A flexible container is provided. The flexible container includes four panels. The four panels form (i) a body portion; (ii) a neck portion, and a flare portion that extends from the neck portion; (iii) a tapered transition portion between the body portion and the neck portion; and (iv) the neck portion has a reduced width. The flare portion has an expanded end. The width of the flare portion gradually increases from the neck portion to the expanded end.

A flexible container is provided. The flexible container includes four panels. The four panels form (i) a body portion; (ii) a neck portion, and a flare portion that extends from the neck portion; (iii) a tapered transition portion between the body portion and the neck portion; and (iv) the neck portion has a reduced width. The flare portion has an expanded end. The width of the flare portion gradually increases from the neck portion to the expanded end.

A machine for welding saddle connectors by polywelding, during pipe laying, includes a base which extends in a first direction, a clamp which can move along the base in the first direction, a bracket mounting means for detachably coupling the machine to a pipe arranged transversely to the first direction, and a means for detachably coupling the base to the bracket mounting means.

A production line for PFCs with FMDs includes a conveyor system, a supply system, and an installation system. The conveyor system is operable to convey PFCs. The supply system includes a roller stage. The roller stage operable to feed FMDs. The installation system includes an installation tool. The installation tool includes a mandrel, a platen, a platen heater, and a platen actuator. The installation tool is configured to receive FMDs from the roller stage in part around the mandrel and in part around the platen, configured to insert into PFCs on the conveyor system, and operable to install FMDs thereto by the operation of the platen heater to heat the platen and the platen actuator to radially expand the platen.