20201117 · Brass H62 and H59 are both a kind of copper alloy, as the game suggests, with copper content close to 62% and 59% respectively. H62 brass refers to a
contact8 · H59, GB, GB/T 2059, Copper and copper alloy strip, GB/T 5231, Designation and
contactChinese name: HPb59-1. Brass rod material name: lead brass drawn rod (semi-hard, 5~20mm) Grade: HPb59-1. Standard: GB/T 4423-2007. The biggest feature of copper is
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