TWIN PUF PE pipe
TWIN PUF PE pipe is a one-piece finished structure consisting of several pipes of small diameter, combined into a protective sheaths made of polyethylene, with the use of polyurethane foam insulation inside the protective sheaths.
Identification code review
Pipe – TWIN, St 10 – St 20 (GOST 10704-91/10705-80) 57х3.5 – St 3sp (GOST 3262-75) Dn25(33.5)x2.8 – 250 – PUF PE
Let’s review the symbols for marking the pipe:
- St 10 – St 20 – larger pipe steel grade;
- GOST 10704-91/10705-80 – longitudinal electrically welded pipe;
- 57 mm – larger pipe diameter;
- 3.5 mm – larger pipe wall thickness;
- St 3sp – smaller pipe steel grade;
- GOST 3262-75 – water-supply and gas-supply steel pipe;
- Dn25 (33.5) – smaller pipe diameter (inside and outside);
- 2.8 – smaller pipe wall thickness;
- 250 – pipe sheaths diameter;
- PUF – PE – polyethylene foam insulation, protective sheaths from polyethylene.
The scope of supply of the TWIN PUF PE pipe
1) PUF PE steel elbows
2) PUF PE steel T-pipes
3) PUF PE steel T-pipes complete with vent pipe ball valve
4) PUF PE parallel steel T-pipes
5) PUF PE steel tee branches
6) PUF PE steel tee branches with reducing connections
7) Sliding saddles
8) Fixed saddles
9) End fittings of PUF PE pipelines with looped conductors
10) PUF PE reducers
11) PUF PE ball valves
12) PUF PE U-shaped elements
13) PUF PE Z-shaped elements
14) PUF PE expansion bellows
15) PUF PE ball valves with vent pipe
16) PUF PE joint isolation sets