石油、天然气工业用螺柱连接阀盖的钢制闸阀 抽样的最少基数和抽样数
公称尺寸
DN
最少基数/台
抽样数/台
≤150
10
2
≥200
3
1
Your closest 开云手机在线登陆入口-开云(中国) is
Return to 开云手机在线登陆入口-开云(中国) International continue to 开云手机在线登陆入口-开云(中国)
This region has not yet joined our new website. You will now continue to the existing site for 开云手机在线登陆入口-开云(中国)
Continue