Manhole covers of metal; Metal pipe fittings; Fittings of metal for pipes; Metal castings for construction and municipal use; Iron fittings for ducts; Hubless cast iron pipe for use in soil; Metal pipe couplings and fittings for hubless, cast iron pipe; Metal expansion joints for iron piping and ducting; Metal joint restraints for ductile iron pipes; Metal fasteners, namely, joint restraints for PVC pipes; Metal fasteners, namely, joint restraints for iron duct piping

'cast':14,25,39 'construct':16 'coupl':34 'cover':2 'duct':23,49,72 'ductil':54 'expans':43 'fasten':58,66 'fit':7,8,21,36 'hubless':24,38 'iron':20,26,40,46,55,71 'joint':44,51,60,68 'manhol':1 'metal':4,5,10,13,32,42,50,57,65 'municip':18 'name':59,67 'pipe':6,12,27,33,41,47,56,64,73 'pvc':63 'restraint':52,61,69 'soil':31 'use':19,29

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