Long Weld Neck Flanges

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Long Weld Neck Flanges Manufacturer, Supplier and Exporter in Dubai, UAE

Jinay Metals is a reputable manufacturer and supplier of high-quality Long Weld Neck Flanges and it is located in Dubai, UAE. Having years of experience in the industry, we have provided precision-engineered flanges, which are supposed to be durable and reliable and provide excellent performance in high pressure and high temperature applications. Our products are of international specifications and are extensively utilized in the oil and gas industry and petrochemical industry as well as the power generation industry. In our project at Jinay Metals, we focus on quality, customer satisfaction, and timely delivery of our projects.

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Long weld neck flanges are usually manufactured from durable materials such as stainless steel, carbon steel, alloy steel, duplexes, and nickel alloys for high strength and corrosion resistance. These materials usually contain chromium, nickel, and molybdenum to improve its durability and heat resistance. From a mechanical standpoint, the long weld neck flanges have high yield strength, tensile strength, and hardness, and can handle pressure and temperature fluctuations very well. The long neck gives it extra reinforcement to help minimize stress concentration. Long weld neck flanges can provide excellent service in high demanding industrial applications or high-pressure piping applications.

Long Weld Neck Flanges Specification

Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175
Size	1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Standards	ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Pressure Rating ANSI	Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500
Pressure Calculation in DIN	6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
UNI	6Bar 10Bar 16Bar 25Bar 40Bar
EN	6Bar 10Bar 16Bar 25Bar 40Bar
Coating	Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Test Certificates	EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc
Production Technique	Forged, Heat treated and machined
Connect Type/ Flange Face Type	Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)
Special design	As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations
Test	Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment	Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Material	Inconel Long Weld Neck Flange, Incoloy Long Weld Neck Flange, Monel Long Weld Neck Flange, Hastelloy Long Weld Neck Flange, Copper Nickel Long Weld Neck Flange, Alloy 20 Long Weld Neck Flange, Nickel Alloy Long Weld Neck Flange, AISI 4130 Long Weld Neck Flange, Titanium Long Weld Neck Flange, Brass Long Weld Neck Flange, Stainless Steel Long Weld Neck Flange, Duplex Steel Long Weld Neck Flange, Super Duplex Long Weld Neck Flange, SMO 254 Long Weld Neck Flange.

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose Long Weld Neck Flanges from Jinay Metals?

Choosing Long Weld Neck Flanges from Jinay Metals ensures unmatched quality and long-lasting performance. These Flanges are engineered for superior corrosion resistance, strength, and precision, making them ideal for a wide range of industrial applications. With a strong focus on customer satisfaction, timely delivery, and technical expertise. Jinay Metals providing reliable and high-performance Long Weld Neck Flanges tailored to meet your specific operational and project requirements.

Long Weld Neck Flanges Dimensions

Class 150 Long Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	Machine Bolt Length	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	90	9.6	30	21.3	34.9	2	60.3	As Required	4	1/2	50	55	5/8	M14
3/4	20	100	11.2	38	26.7	42.9	2	69.9	As Required	4	1/2	50	65	5/8	M14
1	25	110	12.7	49	33.4	50.8	2	79.4	As Required	4	1/2	55	65	5/8	M14
1 1/4	32	115	14.3	59	42.2	63.5	2	88.9	As Required	4	1/2	55	70	5/8	M14
1 1/2	40	125	15.9	65	48.3	73	2	98.4	As Required	4	1/2	65	70	5/8	M14
2	50	150	17.5	78	60.3	92.1	2	120.7	As Required	4	5/8	70	85	3/4	M16
2 1/2	65	180	20.7	90	73	104.8	2	139.7	As Required	4	5/8	75	90	3/4	M16
3	80	190	22.3	108	88.9	127	2	152.4	As Required	4	5/8	75	90	3/4	M16
3 1/2	90	215	22.3	122	101.6	139.7	2	177.8	As Required	8	5/8	75	90	3/4	M16
4	100	230	22.3	135	114.3	157.2	2	190.5	As Required	8	5/8	75	90	3/4	M16
5	125	255	22.3	164	141.3	185.7	2	215.9	As Required	8	3/4	85	95	7/8	M20
6	150	280	23.9	192	168.3	215.9	2	241.3	As Required	8	3/4	85	100	7/8	M20
8	200	345	27	246	219.1	269.9	2	298.5	As Required	8	3/4	90	110	7/8	M20
10	250	405	28.6	305	273	323.8	2	362	As Required	12	7/8	100	115	1	M24
12	300	485	30.2	365	323.8	381	2	431.8	As Required	12	7/8	100	120	1	M24
14	350	535	33.4	400	355.6	412.8	2	476.3	As Required	12	1	115	135	1 1/8	M27
16	400	595	35	457	406.4	469.9	2	539.8	As Required	16	1	115	135	1 1/8	M27
18	450	635	38.1	505	457.2	533.4	2	577.9	As Required	16	1 1/8	125	145	1 1/4	M30
20	500	700	41.3	559	508	584.2	2	635	As Required	20	1 1/8	140	160	1 1/4	M30
24	600	815	46.1	663	610	692.2	2	749.3	As Required	20	1 1/4	150	170	1 3/8	M33

