Square Tube factory

square hollow section, the orifice is flat, the outer and inner walls of sections are smooth, and the welds are tight.

hot galvanized square tube orifice is flat, the outer and inner walls of the steel pipe are smooth

Square Tube factory YuantaiDerun(accept oem obm odm), low cost,high quality,complete specifications,fast delivery.

galvanized square tube yuantaiderun(oem odm obm). its advantage is low cost,high quality,complete specifications,fast delivery.