——New pipeline core technology creator——
Safe Fire Protection System
一、Pipeline Operation Status
Traditional Welded Connection
1、Much operation room,high labor intensity
2、High temperature and open fire in construction sites ,will easy to break out fire
3、High skill requirement for installers，high construction costs，need lots of auxiliary facilities and material，difficult to maintain
1、Threaded device is inconvenient for operation，causing all pipe sockets need to be wired at fixed points and the transported to pipeline connection points，which is time-consuming and labor-consuming.
2、In order to over the wire , the pipe needs to increase the wall thickness and exist the problem of“excess wall thickness”consume more expense more
3、The surface of skein is rough, and it is non-threaded sealing pipe thread.The connecting port needs to be filled with raw material belt and hemp thread.And the leakage point will often occur if the filling is not in place.
Threaded Connection Pipe-Galvanized pipe
1.Main components:galvanized iron
2.Product defect:easy to corrode and to rust,contact with water to accelerate corrosion in atmospheric environment
3.Service life: 15-20 years
4.Installation and construction:high labor intensity
5.Using effect:thick wall,much consume,surface is easy to rust,pollute the wall,the inner wall of pipe is easy to scale,the diameter inside will narrow year by year.Under the action of water pressure,corroded dirt tends to gather at the spray outlet,which often affects the spraying head and even directly blocks it.
1.Threaded device is inconvenient for operation，causing all pipe sockets need to be wired at fixed points and the transported to pipeline connection points，which is time-consuming and labor-consuming
Connection of overhead pipes
Connection of overhead pipes shall adopt groove connection(hoop),threaded,flange,Press fitting and so on,welded connection is not suggested.
四、Connection Method Selection
●The connection modes of press fitting and groove
Press fitting DN15-DN50 ＞DN50Groove connection
Thin wall zinc-plastic carbon steel pipe of press fitting
●Easy construction、standardization、stable quality（traditional screw thread needs 5min，press fitting needs 7s ）
●Performance improvement（traditional technique 2.5Mpa，press fitting4.0Mpa without damaging the galvanized layer ）
●The construction period is greatly shortened，improve the project funds turnover rate
●Lightweight design of pipe and pipe fitting，it saves nearly50% of the raw materials compared with the traditional galvanized pipe，conform to the national energy conservation and emission reduction development strategy
●GB/T29038-2012<Technical Specification for Thin Wall Stainless Steel Pipe>
●10S407-2<Installation of Thin Wall Stainless Steel pipe for Water Supply>
●CECS153-2003<Engineering Specification of Thin Wall Stainless Steel Pipeline for Construction>
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