Recently, my chinese government is supervising the environmental protection, so, the steel company is influenced. Producing steel pipe will produce many waste gas, so, my government adopt some measurements to limite the pipe production. so , the raw material of concrete pump pipe is urgent in china. Demand exceeds supply, so , the pipe price rising everyday ! My factory concrete pump pipe raw material including 20#,16Mn,45Mn, 37Mn5,45# and so on pipes are come from chinese biggest national steel enterprise,Anhui steel company, which is one of biggest steel companies, the pipe produced from this company quality is the best, and pipe performance is stable. Including the service life, hardness, wear resistent degree are all the best one. The pipe ram material pipe price rising every two days, even some small factory has been closed, so , dear customer, if you have enquiry about the steel pipe,I suggest you to purchase these pipes soonest !