DIN 2635 PN 40 WELD NECK FLANGES

DIN 2635 PN 40 Weld Neck Flanges | #DIN 2635 Sch 40 Weld Neck Flange | #DIN 2635 PN 40 WNRF Flange | WNFF DIN 2635 | DIN 2635 PN 40 Weldneck Flange | DIN Weldneck Flange | #DIN 2635 PN 40 Weldneck Dimensions | DIN 2635 PN 40 weldneck flange schedule chart

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DIN 2635 PN 40 Weld Neck Flanges are generally used in high pressure applications, where hot or cold temperatures exist. These steel DIN 2635 weld neck flanges are circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography. These PN 40 weld neck flanges reduce the turbulence and erosion inside the pipeline because the bores of both pipe and flange match. This also reduces high stress concentration at the base of the hub of the PN weld neck pipe flange. Such weld neck are favoured in critical applications. The inside diameter of a PN 40 weld neck flange is machined to match the inside diameter of the pipe. Tesco Steel & Engineering manufacture a wide range of high quality DIN 2635 PN 40 Weld Neck Flanges in India.

DIN 2634 PN 25 WELD NECK FLANGE Dimensions

DIN 2635 PN 40 WELD NECK FLANGE Dimensions

Germany standard flange DIN 2635 welding neck flanges; nominal pressure 40

Pipe			Flange				Neck				Raised face		Screws			Weight
Pipe			Flange				Neck				Raised face		Screws			(7,85 Kg/dm3)
Rated	d1		D	b	k	h1	d3	s	r	h2	d4	f	Holes	Thread	d2	Kg
Diameter	ISO Series	DIN Series	D	b	k	h1	d3	s	r	h2	d4	f	Holes	Thread	d2	Kg
15	-	20	95	16	65	38	30	2	4	6	45	2	4	M 12	14	0,746
15	21,3	-	95	16	65	38	32	2	4	6	45	2	4	M 12	14	0,746
20	-	25	105	18	75	40	38	2,3	4	6	58	2	4	M 12	14	1,06
20	26,9	-	105	18	75	40	40	2,3	4	6	58	2	4	M 12	14	1,06
25	-	30	115	18	85	40	42	2,6	4	6	68	2	4	M 12	14	1,29
25	33,7	-	115	18	85	40	45	2,6	4	6	68	2	4	M 12	14	1,29
32	-	38	140	18	100	42	52	2,6	6	6	78	2	4	M 16	18	1,88
32	42,4	-	140	18	100	42	56	2,6	6	6	78	2	4	M 16	18	1,88
40	-	44,5	150	18	110	45	60	2,6	6	7	88	3	4	M 16	18	2,33
40	48,3	-	150	18	110	45	64	2,6	6	7	88	3	4	M 16	18	2,33
50	-	57	165	20	125	48	72	2,9	6	8	102	3	4	M 16	18	2,82
50	60,3	-	165	20	125	48	75	2,9	6	8	102	3	4	M 16	18	2,82
65	76,1	-	185	22	145	52	90	2,9	6	10	122	3	8	M 16	18	3,74
80	88,9	-	200	24	160	58	105	3,2	8	12	138	3	8	M 16	18	4,75
100	-	108	235	24	190	65	128	3,6	8	12	162	3	8	M 20	22	6,52
100	114,3	-	235	24	190	65	134	3,6	8	12	162	3	8	M 20	22	6,52
125	-	133	270	26	220	68	155	4	8	12	188	3	8	M 24	26	9,07
125	139,7	-	270	26	220	68	162	4	8	12	188	3	8	M 24	26	9,07
150	-	159	300	28	250	75	182	4,5	10	12	218	3	8	M 24	26	11,8
150	168,3	-	300	28	250	75	192	4,5	10	12	218	3	8	M 24	26	11,8
(175)	193,7	-	350	32	295	82	218	5,6	10	15	260	3	12	M 27	30	18,2
200	219,1	-	375	34	320	88	244	6,3	10	16	285	3	12	M 27	30	21,5
250	-	267	450	38	385	105	298	7,1	12	18	345	3	12	M 30	33	34,9
250	273	-	450	38	385	105	306	7,1	12	18	345	3	12	M 30	33	34,9
300	323,9	-	515	42	450	115	362	8	12	18	410	4	16	M 30	33	49,7
350	355,6	-	580	46	510	125	408	8,8	12	20	465	4	16	M 33	36	68,1
350	-	368	580	46	510	125	408	8,8	12	20	465	4	16	M 33	36	68,1
400	406,4	-	660	50	585	135	462	11	12	20	535	4	16	M 36	39	96,5
400	-	419	660	50	585	135	462	11	12	20	535	4	16	M 36	39	96,5
(450)	457	-	685	50	610	135	500	12,5	12	20	560	4	20	M 36	39	99,7
500	508	-	755	52	670	140	562	14,2	12	20	615	4	20	M 39	42	117

Diameters & Drilling of DIN Flanges (mm)

