I have just come to this factory to work, do not know this thing on the human body what harm! Please tell me, please tell me 笭 蒂 蒂 郦 郦 郦 郦 The The The The The The The The The The The The The The The The The More
Specification is not more than . you can see the scaffolding specification.
It is a type of flexible cast iron pipe , And the above three models are not related to the connection is the use of socket type, with linen, cement seal, this tube is a rigid connection, poor seismic resistance, easy to leak, has long been eliminated
According to the following construction methods can achieve good results:
