SCH sawv rau dab tsi

SCH sawv cev rau dab tsi?

SCH yog lub ntsiab lus ntawm Schedule, uas feem ntau tshwm nyob rau hauv American steel yeeb nkab qauv. Nws yog lub prefix ntawm ib tug serial tooj.
Piv txwv li: SCH10, SCH40, SCH80, thiab lwm yam, sib xws rau cov lej saum toj no, koj yuav pom cov phab ntsa sib txuas ntawm txhua qhov tshwj xeeb ntawm cov yeeb nkab steel hauv cov yeeb nkab steel loj. Qhov no yog ib txoj hauv kev zoo rau standardize thiab serialize qhov loj ntawm steel kav.

SCH Size Table

Cov txheej txheem yeeb nkab(sch.) tsis yog phab ntsa tuab, tab sis yog phab ntsa thickness series. Cov txheej txheem yeeb nkab sib txawv txhais tau hais tias cov phab ntsa sib txawv rau cov yeeb nkab steel hauv tib txoj kab uas hla. Cov lus qhia nquag tshaj plaws ntawm lub sijhawm yog SCH 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160.

Txoj kev nthuav qhia steel yeeb nkab phab ntsa thickness
Muaj peb txoj hauv kev los nthuav qhia cov phab ntsa tuab ntawm cov kav hlau: cov yeeb nkab tooj, steel yeeb nkab phab ntsa thickness loj thiab cov yeeb nkab hnyav.
1) Cov yeeb nkab tooj "Sch" qhia txog phab ntsa tuab.
Cov xov tooj yeeb nkab * Qhov sib piv ntawm cov yeeb nkab tsim siab rau qhov tso cai rau kev ntxhov siab ntawm cov khoom ntawm qhov tsim kub sib npaug los ntawm 1000 thiab sib npaug.
Ntawd yog: Sch＝P/[σ]t × 1000
ANSI B36.10 phab ntsa thickness qib: Sch10, Sch20, Sch30, Sch40, Sch60, Sch80, Sch100, Sch120,

Kaum theem ntawm Sch140 thiab Sch160;
ANSI B36.19 phab ntsa thickness qib: plaub qib: Sch5s, Sch10s, Sch40s, thiab Sch80s;
2) Cov phab ntsa tuab ntawm cov yeeb nkab steel yog siv los qhia cov qauv siv los ntawm qee cov kav hlau hauv Suav teb, ISO thiab Nyiv.
3) Cov yeeb nkab phab ntsa tuab yog qhia los ntawm qhov hnyav ntawm cov yeeb nkab, uas faib cov yeeb nkab phab ntsa thickness rau peb hom:
a. Standard luj tube, sawv cev los ntawm STD
b. Thickened raj, sawv cev los ntawm XS
c. Cov yeeb nkab tuab ntxiv, sawv cev los ntawm XXS.
Rau cov kav dej nrog DN Tsawg dua lossis sib npaug ntawm 250mn, Sch40 yog sib npaug rau STD; rau cov kav dej nrog DN<200mm, Sch80 is equivalent to XS