精品人妻无码一区二区三区四区无码,亚洲色偷拍另类无码专区,国产精品无码v在线观看,中文字幕熟女人妻av一区二区三区

壓力Pressure

PN10-420

直徑 Diameter

DN6-900

溫度范圍Temperature Range

-196℃ - 540℃

驅(qū)動方式 Drive Type

手動，蝸輪蝸桿傳動，氣動，電動，液動, 氣液聯(lián)動，電液聯(lián)動

Manual, worm-drive, pneumatic, electric, hydraulic, Pneumatic-hydraulic, electrohydraulic

參考標準 Reference

API6D, API608, ASME16.34, NACE MR0175, GB/T12237, ANSI/AWWA C507, BFCI70-2, MSS SP-72, ISO 5211等 etc.