Types of laying

Ductile cast iron pipelines are suitable for all soil types, thast’s why we offer a comprehensive PAM network that can adapt to any environmental or soil conditions.

Recommanded self-anchoring solutions for different locations and pipe-laying techniques
Pipeline location	Laying technique	Insert type anchoring	Bead type anchoring
Buried	Open trench	STANDARD Vi, UNIVERSAL Vi, EXPRESS Vi and STANDARD V+i	UNIVERSAL Ve, PAMLOCK and STANDARD Ve
	Directional drilling	Cannot be used	UNIVERSAL Ve
	Underwater laying	Cannot be used	UNIVERSAL Ve, PAMLOCK, STANDARD Ve
	Casing	STANDARD Vi et UNIVERSAL Vi Usable for short, straight sleeves	UNIVERSAL Ve, PAMLOCK, STANDARD Ve
	Bridge	STANDARD Vi, EXPRESS Vi and UNIVERSAL Vi For short-span bridges only	UNIVERSAL Ve, STANDARD Ve All types of bridges, including long-span
Above ground	Tunnels and technical areas	STANDARD Vi, EXPRESS Vi, UNIVERSAL Vi and STANDARD V+i Hydraulic thrust forces compensated by suitable support devices	UNIVERSAL Ve, STANDARD Ve Hydraulic thrust forces compensated by suitable support devices
Buried or above ground	Steep incline	STANDARD Vi, EXPRESS Vi, UNIVERSAL Vi and STANDARD V+i Compensate sliding loads at top of slope and, if slope is long, at several points along the slope	UNIVERSAL Ve, STANDARD Ve and PAMLOCK Compensate sliding loads at top of slope and, if slope is long, at several points along the slope

Aerial pipelaying

Laying of a main above ground involves determining : the support system, the accommodation of thermal expansion and the anchorage of components subjected to hydraulic thrust.

Pipe laying in casings

Laying of a carrier pipe through a casing involves: the centring and guidance of each component within the casing, anchoring the components together to allow pulling of the section through the casing.

Pipe laying through tunnels

Laying a socket pipe system through a tunnel involves: support, accommodation of thermal expansion and anchorage of components subjected to hydraulic thrust.

Underwater pipe laying

A drinking water supply or irrigation project can include an underwater section: crossing a stream on the pipe route, intake in a lake or impounding reservoir in altitude, laying along a stream bed.

Steep incline pipelaying

Laying of ductile iron mains on steep inclines can be performed in two ways: using concrete blocks for each pipe, using a concrete block at the head of an anchored length.

Trenchless pipe laying

Ductile iron pipes DN 60 to 1000 can be laid without a trench using either techniques: new pipe laying by horizontal directional drilling (HDD), or trenchless replacement of existing pipes.

Bridge crossing pipe laying

Bridge crossing with a push-in joint involves determining: the support system, the accommodation of both bridge and main thermal expansions, the anchoring of components subjected to hydraulic thrust, and the protection against freezing, if necessary.