntawm cov yeeb nkab steel nrog txheej kab tsis ntau tshaj 219.1mm" yog ntxiv, uas muab ib tug lub hauv paus ncaj qha rau kev tsim thiab xaiv cov ntaub ntawv ntawm engineering tsim units.
Ø Hlau yeeb nkab nrog nominal phab ntsa thickness tsawg dua ** me me tsis pub ua GB / T3091-2015 tus qauv !!
5. Hlau yeeb nkab cim
Tus txheej txheem tshiab hais tias: "Kev kos npe ntawm cov kav hlau yuav tsum muaj tsawg kawg yog cov hauv qab no: cov chaw tsim khoom lub npe lossis cov cim lag luam, cov khoom lag luam tus lej, tus naj npawb ntawm cov khoom lag luam, cov khoom lag luam thiab cov lej txheeb xyuas tus lej."
Cov yeeb nkab steel muaj cov ntawv cim khoom thiab cov yeeb nkab lub cev code.Yog tias ib qho ntawm cov ntaub ntawv saum toj no ploj lawm, nws yog qhov txhaum cai.
Post lub sij hawm: Lub Xya hli ntuj-09-2022