Class 300 Long Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	Machine Bolt Length	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	95	12.7	38	21.3	34.9	2	66.7	As Required	4	1/2	55	65	5/8	M14
3/4	20	115	14.3	48	26.7	42.9	2	82.6	As Required	4	5/8	65	75	3/4	M16
1	25	125	15.9	54	33.4	50.8	2	88.9	As Required	4	5/8	65	75	3/4	M16
1 1/4	32	135	17.5	64	42.2	63.5	2	98.4	As Required	4	5/8	70	85	3/4	M16
1 1/2	40	155	19.1	70	48.3	73	2	114.3	As Required	4	3/4	75	90	7/8	M20
2	50	165	20.7	84	60.3	92.1	2	127	As Required	8	5/8	75	90	3/4	M16
2 1/2	65	190	23.9	100	73	104.8	2	149.2	As Required	8	3/4	85	100	7/8	M20
3	80	210	27	117	88.9	127	2	168.3	As Required	8	3/4	90	110	7/8	M20
3 1/2	90	230	28.6	133	101.6	139.7	2	184.2	As Required	8	3/4	95	110	7/8	M20
4	100	255	30.2	146	114.3	157.2	2	200	As Required	8	3/4	95	115	7/8	M20
5	125	280	33.4	178	141.3	185.7	2	235	As Required	8	3/4	110	120	7/8	M20
6	150	320	35	206	168.3	215.9	2	269.9	As Required	12	3/4	110	120	7/8	M20
8	200	380	39.7	260	219.1	269.9	2	330.2	As Required	12	7/8	120	140	1	M24
10	250	445	46.1	321	273	323.8	2	387.4	As Required	16	1	140	160	1 1/8	M27
12	300	520	49.3	375	323.8	381	2	450.8	As Required	16	1 1/8	145	170	1 1/4	M30
14	350	585	52.4	425	355.6	412.8	2	514.4	As Required	20	1 1/8	160	180	1 1/4	M30
16	400	650	55.6	483	406.4	469.9	2	571.5	As Required	20	1 1/4	165	190	1 3/8	M33
18	450	710	58.8	533	457	533.4	2	628.6	As Required	24	1 1/4	170	195	1 3/8	M33
20	500	775	62	587	508	584.2	2	685.8	As Required	24	1 1/4	185	205	1 3/8	M33
24	600	915	68.3	702	610	692.2	2	812.8	As Required	24	1 1/2	205	230	1 5/8	M39

Class 400 Long Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	95	14.3	38	21.3	34.9	7	66.7	As Required	4	1/2	75	5/8	M14
3/4	20	115	15.9	48	26.7	42.9	7	82.6	As Required	4	5/8	90	3/4	M16
1	25	125	17.5	54	33.4	50.8	7	88.9	As Required	4	5/8	90	3/4	M16
1 1/4	32	135	20.7	64	42.2	63.5	7	98.4	As Required	4	5/8	95	3/4	M16
1 1/2	40	155	22.3	70	48.3	73	7	114.3	As Required	4	3/4	110	7/8	M20
2	50	165	25.4	84	60.3	92.1	7	127	As Required	8	5/8	110	3/4	M16
2 1/2	65	190	28.6	100	73	104.8	7	149.2	As Required	8	3/4	120	7/8	M20
3	80	210	31.8	117	88.9	127	7	168.3	As Required	8	3/4	125	7/8	M20
3 1/2	90	230	35	133	101.6	N/A	7	184.2	As Required	8	7/8	140	1	M24
4	100	255	35	146	114.3	157.2	7	200	As Required	8	7/8	140	1	M24
5	125	280	38.1	178	141.3	185.7	7	235	As Required	8	7/8	145	1	M24
6	150	320	41.3	206	168.3	215.9	7	269.9	As Required	12	7/8	150	1	M24
8	200	380	47.7	260	219.1	269.9	7	330	As Required	12	1	170	1 1/8	M27
10	250	445	54	321	273	323.8	7	387.4	As Required	16	1 1/8	190	1 1/4	M30
12	300	520	57.2	375	323.8	381	7	450.8	As Required	16	1 1/4	205	1 3/8	M33
14	350	585	60.4	425	355.6	412.8	7	514.4	As Required	20	1 1/4	210	1 3/8	M33
16	400	650	63.5	483	406.4	469.9	7	571.5	As Required	20	1 3/8	220	1 1/2	M36
18	450	710	66.7	533	457	533.4	7	628.6	As Required	24	1 3/8	230	1 1/2	M36
20	500	775	69.9	587	508	584.2	7	685.8	As Required	24	1 1/2	240	1 3/4	M39
24	600	915	76.2	702	610	692.2	7	812.8	As Required	24	1 3/4	265	1 7/8	M45

