Steel pipe flange covers

Description

They are flanges without holes in the middle, for the purpose of sealing pipe stoppers. There are many kinds of sealing face forms, including flat faces, raised faces, male and female faces, tongue and groove faces, and ring joint faces.

Flange cover sealing face

Flat faces (FF), raised faces (RF), male and female faces, tongue and groove faces (TG), ring joint faces (RJ)

HG20601-97 products in the steel pipe flange series (mm)

Sealing face type	Nominal pressure PN, MPA (bar)
	0.25 (25)	0.6 (6)	1.0 (10)	1.6 (16)	2.5 (25)	4.0 (40)	6.3 (63)	10.0 (100)	16.0 (160)	25.0 (250)
Raised face (RF)	DN10~2000		DN10~1200		DN10~600		DN10~400		DN10~300
Male and female faces (MFM)	–		DN10~600				DN10~400		DN10 ~300	–
Tongue and groove faces (TG)	–		DN10~600				DN10~400		DN10 ~300	–
Whole flat face (FF)	DN10~600		DN10~1200		–
Ring joint faces (RJ)	–						DN15~400		DN15~400

HG20601-97PN25.0MPa(250bar) products in the steel pipe flange series (mm)

Inside nominal diameter	Connection size					Flange cover Height	Flange cover Theoretical weight
Inside nominal diameter	Flange cover Outer diameter	Bolt hole Central circle diameter	Bolt hole Diameter	Bolt hole Quantity	Thread	Flange cover Height	Flange cover Theoretical weight
DN	D	K	L	n	Th	C	(Kg)
10	125	85	18	4	M16	24	1.12
15	130	90	18	4	M16	26	2.5
20	135	95	18	4	M16	28	2.92
25	150	105	22	4	M20	28	3.55
32	165	120	22	4	M20	32	4.99
40	185	135	26	4	M24	34	6.6
50	200	150	26	8	M24	38	8.1
65	230	180	26	8	M24	42	12.3
80	255	200	30	8	M27	46	16.4
100	300	235	33	8	M30×2	54	27
125	340	275	33	12	M30×2	60	37.9
150	390	320	36	12	M33×2	68	57.2
200	485	400	42	12	M39×2	82	108.2
250	585	490	48	16	M45×2	100	188.2
300	690	590	52	16	M48×2	120	320.1

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Steel pipe flange covers