Flange Nominal Diameter	Pressure Rating (PN)
**Nominal BSP Pipe Size	PN6	PN10	PN16	PN25	PN40
DN 10	75	90	90	90	90	O.D.
3/8"	50	60	60	60	60	PCD (bolt circle)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	# of holes x diam. of holes
DN 15	80	95	95	95	95	O.D.
1/2"	55	65	65	65	65	PCD (bolt circle)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	# of holes x diam. of holes
DN 20	90	105	105	105	105	O.D.
3/4"	65	75	75	75	75	PCD (bolt circle)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	# of holes x diam. of holes
DN 25	100	115	115	115	115	O.D.
1"	75	85	85	85	85	PCD (bolt circle)
	4 x 11	4 x 14	4 x 14	4 x 14	4 x 14	# of holes x diam. of holes
DN 32	120	140	140	140	140	O.D.
1 1/4"	90	100	100	100	100	PCD (bolt circle)
	4 x 14	4 x 18	4 x 18	4 x 18	4 x 18	# of holes x diam. of holes
DN 40	130	150	150	150	150	O.D.
1 1/2"	100	110	110	110	110	PCD (bolt circle)
	4 x 14	4 x 18	4 x 18	4 x 18	4 x 18	# of holes x diam. of holes
DN 50	140	165	165	165	165	O.D.
2"	110	125	125	125	125	PCD (bolt circle)
	4 x 14	4 x 18	4 x 18	4 x 18	4 x 18	# of holes x diam. of holes
DN 65	160	185	185	185	185	O.D.
2 1/2"	130	145	145	145	145	PCD (bolt circle)
	4 x 14	4 x 18	4 x 18	8 x 18	8 x 18	# of holes x diam. of holes
DN 80	190	200	200	200	200	O.D.
3"	150	160	160	160	160	PCD (bolt circle)
	4 x 18	8 x 18	8 x 18	8 x 18	8 x 18	# of holes x diam. of holes
DN 100	210	220	220	235	235	O.D.
4"	170	180	180	190	190	PCD (bolt circle)
	4 x 18	8 x 18	8 x 18	8 x 22	8 x 22	# of holes x diam. of holes
DN 125	240	250	250	270	270	O.D.
5"	200	210	210	220	220	PCD (bolt circle)
	8 x 18	8 x 18	8 x 18	8 x 26	8 x 26	# of holes x diam. of holes
DN 150	265	285	285	300	300	O.D.
6"	225	240	240	250	250	PCD (bolt circle)
	8 x 18	8 x 22	8 x 22	8 x 26	8 x 26	# of holes x diam. of holes
DN 175		315	315	330	350	O.D.
7"		270	270	280	295	PCD (bolt circle)
		8 x 22	8 x 22	12 x 26	12 x 30	# of holes x diam. of holes
DN 200	320	340	340	360	375	O.D.
8"	280	295	295	310	320	PCD (bolt circle)
	8 x 18	8 x 22	12 x 22	12 x 26	12 x 30	# of holes x diam. of holes
DN 250	375	395	405	425	450	O.D.
10"	335	350	355	370	385	PCD (bolt circle)
	12 x 18	12 x 22	12 x 26	12 x 30	12 x 33	# of holes x diam. of holes
DN 300	440	445	460	485	515	O.D.
12"	395	400	410	430	450	PCD (bolt circle)
	12 x 22	12 x 22	12 x 26	16 x 30	16 x 33	# of holes x diam. of holes
DN 350	490	505	520	555	580	O.D.
14"	445	460	470	490	510	PCD (bolt circle)
	12 x 22	16 x 22	16 x 26	16 x 33	16 x 36	# of holes x diam. of holes
DN 400	540	565	580	620	660	O.D.
16"	495	515	525	550	585	PCD (bolt circle)
	16 x 22	16 x 26	16 x 30	16 x 36	16 x 39	# of holes x diam. of holes
DN 500	645	670	715	730	755	O.D.
20"	600	620	650	660	670	PCD (bolt circle)
	20 x 22	20 x 26	20 x 33	20 x 36	20 x 42	# of holes x diam. of holes
DN 600	755	780	840	845		O.D.
24"	705	725	770	770		PCD (bolt circle)
	20 x 24	20 x 27	20 x 33	20 x 36		# of holes x diam. of holes

O.D. = outside diameter PCD = bolt circle diameter PN = nominal pressure in bars
Note: (1 bar = 14.5 psi = 0.1 MPa = 100 KPa = 1.02 Kgf/cm²)

Advantages of using DIN 2635 PN 40 Weldneck Flanges

Weldneck flanges offer several advantages over other types of flanges, such as slip-on flanges. Here are some of the benefits of using weldneck flanges:

Superior Strength
Weldneck flanges have a long tapered hub that provides additional strength to the connection between the pipe and the flange. The welding process creates a permanent and durable bond that can withstand high pressure and extreme temperatures.

Versatility in Accommodating Different Pipe Sizes
Weldneck flanges are available in various sizes, making them suitable for use with pipes of different diameters. The flanges can also be used with pipes of different materials, such as stainless steel, carbon steel, and alloy steel.

Secure and Leak-Free Connection
The welding process creates a strong and leak-free connection between the pipe and the flange. This ensures that the piping system is safe and efficient, reducing the risk of leaks and other safety hazards.

Easy to Install and Maintain
Weldneck flanges are relatively easy to install, and the welding process can be completed quickly. The flanges are also easy to maintain, requiring only periodic inspection and maintenance to ensure that they are in good working condition.

Applications of DIN 2635 PN 40 Weldneck Flange

Weldneck flanges are used in various industrial piping applications, including:

Oil and Gas Industry
Weldneck flanges are commonly used in oil and gas piping systems, where they are used to transport crude oil, natural gas, and other petroleum products.

Chemical Processing Industry
Weldneck flanges are used in chemical processing plants to transport various chemicals and materials.

Water Treatment Industry
Weldneck flanges are used in water treatment plants to transport water and other fluids.

Power Generation Industry
Weldneck flanges are used in power generation plants to transport steam, gas, and other fluids.

Price List of Weldneck Flanges

Prices for DIN 2635 PN 40 Weldneck Flanges are very affordable.

Please click on the "Ask for Quote" button or click here to request the updated price list and ready stock information along with your requirement.
TESCO STEEL & ENGINEERING maintains a stock of all standard items and can export them at the best price.

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