Class 600 Long Weld Neck Flange Dimensions

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	95	14.3	38	21.3	34.9	7	66.7	As Required	4	1/2	75	5/8	M14
3/4	20	115	15.9	48	26.7	42.9	7	82.6	As Required	4	5/8	90	3/4	M16
1	25	125	17.5	54	33.4	50.8	7	88.9	As Required	4	5/8	90	3/4	M16
1 1/4	32	135	20.7	64	42.2	63.5	7	98.4	As Required	4	5/8	95	3/4	M16
1 1/2	40	155	22.3	70	48.3	73	7	114.3	As Required	4	3/4	110	7/8	M20
2	50	165	25.4	84	60.3	92.1	7	127	As Required	8	5/8	110	3/4	M16
2 1/2	65	190	28.6	100	73	104.8	7	149.2	As Required	8	3/4	120	7/8	M20
3	80	210	31.8	117	88.9	127	7	168.3	As Required	8	3/4	125	7/8	M20
3 1/2	90	230	35	133	101.6	N/A	7	184.2	As Required	8	7/8	140	1	M24
4	100	275	38.1	152	114.3	157.2	7	215.9	As Required	8	7/8	145	1	M24
5	125	330	44.5	189	141.3	185.7	7	266.7	As Required	8	1	165	1 1/8	M27
6	150	355	47.7	222	168.3	215.9	7	292.1	As Required	12	1	170	1 1/8	M27
8	200	420	55.6	273	219.1	269.9	7	349.2	As Required	12	1 1/8	190	1 1/4	M30
10	250	510	63.5	343	273	323.8	7	431.8	As Required	16	1 1/4	215	1 3/8	M33
12	300	560	66.7	400	323.8	381	7	489	As Required	20	1 1/4	220	1 3/8	M33
14	350	605	69.9	432	355.6	412.8	7	527	As Required	20	1 3/8	235	1 1/2	M36
16	400	685	76.2	495	406.4	469.9	7	603.2	As Required	20	1 1/2	255	1 5/8	M39
18	450	745	82.6	546	457	533.4	7	654	As Required	20	1 5/8	275	1 3/4	M42
20	500	815	88.9	610	508	584.2	7	723.9	As Required	24	1 5/8	285	1 3/4	M42

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Largest Manufacturer and Supplier of Long Weld Neck Flanges in Dubai, UAE

Jinay Metals, one of the leading suppliers of Long Weld Neck Flanges in Dubai, UAE, offers a wide selection of high-quality flanges suitable for various industrial applications. With an extensive inventory, reliable sourcing, and a strong commitment to quality, service, and timely delivery, Jinay Metals has established itself as a trusted name for premium stainless steel products across the UAE.

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Types of Long Weld Neck Flanges

Are Custom Sizes Available for Long Weld Neck Flanges?

Yes, we provide Long Weld Neck Flanges to match your exact project requirements. At Jinay Metals, our team is dedicated to delivering tailored flanges solutions that ensure precision and reliability. For more information or personalized assistance, reach out to us at sales@jinaymetals.ae.

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Long Weld Neck Flanges are popular in industries that require high-pressure, high-temperature, and critical service components. Their long neck configuration allows for proper load distributions and secure joint connection, making them acceptable for pipeline, refinery, power plant, and offshore applications. These flanges are commonly found in the oil and gas processing industry, petrochemical plants, chemical industries, and marine engineering systems, while also suitable for both cryogenic and high-temperature operations, where containment structural strength and leak-free connections are critical. Long Weld Neck Flanges produce safe, reliable, and efficient service in both process piping and pressure vessel applications.