installed fittings must be cut out and discarded. In addition, the cutting required to remove the fitting often will leave insufficient tubing to install the new fitting, So couplers and additional tubing will need to be installed on either side of the replacement fitting. Whereas with a soldered fitting, a defective joint can just be re-soldered, or heated and turned if a minor change is required, or heated and removed without requiring any of the tubing to be cut away. This also allows more expensive fittings like valves to be re-used if they are otherwise in good to new condition, something not possible if the fitting is crimped on. The cost of the tooling is very expensive. , a basic toolkit required to sweat solder all the copper pipes of a typical single family residence, including fuel and solder, can be purchased for approximately $200. By contrast, the minimum cost of a basic powered crimping tool starts at around $1800, and can be as high as $4000 for the better brands with a complete set of crimping dies. Aluminium pipe Aluminium is sometimes used due to its low cost, resistance to corrosion and solvents, and its ductility. Aluminium tube is more desirable than steel for the conveyance of flammable solvents, since it cannot create sparks when manipulated. Aluminium tubing can be connected by flare or compression fittings, or it can be welded by the TIG or heliarc processes. Glass pipe Tempered glass pipes are used for specialized applications, such as corrosive liquids, medical or laboratory wastes, or pharmaceutical manufacturing. Connections are generally made using specialized gasket or O-ring fittings. Plastic pipe Plastic pipes used in manufacturing. Plastic pipe fittings include PVC pipe fittings, PP / PPH pipe fitting mould, PE pipe and ABS pipe fitting. See also British standard pipe thread Cast iron pipe Copper tubing Double-walled pipe Ductile iron pipe Galvanized pipe Garden hose HDPE pipe Hollow structural section Hose Hydraulic pipes List of equations in fluid mechanics MS Pipe, MS Tube National pipe thread Nominal Pipe Size Panzergewinde Pipe and tube bender Pipeline transport Pipe support Piping Piping and plumbing fittings Plastic pressure pipe systems Plastic pipework Plumbing Reinforced thermoplastic pipes Trap (plumbing) Tube Tube beading Victaulic Water pipe References Bibliography External links Irrigation Piping Plumbing