Loj Dia Luj Tshib
Cov yeeb nkab dabtsi yog khoov tshuab yog tib yam li kev khoov ntawm cov ntawv hlau.Nyob rau hauv cov ntaub ntawv ntawm ntshiab dabtsi yog khoov, thaum lub raj nrog ib tug txheej txoj kab uas hla ntawm D thiab ib tug phab ntsa thickness ntawm t yog khoov nyob rau hauv qhov kev txiav txim ntawm ib tug sab nraud lub sij hawm M, lub puab raj phab ntsa ntawm lub nruab nrab txheej yog raug rau tensile kev nyuaj siab σ1, thiab lub tube phab ntsa ua thinner;lub raj sab hauv ntawm cov txheej nruab nrab Lub phab ntsa yog raug rau tensile kev nyuaj siab σ1, thiab cov yeeb nkab phab ntsa yuav thicker.Ntxiv mus, tus ntoo khaub lig-sectional cov duab hloov los ntawm ib tug voj voog mus rau ib tug kwv yees li elliptical zoo vim yog ua ke rog F1 thiab F2.Thaum lub deformation loj dhau lawm, cov kab nrib pleb yuav tshwm sim ntawm cov phab ntsa sab nrauv thiab wrinkles ntawm phab ntsa hauv lub raj.
1. Muab faib los ntawm cov khoom siv:
Carbon steel:ASTM / ASME A234 WPB, WPC
Alloy:ASTM / ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV
Stainless hlau:ASTM / ASME A403 WP 304-304L-304H-304LN-304N AN40-32H-as4 a a40-32H-ASME A403 WP 347H
Tsawg kub steel:ASTM / ASME A402 WPL3-WPL 6
High kev kawm steel:ASTM / ASME A860 WPHY 42-46-52-60-65-70 Cast steel, alloy steel, stainless hlau, tooj liab, aluminium alloy, yas, argon leaching, PVC, PPR, RFPP (reinforced polypropylene), thiab lwm yam.
2. Raws li txoj kev tsim khoom, nws tuaj yeem muab faib ua kev thawb, nias, forging, casting, thiab lwm yam.
3. Raws li cov qauv tsim, nws tuaj yeem muab faib ua tus qauv hauv lub tebchaws, cov qauv hluav taws xob, cov qauv nkoj, cov qauv tshuaj, cov qauv dej, tus qauv Asmeskas, tus qauv German, tus qauv Japanese, tus qauv Lavxias, thiab lwm yam.
