Rigid pipes of plastic; junctions for rigid pipes, not of metal

'junction':5 'metal':11 'pipe':2,8 'plastic':4 'rigid':1,7

Junctions for flexible pipes, not of metal

'flexibl':3 'junction':1 'metal':7 'pipe':4

Mounting parts for pipelines, not of metal, namely, [ pipe clips, ] mounting plates, pipe brackets, pipe clamps, pipe flanges, pipe flange adaptors, and pipe adapters for concealed valves

'adapt':24 'adaptor':21 'bracket':14 'clamp':16 'clip':10 'conceal':26 'flang':18,20 'metal':7 'mount':1,11 'name':8 'part':2 'pipe':9,13,15,17,19,23 'pipelin':4 'plate':12 'valv':27

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