Ductile iron pipe with Tyton Joint K9 Class
HANYCO is manufacturer of ductile iron pipe and fittings with tyton push on joint from DN80 to DN800 with 6m nominal length. K9 class ductile iron pipe and fittings are producing according to requirements of ISO2531-1998 international standard. The nominal iron wall thickness of pipes and fittings shall be calculated as a function of the nominal size, DN, by the following formula, with a minimum of 6 mm for centrifugally cast pipes and 7 mm for pipes not centrifugally cast and fittings:
e = K (0,5 + 0,001 DN)
e is the nominal wall thickness, in millimeters;
DN is the nominal size;
K is a coefficient used for thickness class designation. It is selected from a series of whole numbers: 7, 8, 9, 10, 11, 12, ….