# 1988 Bath
A rwte for the marufaoture of large diameter polyethylene pipe fittings, based on a unique combination of mtommld- ing and irradiation, is pmposed. The method requires a low investment in twling but can give rise to pressure rated, mulded fittings, capable of being fusion jointed to polyethylene pipe. This should allow the creation of all welded polyethylene pipe systems. free of fabricated fittings, for diameters in excess of 500mm.