... iron pipe and fittings use .pipe and fittings not only does the ductile iron have high tensile strength and percentage elongation ,but ... as anti-high-compression,anxi-oxidation,anti-corrosion,etc,so the ductile iron pipe fittings are widely applied to such compressive ... asia,their good quality has got a favorable appraisal from the end-users.1.pipe fitting Standards:ISO2531,EN545,EN598,BS47722 ...