ABS alloy pipe and special cold melt is one widely used in building water supply and central air conditioning, especially in building water supply riser tube and central air conditioning applications. PC / ABS alloys can also be produced automotive exterior parts such as automotive wheel covers mirror cover, tail lamp. PC / ABS has good formability, machinability large automotive parts such as car fenders. Alloy tube as an important part of iron and steel products, because of its manufacturing process and used a tube shape is divided into seamless steel pipe (round billet) and welded steel (sheet, strip) two categories. Palladium pipe principle of the purified hydrogen is 300-500 ° C under hydrogen to be purified is passed through one side of the palladium tube when hydrogen is adsorbed on the palladium on the wall due to the palladium 4d electron shell missing two electrons can not hydrogen generating stable chemical bond (palladium with hydrogen, this reaction is reversible) palladium