|Attachment damaged or missing. Attached to the oxygen cylinder are a valve, a handwheel, a cap and a shockproof rubber ring. The bottle cap is to prevent the cylinder valve from being damaged by impact in the process of handling, or even being broken to make the gas spewing out at high speed, pushing the cylinder valve and handwheel forward high speed to cause casualties. Shockproof ring is a protective device to prevent the cylinder from being impacted. It is required to have a certain thickness and elasticity.
欧美视频毛片在线播放 欧美a片 欧美黄片 欧美一级高清片 欧美av电影
Copyright © 2008-2012
山東華辰高壓容器集團有限公司 技術支持：谷騰信息 濟南網站建設