JB/T 11777-2014
内燃机 铸造铝合金气缸盖 技术条件
Internal combustion engines - Cast aluminum cylinder heads - Specification
2014-05-12
JB/T 3905-2017
凿岩机械与气动工具 铸造铝合金通用技术条件
Rock drilling machines and pneumatic tools-General specifications for casting aluminium alloy
2017-11-07
JB/T 3904-2017
凿岩机械与气动工具 金属型、砂型铸造铝合金铸件通用技术条件
Rock drilling machines and pneumatic tools-General specifications for metal and sand casting aluminium alloy
2017-11-07