Galvanized square thiab rectangular yeeb nkab ntau lawm txheej txheem kev faib tawm:
Square thiab rectangular raj tau muab faib raws li cov txheej txheem ntau lawm: kub dov seamless square raj, txias-draw seamless square raj, extruded seamless square raj, thiab welded square raj. Ntawm lawv, welded square kav muab faib ua:
(a) Raws li kev siv thev naus laus zis - arc vuam square raj, tsis kam vuam tshuab square raj (siab zaus, siab zaus), roj txiav square raj, rauv vuam square raj
(b) Raws li vuam - ncaj seam welded square yeeb nkab, kauv welded square yeeb nkab.
Galvanized square tubeKev faib cov khoom siv:
Cov raj square tau muab faib ua cov khoom siv: cov pa roj carbon steel square tubes thiab alloy structural steel square raj. Cov pa roj carbon ntau yog muab faib ua: Q195, Q215, Q235, SS400, 20 # steel, 45 # steel, thiab lwm yam; high alloy steel muab faib ua Q345, 16Mn, Q390, ST52-3, thiab lwm yam.
Galvanized square thiab rectangular raj cross-section faib:
Cov raj square raug cais raws li lawv cov duab hla ntu: (1) Cov kab sib dhos yooj yim-seem square tubes - square square tubes, square thav duab square tubes (2) Complex cross-section square tubes - paj-puab square raj, qhib lub qhov ncauj square. tubes, corrugated square tubes, tshwj xeeb-shaped square tubes Square raj.