Cov Kav Hlau Uas Muaj Kauv Sib Dhos ASTM A252 Qib 1 2 3
Khoom Siv Kho Tshuab
| Qib 1 | Qib 2 | Qib 3 | |
| Yield Point los yog yield zog, min, Mpa (PSI) | 205 (30 000) | 240 (35 000) | 310 (45 000) |
| Lub zog tensile, min, Mpa (PSI) | 345 (50 000) | 415 (60 000) | 455 (66 0000) |
Kev tshuaj xyuas khoom
Cov hlau yuav tsum muaj tsis pub ntau tshaj 0.050% phosphorous.
Kev Hloov Pauv Uas Tso Cai Hauv Qhov Hnyav thiab Qhov Ntev
Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tau ntsuas sib cais thiab nws qhov hnyav yuav tsum tsis txhob hloov ntau tshaj 15% dhau lossis 5% qis dua nws qhov hnyav theoretical, xam los ntawm kev siv nws qhov ntev thiab nws qhov hnyav ib chav ntev.
Lub sab nraud txoj kab uas hla yuav tsum tsis txhob hloov ntau dua ± 1% ntawm qhov teev tseg nominal sab nraud txoj kab uas hla
Phab ntsa tuab ntawm txhua qhov chaw yuav tsum tsis pub ntau tshaj 12.5% nyob rau hauv qhov tuab ntawm phab ntsa uas tau teev tseg
Ntev
Ib qho ntev random: 16 txog 25ft (4.88 txog 7.62m)
Ob chav random ntev: tshaj 25ft txog 35ft (7.62 txog 10.67m)
Qhov ntev sib xws: kev hloov pauv uas tso cai ± 1in
Xaus
Cov kav dej yuav tsum muaj cov qhov kawg tiaj tus, thiab cov burrs ntawm qhov kawg yuav tsum raug tshem tawm
Thaum lub yeeb nkab kawg tau teev tseg kom yog bevel kawg, lub kaum sab xis yuav tsum yog 30 txog 35 degree
Kev cim khoom
Txhua qhov ntev ntawm cov yeeb nkab yuav tsum tau cim kom pom tseeb los ntawm stenciling, stamping, lossis dov kom qhia: lub npe lossis hom ntawm tus neeg tsim khoom, tus lej cua sov, cov txheej txheem ntawm tus neeg tsim khoom, hom helical seam, sab nraud txoj kab uas hla, nominal phab ntsa thickness, ntev, thiab qhov hnyav ib chav ntev, qhov kev qhia tshwj xeeb thiab qib.
