HG/T 4114-2009.Technical conditions of mechanical seal for paper pulp pump. 1范围 HG/T 4114规定了纸浆泵用机械密封...
HG化工标准
HG化工标准
HG化工标准
HG/T 4114-2020 代替HG/T 4114-2009 纸浆泵用机械密封技术条件
HG/T 4114-2020.Specifications of mechanical seal for paper pulp pump. 1范围 HG/T 4114规定了纸浆泵用机械密封的要求、试验...