Aluminum bar Standard gb/t3191-98gb/t4437.1-2000gb/t6893-2000gb/t10571-89ys/t97-97 Specification Rod:»5-»600 pipe: all kinds of specification Temper H112fot4t5t6 Material L1-l62a022a062a112a122a132a142a162a502a702a802a903a2130035a025a035a055a065a12505250836a02606160637a047a0970757a15