| Pipe diameter, mm | 57/25 |
| Pipe-sheath wall thickness, mm | 0.7 |
| Insulation layer thickness, mm | 250 |
| Pipe diameter, mm | 57/32 |
| Pipe-sheath wall thickness, mm | 0.7 |
| Insulation layer thickness, mm | 250 |
| Pipe diameter, mm | 57/40 |
| Pipe-sheath wall thickness, mm | 0.7 |
| Insulation layer thickness, mm | 250 |
| Pipe diameter, mm | 57/57 |
| Pipe-sheath wall thickness, mm | 0.7 |
| Insulation layer thickness, mm | 250 |
| Pipe diameter, mm | 76/32 |
| Pipe-sheath wall thickness, mm | 0.7 |
| Insulation layer thickness, mm | 250 |
TWIN PUF ZP pipe
TWIN PUF ZP pipe – is a type of PUF pipelines in ZP sheaths. A distinctive feature is the combination of several small diameter pipes into a single structure.
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 ZP
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 – ZP – polyethylene foam insulation, zinc plated protective sheaths.
The scope of supply of the TWIN PUF ZP pipe
1) PUF ZP steel elbows
2) PUF ZP steel T-pipes
3) PUF ZP steel T-pipes complete with vent pipe ball valve
4) PUF ZP parallel steel T-pipes
5) PUF ZP steel tee branches
6) PUF ZP steel tee branches with reducing connections
7) Sliding saddles
8) Fixed saddles
9) End fittings of PUF ZP pipelines with looped conductors
10) PUF ZP reducers
11) PUF ZP ball valves
12) PUF ZP U-shaped elements
13) PUF ZP Z-shaped elements
14) PUF ZP expansion bellows
15) PUF ZP ball valves with vent pipe
16) PUF ZP joint isolation sets
