关注微信公众号查券更方便
40CrMnM0材料PCrNi3M0A圆棒X40Gr13钢材2Gr11Mo1NiWVNbN棒料元园
Y10Gr17元钢材2Gr11Mo1NiWVNbN_40GrMoV4-6_34GrNiMo8圆钢棒材