WROUGHT ALUMINIUM AND ALUMINIUM ALLOYS. GROUP: AL-SN. ALLOY L-3921 AL-20SN
锻造铝和铝合金 组:AL-SN L-3921铝-20SN合金

1983-03-15

ALUMINIUM AND ALUMINIUM ALLOYS FOR CASTING. GROUP: AL-SN. ALLOY L-2910 AL-6 SNNI.
铸造用铝及铝合金 组:AL-SN 合金L-2910 AL-6 SNNI

1993-02-12

WROUGHT ALUMINIUM AND ALUMINIUM ALLOYS. GROUP: AL-ZN ALLOY L-3731 AL-3ZN2MG
锻造铝和铝合金 组:AL-ZN合金L-3731 AL-3ZN2MG

1982-11-15

WROUGHT ALUMINIUM AND ALUMINIUM ALLOYS. GROUP AL. ALLOY L-3052 (AL 99,5 E)
锻造铝和铝合金 铝合金L-3052组（铝99,5 E）

1979-05-15

WROUGHT ALUMINIUM AND ALUMINIUM ALLOYS. GROUP: AL-SI. ALLOY L-3531. AL-6SIMG
锻造铝和铝合金 组:AL-SI 合金L-3531 AL-6SIMG

1982-03-15