C54400铜合金力学性能C72650C72700C72800C72900C72950C73100C73150C73200C73500C73600C73800C74000C74100C74300C74400C74500C75200C75400C75700C75720C75900C76000C76100C76200C76300C76390C76400C76600C76700C77000C77010C77300C77310C77400C77600C78150C78200C
品牌:北鼎金属 规格:规格齐全 产地:进口国产 材质:C54400铜合金力学性能