ASTM A252 Mild Pipe Steel Qib 3 Nqe lus piav qhia
A252 GR3 yeeb nkab pawg yog Qib 3 steel yeeb nkab pawg tsim raws li American Society for Testing and Materials (ASTM) A252 tus qauv. Lawv muaj ntau yam kev siv hauv kev tsim kho engineering thiab feem ntau yog nyob rau hauv daim ntawv ntawm cov kav hlau ncig. Ntau cov phab ntsa thicknesses thiab diameters muaj. Cov yeeb nkab kawg yog feem ntau tiaj tus thiab perpendicular rau cov yeeb nkab axis, ua kom yooj yim pob tw thiab kev sib txuas thaum siv. Cov khawb me me thiab oxidation discoloration tuaj yeem tshwm sim ntawm qhov chaw vim yog cov txheej txheem tsim khoom, tab sis cov no yuav tsis cuam tshuam rau lawv qhov kev ua tau zoo.
astm a252 qib 3 tshuaj muaj pes tsawg leeg
|
Kev sib xyaw, % |
C, max | Si, max | Mn, max | P, max | S, max |
| Qib 3 | 0.26 | 0.45 | 1.6 | 0.05 | 0.03 |
ASTM A252, ASTM A252qib 3Hlau Yeeb Nkab Piles Mechanical Properties:
|
Mechanical Property |
Qib 3 |
|
Yam tsawg kawg Yield zogReH MPa |
310 |
|
Lub zog tensileRm MPa |
455 |
|
Tsawg kawg elongationA% |
20 |
ASTM A252 Qib 3 Pipe Pile Specification
| Txuj | AISI, DIN, EN, GB, IS, JIS, ASTM, ASME Pipe |
| ASME Sa252 Piling Seamless Tube Loj | 3.35 hli OD txog 101.6 hli OD |
| Carbon Steel ASTM A252 Gr 3 Welded Tube Loj | 6.35 hli OD txog 152 hli OD |
| Sa252 Steel Piling Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Carbon ASTM A252 Qib 3 Steel Tubephab ntsa thickness | 0.020 "-0.220", (cov phab ntsa tshwj xeeb muaj) |
| Carbon A252 Qib 3 Hlau Ntev | Ib qho Random, Ob Chav Random, Txheem & Txiav ntev Yeeb Nkab & Tube |
| SA252 Qib Steel tiav | Polished, AP (Annealed & Pickled), BA (Cim & Annealed), MF |
| ASTM A252 Qib Steel Form | Round, Hydraulic, 'U' khoov los yog Hollow, LSAW, Boiler, Ncaj Yeeb Nkab, Clad Pipe, Rectangular, Square Yeeb thiab lwm yam |
| Carbon ASTM A252 Hlau Hom | Welded, Seamless, ERW, EFW, Fabricated Yeeb Nkab, 'U' khoov los yog Hollow, Hydraulic, LSAW, Boiler, Ncaj Tube, Tube Chev, Round, Rectangular, Square Tube thiab lwm yam |
| Carbon Steel A252 Qib 3 Kawg | Plain End, Beveled End, Treaded Yeeb Nkab & Tube |
| ASME SA252 Qib 3 Daim Ntawv Thov | Roj Yeeb Nkab & Tube, Gas Pipe & Tube, Fluid Yeeb Nkab & Tube, Boiler Pipe & Tube, Kub Exchanger Tube |
astm a252 qib 3 hloov
ASTM A252 Qib 3 hloov kho yog qhov siab - lub zog steel yeeb nkab pawg nrog qhov tsawg kawg nkaus lub zog ntawm 50 ksi (345 MPa) thiab lub zog tensile yam tsawg kawg nkaus ntawm 66 ksi (455 MPa). Qhov "hloov" nam qhia tau hais tias muaj qhov tsawg kawg nkaus tawm lub zog ntau dua li tus qauv ASTM A252 Qib 3 (310 MPa lossis 45,000 psi), ua rau nws tsim nyog rau cov haujlwm uas hnyav hnyav, xws li cov hauv paus rau cov tsev loj lossis cov choj.
astm a252 qib 3 txheej txheem vuam
Raw Khoom Npaj:
Xaiv tus qauv- ua raws cov pa roj carbon steel ua raw khoom. Cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab ntawm cov hlau no yuav tsum ua tau raws li qib 3 hauv A252 tus qauv.
Tshawb xyuas cov khoom siv raw kom paub tseeb tias lawv tsis muaj qhov tsis xws luag thiab impurities thiab ua tau raws li qhov yuav tsum tau ua.
Hlau phaj txiav thiab ua ntej- kho:
Txiav cov hlau mus rau hauv qhov tsim nyog phaj ntau thiab tsawg.
Ua ntej- kho cov ntawv hlau, xws li tshem tawm xeb thiab qib, kom ntseeg tau qhov huv thiab tiaj tus.
Kev tsim thiab vuam:
Siv lub tshuab sib sau los yob cov hlau daim hlau rau hauv cov raj puag ncig.
Siv cov txheej txheem vuam tsim nyog (xws li submerged arc vuam, siab - zaus vuam, thiab lwm yam) kom khov kho cov pob qij txha ntawm cov hlab ntsha puag ncig, tsim cov yeeb nkab txuas txuas ntxiv.
Tshawb xyuas cov welds kom paub tseeb tias lawv tsis muaj kab nrib pleb, tsis tiav fusion, thiab lwm yam tsis xws luag.
Txiav rau Length thiab End Processing:
Txiav cov welded steel kav mus rau qhov ntev ntev raws li kev txiav txim siab.
Txheej cov yeeb nkab kawg, xws li flattening thiab chamfering, los pab txhawb kev tsim kho thiab kev sib txuas. Kev kho cua sov (yog tias xav tau):
Kev kho cua sov, xws li normalizing thiab tempering, yog siv rau cov kav hlau steel raws li tus qauv yuav tsum tau lossis cov neeg siv khoom xav tau los txhim kho lawv cov khoom siv thiab ua haujlwm.
Kev Tshawb Fawb thiab Kev Xeem:
Kev tshuaj xyuas thiab kev sim ua tiav yog ua tiav ntawm cov yeeb nkab uas tsim tawm, suav nrog kev tshuaj xyuas qhov muag, ntsuas qhov ntev, ntsuas cov cuab yeej siv tshuab (xws li kev ntsuas tensile thiab dabtsi yog khoov), thiab tsis yog - kuaj kev puas tsuaj (xws li kuaj ultrasonic thiab kuaj radiographic).
Ua kom ntseeg tau qhov zoo ntawm cov yeeb nkab pawg ua tau raws li qhov yuav tsum tau ua ntawm Qib 3 hauv ASTM A252 tus qauv.
Kev tiv thaiv corrosion (yog tias xav tau):
Corrosion tiv thaiv kev kho mob, xws li pleev xim thiab galvanizing, yog siv rau cov yeeb nkab pawg raws li qhov yuav tsum tau ntawm cov kev pab cuam ib puag ncig los txhim kho lawv corrosion kuj.
Ntim thiab Thauj Khoom:
Kev tshuaj xyuas thiab tsim nyog cov yeeb nkab pawg yog ntim los tiv thaiv kev puas tsuaj thaum thauj thiab khaws cia.
Kev thauj mus los yog npaj kom xa cov yeeb nkab xa mus rau cov neeg siv khoom qhov chaw.
