GRP Pipeline

Instead of duplicating this thread hither and yon, it might help to focus on just one thread. The first and third of these processes are just different names for basically the same thing, namely winding a continuous fiberglass filament back and forth along the length of a rotating mandrel, filling in the gaps with plastic resin. I'm not sure about the second, but I suspect that it consists of a slurry of short fiberglass filaments within a liquid matrix of plastic resin, spun rapidly against an outer mold to form a pipe. Just guessing, though.

Ok I get "in wine ther is truth"....all too often I have had wine talking to me from across the room.

And in water a dead deer up stream.

but an opera in beer has me thrown off a bit unless you are Referring to Carmen Electra, but she shows up any time I am drinking.

Yous is easy, and yes I do, however on a nice cool spring day Commando is good as well, and refreshing.

Cervisia = beer (compare with Sp. cerveza).
Carmen = song (plural carmina, as in "Carmina Burana")

(I adapted this slightly from the slogan of a microbrewery some friends once owned.)

Very Nice

Why does it matter? I think Tornado has given you the basics. I also think that the casual observer, that's you, couldn't tell the difference by looking at the pipes anyway.

If you really want to know, ask the suppliers who make the various types of pipe.