use type M, Type M is thicker, costs 20% more in materials

Actually if soldering well, it won't leak. 

For cold weather, you should have insulation for your pipe.

所有跟帖： 

• Yes type M is thicker. Is type L good enough? There is no -392- ♂ (42 bytes) () 08/15/2012 postreply 22:08:47

• type L is ok, but since you are paying the same labour, just us -比花花还花- ♂ (81 bytes) () 08/15/2012 postreply 22:34:23