Standard: AISI, ASTM, DIN, GB, JIS 2.Material: Carbon steel 3.Grade: Q235 4.Surface finish: Galvanization C channel fitting( ... fittings, fitting plate), U fittings , all framing fitting. c channel Post Base, strut fittingBasic information:Standard: AISI, ASTM, DIN, GB, JISMaterial ... : HDG or Electro-galvanization Feature: slotted and plain C Channel Post Base