Pre-Galvanized Square / Rectangular Tube
1. 16mn Continental Square Tube
Cov tshuaj muaj pes tsawg leeg: carbon C: 0.17 ~ 0.24 "silicon Si: 0.17 ~ 0.37 manganese Mn: 0.35 ~ 0.65 sulfur S: ≤ 0.035 phosphorus P: ≤ 0.035 chromium Cr: ≤ 0.25 ≤ nickel.
2.16mn square tub
Cov tshuaj muaj pes tsawg leeg: carbon C: 0.17 ~ 0.24 "silicon Si: 0.17 ~ 0.37 manganese Mn: 0.35 ~ 0.65 sulfur S: ≤ 0.035 phosphorus P: ≤ 0.035 chromium Cr: ≤ 0.25 ≤ 0.20 nickel Nitrogen
1.1 Plasticity
Plasticity yog lub peev xwm ntawm cov khoom siv hlau los tsim cov yas deformation (mus tas li deformation) hauv kev thauj khoom yam tsis muaj kev puas tsuaj.
1.2 Hardness
Hardness yog ib qho taw qhia rau qib hardness lossis softness ntawm cov khoom siv hlau.Txoj kev siv feem ntau los txiav txim siab hardness hauv ntau lawm yog txoj kev indentation hardness, uas siv ib qho indenter ntawm ib qho geometry los nias rau hauv qhov chaw ntawm cov khoom siv hlau kuaj nyob rau hauv ib qho kev thauj khoom thiab txiav txim siab nws cov nqi hardness raws li qib ntawm kev nias. rau hauv nws.
Cov kev siv feem ntau yog Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) thiab Vickers hardness (HV) txoj kev.
1.3 Kev qaug zog
Lub zog, plasticity thiab hardness tau tham ua ntej yog tag nrho cov taw qhia rau cov khoom siv hluav taws xob ntawm cov hlau nyob rau hauv static load.Qhov tseeb, ntau lub tshuab qhov chaw ua haujlwm nyob rau hauv lub voj voog, thiab nyob rau hauv cov xwm txheej zoo li no cov khoom ua rau qaug zog.
1.4 Impact toughness
Lub load ua haujlwm ntawm lub tshuab ua haujlwm ntawm qhov nrawm yog hu ua cuam tshuam load, thiab lub peev xwm ntawm cov hlau los tiv thaiv kev puas tsuaj nyob rau hauv kev cuam tshuam load yog hu ua cuam tshuam toughness.
1.5 Lub zog
Lub zog yog qhov tsis kam ntawm cov khoom siv hlau rau kev puas tsuaj (ntau cov yas deformation los yog tawg) nyob rau hauv ib qho khoom zoo li qub.Raws li kev thauj khoom hauv daim ntawv ntawm tensile, compression, dabtsi yog khoov, shear, yog li lub zog tseem muab faib ua tensile zog, compressive zog, dabtsi yog khoov zog, shear zog, thiab lwm yam. siv lub zog tensile dav dav raws li qhov yooj yim tshaj plaws lub zog pointer.
Square raj yog siv rau hauv kev tsim kho, tshuab tsim, steel tsim cov phiaj xwm, nkoj tsim, kev txhawb nqa hnub ci tsim hluav taws xob, steel qauv engineering, hluav taws xob engineering, fais fab nroj tsuag, kev ua liaj ua teb thiab tshuaj machinery, iav kab hlau rhuav phab ntsa, tsheb chassis, tshav dav hlau, boiler siv, kev loj railings , kev tsim vaj tsev, cov hlab ntsha siab, cov roj av cia tso tsheb hlau luam, txuas hniav, cov khoom siv fais fab, nqa thiab tsheb thauj mus los thiab lwm yam khoom siv siab welded structural qhov chaw, thiab lwm yam.
Txheej txheem kev faib tawm
Square raj yog cais raws li cov txheej txheem ntau lawm: kub dov seamless square raj, txias kos seamless square raj, extruded seamless square raj, welded square raj.
Ntawm lawv, welded square raj muab faib ua
1. Raws li cov txheej txheem - arc vuam square tube, tsis kam vuam square raj (siab zaus, tsis tshua muaj zaus), roj vuam square raj, rauv vuam square raj
2. Raws li cov vuam seam - ncaj seam welded square yeeb nkab, kauv welded square yeeb nkab.
Kev faib khoom
Square yeeb nkab los ntawm cov khoom siv: tiaj carbon steel square yeeb nkab, qis alloy square yeeb nkab.
1. Plain carbon steel yog muab faib ua: Q195, Q215, Q235, SS400, 20# steel, 45# steel, thiab lwm yam.
2. Tsawg alloy steel yog muab faib ua: Q345, 16Mn, Q390, ST52-3, thiab lwm yam.
Kev faib khoom txheem
Square raj raws li cov qauv tsim: lub teb chaws tus qauv square raj, Japanese txheem square raj, imperial square raj, American txheem square raj, European txheem square raj, tsis yog-tus qauv square raj.
Tshooj puab kev faib tawm
Square raj raws li cov duab ntawm kev faib cov seem.
1. Tej yam yooj yim seem square tube: square square raj, lub raj square raj.
2. Complex seem square raj: paj square raj, qhib square raj, corrugated square raj, zoo li tus square raj.
Kev kho deg kev faib tawm
Square raj raws li kev kho deg: kub dip galvanized square raj, electro galvanized square raj, oiled square raj, pickled square raj.
Siv kev faib tawm
Square raj los ntawm daim ntawv thov: hniav square raj, tshuab cuab yeej cuab yeej square tube, machinery kev lag luam square raj, tshuaj kev lag luam square raj, steel qauv square raj, shipbuilding square raj, automotive square raj, steel beam square raj, tshwj xeeb lub hom phiaj square raj.
Phab ntsa thickness classification
Square raj yog cais los ntawm phab ntsa thickness: super tuab phab ntsa square raj, tuab phab ntsa square raj thiab nyias phab ntsa square raj.
| Thick-walled square tube specification rooj (mm) | Thick-walled rectangular yeeb nkab specification rooj (mm) | ||
| 16-34 × 0.4 x 2.0 | 380 ~ 500 × 380 ~ 500 × 8.0 ~ 30.0 hli | 10 ~ 20 × 20 ~ 40 × 0.6 ~ 12.0 hli | 250 ~ 300 × 100 ~ 250 × 6 ~ 30.0 |
| 35 × 35 × 1.0 × 4.0 | Lwm qhov kev kos duab rov qab yog raws li hauv qab no | 20 × 50 × 1.0 × 2.0 | 400 × 250 × 8 × 30.0 |
| 38 × 38 × 1.0 × 4.0 | 550 × 550 × 10.0 ~ 40.0 | 22 ~ 40 × 35 ~ 100 × 0.9 ~ 5.0 | 400 ~ × 300 × 8 × 30.0 |
| 40 ~ 95 × 40 ~ 95 × 1.0 ~ 8.0 | 600 ~ 1000 × 600 ~ 1000 × 10.0 ~ 50.0 hli | 25 × 40 × 0.9 × 3.75 hli | 450 ~ 500 × 200 ~ 450 × 8 ~ 30.0 |
| 100 × 100 × 2.0 × 8.0 | 50 × 60 × 2.0 × 5.0 | Lwm qhov kev kos duab rov qab yog raws li hauv qab no | |
| 120 ~ 350 × 120 ~ 350 × 4.0 ~ 30.0 | 50 ~ 200 × 60 ~ 150 × 2.0 ~ 12.0 | 600 ~ 1000 × 200 ~ 800 × 10 ~ 28.0 | |
