Kub-Dip Galvanized Rectangular Steel Pipes Ua li cas?

Ua ntej, cov hlau sawb yog txias- tsim rau hauv ib lub voj voog square raj, thiab tom qab ntawd dhau los ntawm cov txheej txheem xws li xeb tshem tawm → pab plating → kub dip galvanizing → txias → trimming. Zinc txheej yuav nkag mus rau hauv cov hlau thiab tsim ib txheej txheej hlau. Kev tiv thaiv -corrosion tsis yog tsuas yog "thaum xim", tab sis kev sib txuas ntawm hlau, uas muaj zog adhesion thiab tsis yooj yim rau poob.