ANSI ASME B16.5 CLASS 400 WELD NECK FLANGES

Class 400 Weld Neck Flanges | #400 Sch 40 Weld Neck Flange | B16.5 #400 WNRF Flange | WNFF Class 400 | ANSI 400 Weldneck Flange | ASME 400 Weldneck Flange | #400 Weldneck Dimensions | 400 weldneck flange schedule chart

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ANSI ASME B16.5 Weld Neck Flange Manufacturer Supplier Distributors

Class 400 Weld Neck Flanges are generally used in high pressure applications, where hot or cold temperatures exist. These steel ASME B16.5 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 ANSI B16.5 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 ANSI weld neck pipe flange. Such weld neck are favoured in critical applications. The inside diameter of a #400 weld neck flange is machined to match the inside diameter of the pipe. Tesco Steel & Engineering manufacture a wide range of high quality ASME 400 Weld Neck Flanges in India. We offer these flanges in ASME/ANSI/DIN standards.

Class 400 Weld Neck Flange Dimensions as per ASME B16.5

Size in Inch	Size in mm	Outer Diameter	Flange Thickness	Hub OD	Weld Neck OD	Welding Neck Length	Bore	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I	J
1/2	15	95	14.3	38	21.3	52	According to Schedule	34.9	7	66.7	1.6
3/4	20	115	15.9	48	26.7	57		42.9	7	82.6	1.6
1	25	125	17.5	54	33.4	62		50.8	7	88.9	1.6
1 1/4	32	135	20.7	64	42.2	67		63.5	7	98.4	1.6
1 1/2	40	155	22.3	70	48.3	70		73	7	114.3	1.6
2	50	165	25.4	84	60.3	73		92.1	7	127	1.6
2 1/2	65	190	28.6	100	73	79		104.8	7	149.2	1.6
3	80	210	31.8	117	88.9	83		127	7	168.3	1.6
3 1/2	90	230	35	133	101.6	86		139.7	7	184.2	1.6
4	100	255	35	146	114.3	89		157.2	7	200	1.6
5	125	280	38.1	178	141.3	102		185.7	7	235	1.6
6	150	320	41.3	206	168.3	103		215.9	7	269.9	1.6
8	200	380	47.7	260	219.1	117		269.9	7	330	1.6
10	250	445	54	321	273	124		323.8	7	387.4	1.6
12	300	520	57.2	375	323.8	137		381	7	450.8	1.6
14	350	585	60.4	425	355.6	149		412.8	7	514.4	1.6
16	400	650	63.5	483	406.4	152		469.9	7	571.5	1.6
18	450	710	66.7	533	457	165		533.4	7	628.6	1.6
20	500	775	69.9	587	508	168		584.2	7	685.8	1.6
24	600	915	76.2	702	610	175		692.2	7	812.8	1.6

Class 400 Weld Neck Flange Stud & Bolt Dimesions

Size in Inch	Size in mm	No of Bolts	Bolt Size UNC	RF Stud Length	Hole Size	ISO Stud Size
1/2	15	4	1/2	75	5/8	M14
3/4	20	4	5/8	90	3/4	M16
1	25	4	5/8	90	3/4	M16
1 1/4	32	4	5/8	95	3/4	M16
1 1/2	40	4	3/4	110	7/8	M20
2	50	8	5/8	110	3/4	M16
2 1/2	65	8	3/4	120	7/8	M20
3	80	8	3/4	125	7/8	M20
3 1/2	90	8	7/8	140	1	M24
4	100	8	7/8	140	1	M24
5	125	8	7/8	145	1	M24
6	150	12	7/8	150	1	M24
8	200	12	1	170	1 1/8	M27
10	250	16	1 1/8	190	1 1/4	M30
12	300	16	1 1/4	205	1 3/8	M33
14	350	20	1 1/4	210	1 3/8	M33
16	400	20	1 3/8	220	1 1/2	M36
18	450	24	1 3/8	230	1 1/2	M36
20	500	24	1 1/2	240	1 3/4	M39
24	600	24	1 3/4	265	1 7/8	M45

Advantages of using ANSI ASME B16.5 Class 400 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 ANSI ASME B16.5 Class 400 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 ANSI ASME B16.5 Class 400 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.

WELD NECK FLANGE ANSI / ASME B16.5

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Class #300 Weld Neck Flange

Class #400 Weld Neck Flange

Class #600 Weld Neck Flange

Class #900 Weld Neck Flange

Class #1500 Weld Neck Flange

Class #2500 Weld Neck Flange

Countries we export to: Manufacturers / Suppliers / Stockist of ANSI ASME B16.5 Class 400 Weld Neck Flanges in Kuwait, in UAE, Germany, Saudi Arabia, West Africa, Dubai, Iraq, Congo, Mexico, Bahrain, Canada, Philippines, Thailand, Kenya, Oman, Malaysia, Turkey, Qatar, Sudan, Netherlands, Oman, Nigeria, Muscat, Russia, Vietnam, Angola, Indonesia, UK, Nigeria, Yemen, Italy, United States, Venezuela, Kazakhstan, Algeria, Jordan, Colombia, Libya, Chine, Peru, Iran, South Africa, Bangkok, Jiddah, Afghanistan, Israel, Zambia, Tanzania, Somalia, Pakistan

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