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ASTM B 502 Aluminium-clad steel core wire for aluminium conductors,aluminium-clad steel reinforced ,either AW2(norminal strength) or  AW3(high strength)

ASTM B 856 Concentric-lay stranded aluminium conductors , coated steel supported(ACSS)

求助以上2個(gè)標(biāo)準(zhǔn),謝謝！