ASTM A252 specification yog dab tsi?
A252 kuj welded yeeb nkab yog hais txog steel yeeb nkab piles tsim siv cov cuab yeej siv vuam (ERW), ua raws li ASTM A252 tus qauv (Qib 2 lossis Qib 3). Nws cov yam ntxwv tseem ceeb muaj xws li:
Txheej Txheem Txheej Txheem: Siab- zaus tam sim no yog siv los ua kom sov cov npoo ntawm cov hlau phaj mus rau lub xeev molten, thiab lub siab yog siv los ua ib lub vuam seam yam tsis muaj cov hlau muab tub lim.
Standard Classification: Nws belongs rau ib qho ntawm cov txheej txheem vuam tau tso cai los ntawm ASTM A252 (tib yam qauv kuj suav nrog cov kauv vuam / ncaj seam vuam), thiab yuav tsum ua tau raws li cov khoom siv tshuaj sib xyaw thiab cov cuab yeej cuab tam (piv txwv li, GR3 yield zog ntau dua lossis sib npaug rau 310 MPa).
Yield zog ntawm A252 GR1 GR2 GR3
| Qib 1 Carbon Steel | (ASTM A252) |
|---|---|
| Yam tsawg kawg nkaus Yield Strength: | 30,000 psi |
| Maximum Yield Strength: | Tsis muaj |
| Yam tsawg kawg Tensile Strength: | 50,000 psi |
| Lus Cim: Qib no yog qib txheem rau ASTM A252. Cov lus qhia npog qhov yuav tsum tau ua rau welded thiab seamless steel piling yeeb nkab. | |
| Qib 2 Carbon Steel | (ASTM A252) |
|---|---|
| Yam tsawg kawg nkaus Yield Strength: | 35,000 psi |
| Maximum Yield Strength: | Tsis muaj |
| Yam tsawg kawg Tensile Strength: | 60,000 psi |
| Lus Cim: Qib no yog qib txheem rau ASTM A252. Cov lus qhia npog qhov yuav tsum tau ua rau welded thiab seamless steel piling yeeb nkab. | |
| Qib 3 Carbon Steel | (ASTM A252) |
|---|---|
| Yam tsawg kawg nkaus Yield Strength: | 45,000 psi |
| Maximum Yield Strength: | Tsis muaj |
| Yam tsawg kawg Tensile Strength: | 66,000 psi |
| Lus Cim: Qib no yog qib txheem rau ASTM A252. Cov lus qhia npog qhov yuav tsum tau ua rau welded thiab seamless steel piling yeeb nkab. |
ASTM A252 Hlau Yeeb Nkab Txheej Txheem
A252 steel yeeb nkab pawg tuaj yeem tsim los ntawm kev siv vuam lossis seamless txoj kev. Welded steel yeeb nkab piles muaj tus nqi qis dua thiab kev ua haujlwm ntau dua, ua tau raws li cov kev xav tau ntawm kev lag luam ntawm feem ntau cov phiaj xwm. Lawv cov txheej txheem tsim khoom suav nrog ntau cov kauj ruam xws li steel phaj dov, vuam, thiab kev kho cua sov, txhua qhov yuav tsum tau tswj xyuas kom zoo. Seamless steel yeeb nkab pawg, ntawm qhov tod tes, muab lub zog ntau dua thiab ua haujlwm zoo dua qub, ua rau lawv muaj txiaj ntsig zoo hauv cov haujlwm uas xav tau siab rau cov yeeb nkab zoo thiab kev ua haujlwm. Lawv cov txheej txheem tsim khoom yog qhov nyuaj dua, suav nrog ntau cov kauj ruam xws li tho, dov, thiab kos duab.
ASTM A252 Daim Ntawv Thov:
Dav siv nyob rau hauv lub hauv paus engineering rau lub tsev, txuas hniav, txoj kab nqes tiv thaiv, thiab lwm yam kev siv. Raws li kev thauj khoom mus tas li-cov khoom siv, cov yeeb nkab steel tuaj yeem tiv taus cov loads loj thiab siab, muab kev txhawb nqa ruaj khov rau cov qauv. Hauv kev tsim choj choj, cov yeeb nkab steel feem ntau yog siv los txhawb cov qauv ntawm cov piers thiab abutments kom ntseeg tau tias kev ruaj ntseg thiab kev nyab xeeb ntawm cov choj. Tsis tas li ntawd, cov yeeb nkab steel kuj tseem tuaj yeem ua haujlwm rau cam khwb cia- hauv- qhov chaw ua vaj tse, ua ib pawg pawg sib xyaw nrog cov pob zeb, yog li txhim kho cov pawg thauj khoom- cov kabmob muaj peev xwm thiab tsis kam mus rau sab nraud.
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