Hargreaves Halifax HD4001 100mm Cast Iron Grey Double Spigot Drain Pipe 3m

The Halifax HD4001 is a 100mm double spigot drain pipe from Hargreaves Foundry's Halifax Drain range, designed for buried below ground drainage and wastewater systems. It forms part of a socketless, mechanically jointed cast iron system that joins pipe to pipe and pipe to fitting using a separate coupling rather than a traditional spigot and socket joint.

Material and coating

• Casting - Grey cast iron manufactured to BS EN 877, with dimensions and wall thickness controlled to the tolerances set out in the standard.
• External coating - Minimum average 170 microns of 2-pack epoxy, thicker than the above ground Halifax Soil range to give greater resistance to the chemical conditions found below ground.
• Internal coating - Minimum average 130 microns of yellow 2-pack epoxy, tested for chemical resistance between pH2 and pH12 and a 30 day waste water test at 23C.

Installation

• Cutting - Pipes can be cut to length on site using a powered chop saw or disc cutter fitted with a metal cutting disc; cut ends should be touched up with a high quality metal primer once burrs are removed.
• Jointing - Connects to other Halifax Drain pipes and fittings using Halifax ductile iron or push fit couplings, not a caulked socket joint.
• Bedding - Should be laid in a trimmed trench with 50mm clearance beneath each coupling joint, on a flat, continuously supported base.

Full dimensions, coating specifications and installation guidance are set out in the manufacturer's Halifax Technical Guide.