murphenzo
Mechanical
- Nov 7, 2006
- 6
Hi there,
Looking at this from the point of view of corrosion, what would be considered best practice for attaching small diameter nozzles (~ 1/2" - 4") to a larger diameter MSCL pipe (DN1000 in this case)?
There are two possibilities we're currently looking at, each with their own concerns.
The first is welding in a stainless steel socket, with the inner edge of the socket flush with the cement lining (repaired after socket is installed). The concern here being if the cement doesn't sit flush against the socket or breaks up over time, there is potential for water flow down to the weld, and hence a corrosion issue. Is this a known issue?
The second is a flanged connection, achieved by welding plain mild steel pipe to the outside of the main pipe, then cement lining the transition into the nozzle and likely up the nozzle to the flange. Alternatively we could just use MSCL and just have to repair the cement at the transition. Is this how a flanged connection would normally be achieved?
Any better ways to do this? Any input would be greatly appreciated.
Cheers,
Justin
Looking at this from the point of view of corrosion, what would be considered best practice for attaching small diameter nozzles (~ 1/2" - 4") to a larger diameter MSCL pipe (DN1000 in this case)?
There are two possibilities we're currently looking at, each with their own concerns.
The first is welding in a stainless steel socket, with the inner edge of the socket flush with the cement lining (repaired after socket is installed). The concern here being if the cement doesn't sit flush against the socket or breaks up over time, there is potential for water flow down to the weld, and hence a corrosion issue. Is this a known issue?
The second is a flanged connection, achieved by welding plain mild steel pipe to the outside of the main pipe, then cement lining the transition into the nozzle and likely up the nozzle to the flange. Alternatively we could just use MSCL and just have to repair the cement at the transition. Is this how a flanged connection would normally be achieved?
Any better ways to do this? Any input would be greatly appreciated.
Cheers,
Justin
