... line. 3.CE,ISO,ASTM A500,JIS ASTM A500 Galvanized Rectangular Steel Pipe 1. STANDARD:GB/T3094-2000, ... Stainless steel, Seamless steel, Alloy steel.3. SURFACE:Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment ... , agricultural machinery, textile machinery, papermaking machinery, food machinery, electrical equipment, sanitation equipment.(2).Roads and Bridges: railway, aviation, ...