Type	Main Tube Outer Diameter	Main Tube Inner Diameter	Type				External Dimensions
	OD	ID	a	b	c	d	ØＡ	ØＢ	E
NW 10	13.8	10.0	●				30.0	12.2	50.0
NW 10	13.8	10.0	●				30.0	12.2	70.0
NW 16	21.7	17.5				●	30.0	17.2	50.0
NW 16	21.7	16.0				●	30.0	17.2	70.0
NW 25	27.2	23.0	●				40.0	26.2	50.0
NW 25	27.2	24.0	●				40.0	26.2	50.0
NW 25	27.2	23.0	●				40.0	26.2	70.0
NW 40	42.7	37.1	●				55.0	41.2	50.0
NW 40	42.7	39.0	●				55.0	41.2	50.0
NW 40	42.7	37.1	●				55.0	41.2	70.0
NW 50	60.5	54.9		●			75.0	52.2	50.0
NW 50	60.5	57.2		●			75.0	52.2	50.0
NW 63	76.3	70.2			●		87.0	70.2	50.0