Nominal	Strength     class	Jointing system	Average wt. per piece
size
DN
mm			kg
100	34	F	1
150	34	F	3
200	160	F	5
200	160	C	5
250	160	C	9
300	160	C	14
350	160	C	19
400	120	C	20
450	160	C	34
500	120	C	30
600	95	C	47