DUOFLEX, DUOHARD protective pipes

DUOFLEX, DUOHARD protective pipes

Double-walled protective pipes (also called "corrugated pipes or "cable protection sleeves") are intended, primarlly, for mechanical protection of cables laid in excavations and cable trenches.

Generally, they are used for difficult section of cable routes such as, water courses, railway, crossing, motorways.
The pipes provide additional protection of water and gas supply lines, drainage or sloped sewers.

Material

DUOHARD - outer and inner walls are made of PE-HD.
DUOFLEX - outer walls are made of PE-HD, inner wall are made of PE-LD (for diameters of 40, 50 and 63 mm) and of PE-HD (for diameters from 75 mm).

Pipe design

outer wall - corrugated for higher mechanical strength of the pip.
inner wall - smooth for easy cable installation. Slight corrugation provides for excellent flexibility, does not reduce passage capacity through the pipe in bends and maintains high strength.

Colour design

outer wall - red, black or blue (standard colours)
inner wall - black (standard)

outer diameter	inner diameter	DUOFLEX		DUOHARD
outer diameter	inner diameter	standard production length (coils)	bend radius	standard production of rods	pallets length
mm	mm	m	m	m	m
40	32	50	0,20	-	-
50	40	50	0,23	-	-
63	51	50	0,26	-	-
75	61	50	0,29	6	552
90	75	50	0,33	6	600
110	94	50	0,37	6	456
125	105	50	0,40	6	408
160	136	50	0,43	6	168
200	171	25	0,50	6	162

Heat resistance

installation temperature: dandling PE-HD pipes within of -5ºC to + 50ºC
operation temperature: of -40ºC to +70ºC

Pipe connection

the pipes are connected using slide-on couplings
pipes of both production lengths are delivered with a coupling on one end

Drawing element and cable introduction

DUOFLEX protective pipes in coils have pre-installed drawing elements (PV-PAD, thickness 1,2 mm or PP string 12 500 dtex)
cables must be introduced into DUOFLEX and DUOHARD pipes via drawing (blowing-in not possible). Smooth inner walls provide for easy cable introduction into the pipe.

Storage

in horizontal position, maximum storage height 2 m
max storage time up to 3 months
it is not recommended to store in direct sunlight (to DN 160 does not contain UV stabilizer)

Pipe laying