250A53欧洲进口弹簧钢东莞明富现货直销
250A53弹簧钢型号优质进口明富钢材专业销售
欧洲标准弹簧钢250A53量大从优明富现货供应
明富钢材优质销售---250A53弹簧钢C. Si. Mn. S. P.
明富钢材优质销售---250A53弹簧钢0.53% 1.75% 0.75% 0.05% 0.05%
明富钢材优质销售---250A53弹簧钢250A53 is a silicon mangenese spring steel, supplied in the as rolled contition. 250A53steel is suitable for oil hardening and tempering