Galvanized rectangular steel pipe 1.Thickness: ... ASTM A500,JIS ASTM A500 Galvanized Rectangular Steel Pipe 1. STANDARD:GB/T3094-2000, GB ... Q235, Q275, Q345, 20#, 45#, Stainless steel, Seamless steel, Alloy steel.3. SURFACE:Bared, Galvanized, Oiled, Color ... Paint, 3PE; Or Other Anti-corrosive Treatment.4. TECHINQUE:Hot rolled, Cold rolled, ERW ...