piping, reticulation, downpipe, guttering, mains, stopcock, steelwork, duct, ductwork, soakaway, cladding, sump, floor joist, flue pipe, flues, fittings, earthing, chimney stack, ballcock, clarifiers, underdrain, gasometer, immersion heater, boilers, hose, joinery, heat exchanger, gasholder, oxyacetylene, flashings, transite, kerbing, condenser, piston rod, penstock, drainpipes, fastenings, louvres, valves, crossness, sleeving, polybutylene, formwork, radiators, sewerage, bushing, busbar, cabling, cremator, flanges, gasworks, manway, outfall, inlet manifold, impellers, cementation, brickwork, soffits, downspouts, plumbing, platens, swarf, firebox, gyratory, underfloor, standpipe, corrugation, sheave, grouting, effluent, prestressed, furnace, reclaimer, hardstand, tumble drier, slurry, clarifier, chimney, keyways, thorite, refurbishment, plasterboard, gasket, upflow, macerator, timberwork, firebrick, pintle, setts, subfloor, ferrule, flagstones, downspout, manifolds, capillary tubing, weldment, contactor, backflow, wiring, mandrel, footway, tarmacadam, pipelines, ducting, anodes, burner, heaters, pipe, reservoirs, shafting, tanks, tubing, wires, anode, boiler, casing, diaphragm

flue, labial pipe, organ stop, reed pipe

organ, pipe organ

wind, wind instrument

organ pipe