Square yeeb nkab yog lub npe rau cov yeeb nkab square thiab cov yeeb nkab, uas yog, cov yeeb nkab steel nrog qhov sib npaug thiab tsis sib npaug. Nws yog ua los ntawm dov strip steel tom qab kev kho mob. Feem ntau, cov sawb steel yog unpacked, leveled, crimped thiab welded los ua ib tug puag ncig yeeb nkab, ces dov mus rau hauv ib lub square yeeb nkab los ntawm lub round yeeb nkab, thiab ces txiav mus rau hauv lub ntev yuav tsum tau.

1. Qhov tso cai sib txawv ntawm phab ntsa tuab ntawm cov yeeb nkab square yuav tsum tsis pub tshaj 10% ntawm cov phab ntsa nominal thickness thaum phab ntsa thickness tsis ntau tshaj 10 hli, ntxiv los yog rho tawm 8% ntawm phab ntsa thickness thaum phab ntsa thickness ntau tshaj 10mm, tshwj tsis yog rau phab ntsa thickness ntawm cov ces kaum thiab weld cheeb tsam.

2. Lub sijhawm xa khoom ntev ntawm cov yeeb nkab square yog 4000mm-12000mm, feem ntau 6000mm thiab 12000mm. Lub raj duab plaub raug tso cai xa cov khoom luv luv thiab tsis ruaj khov ntev tsis pub tsawg dua 2000mm, thiab tseem tuaj yeem xa tuaj rau hauv daim ntawv ntawm lub raj txuas, tab sis tus Demander yuav tsum txiav tawm lub raj interface thaum siv nws. Qhov hnyav ntawm qhov ntsuas luv luv thiab cov khoom tsis ruaj khov yuav tsum tsis pub tshaj 5% ntawm tag nrho cov khoom xa tuaj. Rau lub sij hawm square tubes nrog theoretical hnyav tshaj 20kg / m, nws yuav tsum tsis pub tshaj 10% ntawm tag nrho cov khoom ntim

3. Qhov kev khoov ntawm cov yeeb nkab square square yuav tsum tsis txhob ntau tshaj 2 hli ib 'meter', thiab tag nrho cov dabtsi yog khoov degree yuav tsum tsis txhob ntau tshaj 0.2% ntawm tag nrho cov ntev.

Raws li cov txheej txheem ntau lawm, cov raj square tau muab faib ua kub dov seamless square raj, txias kos seamless square raj, extruded seamless square raj thiab welded square raj.

Lub welded square yeeb nkab yog muab faib ua

1. Raws li cov txheej txheem - arc vuam square raj, tsis kam vuam square tube (siab zaus thiab tsis tshua muaj zaus), roj vuam square raj thiab lub cub tawg vuam square raj

2. Raws li cov weld - ncaj welded square yeeb nkab thiab kauv welded square yeeb nkab.

Kev faib khoom

Cov raj square tau muab faib ua cov pa roj carbon zoo tib yam square raj thiab qis alloy square raj raws li cov khoom siv.

1. Cov pa roj carbon zoo tib yam tau 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 muab faib ua lub teb chaws tus qauv square raj, Japanese txheem square raj, British txheem square raj, American standard square raj, European txheem square raj thiab tsis yog-tus qauv square raj raws li cov qauv tsim.

Tshooj puab kev faib tawm

Cov kav dej square raug cais raws li cov duab seem:

1. Tej yam yooj yim seem square tube: square raj, rectangular raj.

2. Square tube nrog txoj haujlwm seem: paj zoo li lub raj square, qhib lub raj square, corrugated square raj thiab tshwj xeeb-shaped square raj.

Kev kho deg kev faib tawm

Cov kav dej square tau muab faib ua cov kav dej kub-dip galvanized square kav, electro galvanized square kav, oiled square kav thiab pickled square kav raws li kev kho deg.

Siv kev faib tawm

Square tubes yog cais los ntawm kev siv: square tubes rau kho kom zoo nkauj, square tubes rau tshuab cuab yeej, square tubes rau mechanical kev lag luam, square tubes rau chemical kev lag luam, square tubes rau steel qauv, square tubes rau nkoj tsim, square tubes rau tsheb, square raj rau steel beams thiab kab, thiab square tubes rau tshwj xeeb lub hom phiaj.

Phab ntsa thickness classification

Rectangular tubes raug cais raws li phab ntsa tuab: cov phab ntsa tuab tuab ntxiv, cov phab ntsa tuab tuab thiab cov phab ntsa nyias nyias. Peb lub Hoobkas muaj cov cuab yeej tsim khoom hauv kev ua lag luam, thiab muaj kev txawj ntse heev. Zoo siab txais tos cov phooj ywg thoob ntiaj teb los sab laj. Peb yuav sim peb qhov zoo tshaj plaws kom tau raws li koj cov kev xav tau ntau yam.