JIS B2220 PIPE FLANGE DIMENSIONS TOLERANCE

PDF: JIS B2220 PIPE FLANGE DIMENSIONS TOLERANCE

JIS B2220 PIPE FLANGE DIMENSIONS TOLERANCE

Flange tolerance.   Dimensions in mm.

Flange Section		Surface Condition	Basic Size	Dimensional Tolerance
outside dia. D		as forged(1)	300&below	+not specified                     -2
			over 300 thru 600
			over 600 thru 1000
			over 1000 thru 1500	+not specified     -3
			over 1500
		finish	300&below	1
			over 300 thru 600	1.5
			over 600 thru 1000	2
			over 1000 thru 1500	2.5
			over 1500	3
inside dia	solid flange d(2)	as forged(1)	16&below	1
			over 16 thru 63	1.5
			over 63 thru 125	2
			over 125 thru 150	2.5
			over 250 thru 500	3
			over 500 thru 1000	4
			over 1000	5, 0
	slip-on flange do	finish	100&below	+0.5, 0
			over 100 thru 400	+1, 0
			over 400 thru 600	+1.5, 0
			over 600 thru 800	+2.0, 0
			over 800 thru 1000	+2.5, 0
			over 1000	+3, 0
	welding neck flange d		100&below	0, -0.5
			over 100 thru 400	0, -1
			over 400 thru 600	0, -1.5
			over 600 thru 800	0, -2
			over 800 thru 1000	0, -2.5
			over 1000	0, -3
bolt hole	bolt circle dia. c		250&below	0.5
			over 250 thru 550	0.6
			over 550 thru 950	0.8
			over 950 thru 1350	1
			over 1350	1.5

Flange Section		Surface Condition	Basic Size	Dimensional Tolerance
			–	0.5
Dia. of hub	Slip-on flange (a) and welding neck flange(d 1)	As forged	220&below	+2, 0
			over 220 thru 450	+3, 0
			over 450 thru 650	+4, 0
			over 650 thru 850	+6, 0
			over 850 thru 1000	+7, 0
			over 1000	+8, 0
		Finish	220&below	+1, 0
			over 220 thru 450	+1.5, 0
			over 450 thru 650	+2, 0
			over 650 thru 850	+2.5, 0
			over 850 thru 1000	+3, 0
			over 1000	+3.5, 0
Gasket seat	c1,c2,c3, c4	Finish	500&below	0.3
			over 500 thru 1000	0.35
			over1000 thru 1500	0.4
			over1500	0.5
	f4f3	Finish	8&below	0.2
			over 8	0.25
	g	Finish	200&below	0.8
			over 200 thru 650	0.9
			over 650 thru 1000	1
			over 1000	1.2
Thickness t		One-side finish	20&below	+1.5, 0
			over 20 thru 50	+2, 0
			over50 thru 100	+3, 0
		Bolt-side finish	20&below	+1, 0
			over 20 thru 50	+1.5, 0
			over 50 thru 100	+2, 0
Hub Height T	Flange with Pipe Inserted	Finish	50&below	1
			over 50 thru 100	1.5
			over 100 thru 200	2
	Flange with Bolt-welded Pipe	Finish	over 200&below	+2, 0
			over 200 thru 300	+3, 0