... , economic, disassemble, maintenance,5 but pressure drainage, aging resistance, long life, general and simple, reliable, connected not anticorrosive ... high cost frit,3 PaiSuan, can be used for chemical resistance, corrosion PaiJian liquid, etc.4 curved, pipe installation ... for corporations, the corrosion of acid wastewater discharge laboratory,6 alternative drainage iron pipe.Update Date:2010/6 ...