DUOFLEX, DUOHARD protective pipes

DUOFLEX, DUOHARD protective pipes

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

they are perticularly suitable for demanding sections of cable routes, such as watercourses, railway crossings and roads
the pipes can also be used to protect water and gas pipilines, drainage systems and gravity sewers

Material

DUOHARD - outer and inner walls are made of HDPE
DUOFLEX - outer walls are made of HDPE, inner walls are made of LDPE+MDPE (diameters of 40, 50 and 63 mm), HDPE+LDPE (diameters 75 and 90 mm) or HDPE (diameters 110 mm and above)

Design

outer wall - corrugated
inner wall - smooth (slight corrugation provides excellent flexibility without reducing the cable passage in bends while maintaining high mechanical strength)
pipes in standard lengths are supplied with a factory-fitted coupling on one end

Colour

outer wall - red, black or blue
inner wall - black

outer diameter	inner diameter	DUOFLEX			DUOHARD
outer diameter	inner diameter	coil length	minimum bending radius	pallet length	rod length	pallet length
mm	mm	m	m	m	m	m
40	32	50	0.20	1200	-	-
50	40	50	0.23	400	-	-
63	51	50	0.26	-	-	-
75	61	50	0.29	350	-	-
90	75	50	0.33	300	-	-
110	94	50	0.37	200	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

handling temperature: 0 ºC to + 50 ºC
operation temperature: -40 ºC to +70 ºC
storage temperature: -40 ºC to +60 ºC

Mechanical resistance

high mechanical resistance owing to the corrugated outer wall
excellent impact resistance even at low temperatures
minimum compression resistance: min. 450 N / 200 mm (code 450)
impact resistance: normal (code N)

Pipe connection

pipes are connected using slip couplings

Drawing element and cable installation

DUOFLEX protective pipes in coils (25 m and 50 m) are supplied with a factory-installed draw cord (PV-PAD tape, 1.2 mm thick, or PP cord, 12,500 dtex)
cables must be installed by pulling; blowing is not possible
smooth inner walls ensure easy cable installation

Storage

coils must be stored in a horizontal position; maximum stacking height: 2,8 m; maximum storage time: 3 months
storage in direct sunlight is not recommended. Pipes with diameters of DN 40, 50, 63, 75 and 110 do not contain a UV stabiliser. Pipes with diameters of DN 90, 125, 160 and 200 contain UV stabiliser
ambient conditions must comply with ETS 300 019-1-1, class 1.3E

Laying

observe all applicable laws, regulations and technical standards when installing protective pipes for power and communication cables
to ensure the required mechanical strength of the protective pipes, follow the installation instructions issued by MATEICIUC a.s.
avoid bending radii smaller than specified and excessive force when installing couplings and fittings. Observe the maximum allowable load
protect the pipe ends during installation to prevent dirt from entering the pipe, which could damage the cable
after installing the cable, seal both pipe ends to prevent dirt ingress
seal the ends of any unused pipes (if installed)