亚洲爆乳无码专区,国产成人综合久久久久久,饥渴少妇BD正在播放,亚洲日韩成人精品不卡在线

Low-temperature

Low-temperature gate valve

Size:NPS1/2~NPS64

Class:CL150~CL2500

Design:API602,API600,BS6364

Connection Ends:NPT,SW,RF,RTJ,BW

Main Materials:Carbon steel, alloy steel, stainless steel

Medium:Ethylene,  propylene,  LNG, low temperature medium