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RI 89PD 1P

m         =          4 mm
n          =          12 mm
CH       =          14 mm for 20SD
                        18 mm for 25SD
                        22 mm for 30SD
                        28 mm for 35SD
           
Pipe Thk. tolerance (-10%)
A-Class = 3.2 mm
B-Class = 4.0 mm
C-Class = 4.8 mm
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