分析-采样器? 回复 1# niulijun117 lpg sampling cylinder: stainless steel double-valve lpg sampling cylinder compliance with sh 0233 standard. the needle valves selected are resistant to high temperature, high pressure and corrosion. the cylindrical shell and the valves are well-insulated and wrapped around together with thermocouple using heat tape of 3 - 5 m in length.查看更多