Flat Welding Flange

Flat Welding Flange is mainly used for the connection of two pipe fittings, which are firstly inserted into the internal control of the flange and adjusted to the proper position, and then welded. The sealing effect of the flange is good or bad, depends entirely on the application of the flange gasket, and at the same time with bolts for fixing.

Overview

Application:

1. Usually used for pipeline connection under low pressure and low temperature, such as water supply, drainage, HVAC and other systems.

2. Suitable for pipeline connection under high temperature and pressure, strong corrosion, flammable and explosive, toxic and hazardous working conditions.

3. Flat welding flanges are suitable for connecting pipelines with small diameters, generally below DN80.

4. Flat welding flanges are mostly used for the connection of metal pipelines, and can also be used in non-metallic pipelines.

Picture:

Flat Welding Flange2.jpg

DN	A	B	D	K	L	n	Th	C	A	B	Kg
10	17.2	14	90	60	14	4	M12	14	18	15	0.61
15	21.3	18	95	65	14	4	M12	14	22	19	0.68
20	26.9	25	105	75	14	4	M12	16	27.5	26	0.94
25	33.7	32	115	85	14	4	M12	16	34.5	33	1.12
32	42.4	38	140	100	18	4	M16	18	43.5	39	1.86
40	48.3	45	150	110	18	4	M16	18	49.5	46	2.12
50	60.3	57	165	125	18	4	M16	20	61.5	59	2.77
65	76.1	76	185	145	18	4	M16	20	77.5	78	3.31
80	88.9	89	200	160	18	8	M16	20	90.5	91	3.59
100	114.3	108	220	180	18	8	M16	22	116	110	4.57
125	139.7	133	250	210	18	8	M16	22	141.5	135	5.65
150	168.3	159	285	240	22	8	M20	24	170.5	161	7.61
200	219.1	219	340	295	22	8	M20	24	221.5	222	9.24
250	273	273	395	350	22	12	M20	26	276.5	276	11.9
300	323.9	325	445	400	22	12	M20	28	327.5	328	14.6
350	355.6	377	505	460	22	16	M20	30	359.5	381	18.9
400	406.4	426	565	515	26	16	M24	32	411	430	24.4
450	457	480	615	565	26	20	M24	35	462	485	27.9
500	508	530	670	620	36	20	M24	38	513.5	535	34.9
600	610	630	780	725	30	20	M27	42	616.5	636	48.1