HG/T 2479-2003.Specifications for wavy plate springs for mechanical seals. 1范围 HG/T 2479规定了机械密封用波形弹簧...
HG化工标准
HG化工标准
HG化工标准
HG/T 2479-2020 代替HG/T 2479-2003 机械密封用波形弹簧技术条件
HG/T 2479-2020.Specifications of wavy plate springs for mechanical seals. 1范围 HG/T 2479规定了机械密封用波形弹簧的...