Stainless Steel Long Weld Neck Flanges Weight Chart: Sizes, Design, and Engineering Accuracy

Stainless Steel Long Weld Neck Flanges Weight Chart is a very important reference material applied in industrial piping systems, to provide structural accuracy, load control, and safety of installation. Long weld neck flanges are designed to meet high-pressure and high-temperature service, which requires weight calculation to be critical in terms of system reliability and performance.

What Are Stainless Steel Long Weld Neck Flanges?

The stainless steel long weld neck flanges have a long tapered hub, which progressively changes to the thickness of the pipe wall. This special structure minimizes stress concentration in the joint and entails fatigue resistance. These flanges find high application in oil refineries, petrochemical plants, power stations, and offshore pipelines, which are critical.

Their long neck gives them a superior reinforcement that they are applicable in systems that experience cyclic loading and harsh operating environments.

Significance of Long Weld Neck Flanges Stainless Steel Long Weld Neck Flange Weight Chart.

An S.S. Long Weld Neck Flanges Weight Chart is a standardized weight information in terms of flange size, pressure class, and dimensional requirements. Engineering, safety of handling, and effective project implementation require the accuracy of weight-related information.

Weight charts enable engineers to identify the support required by pipes, the structural loads, and also align the installation correctly. Inaccurate weight information can result in imbalance in the piping systems, overstress or performance problems over time.

The Effectors on Long Weld Neck Flange Weight.

Several technical considerations affect the total weight of stainless steel long weld neck flanges:

• Material Grade: Some of the grades are 304,316,321 and 347 which influence density and strength.
• Pressure Class: The pressure rating that requires high demands gfor reater thickness of dimensions.
• Nominal Pipe Size: Bigger sizes make more metal and a larger flange diameter.
• Standards of Manufacturing ASME B16.5 and ASME B16.47 specify dimensional tolerances.
• All these parameters should be taken into account when a Stainless Steel Long Weld Neck Flange Weight Chart is referred to.

Stainless Steel Long Weld Neck Flanges Weight in KG

NOMINAL SIZE		DIMENSIONS		WEIGHT (KG)
NPS(Inches)	DN (mm)	FLANGEMM	FLANGETHICKNESS	SOWSW	WN	BLIND
1/2	15	88.9	11.2	0.4	0.5	0.4
3/4	20	98.6	12.7	0.6	0.7	0.6
1	25	108	14.2	0.8	1	0.9
1 1/4	32	117.3	15.7	1	1.3	1.2
1 1/2	40	127	17.5	1.3	1.7	1.5
2	50	152.4	19.1	2.1	2.6	2.4
2 1/2	65	177.8	22.4	3.3	4.1	3.9
3	80	190.5	23.9	3.9	4.9	4.9
3 1/2	90	215.9	23.9	4.8	6.1	6.2
4	100	228.6	23.9	5.3	6.8	7.0
5	125	254	23.9	6.1	8.6	8.6
6	150	279.4	25.4	7.5	10.6	11.3
8	200	342.9	28.4	12.1	17.6	19.6
10	250	406.4	30.2	16.5	24	28.6
12	300	482.6	31.8	26.2	36.5	43.2
14	350	533.4	35.1	34.6	48.4	58.1
16	400	596.9	36.6	44.8	60.6	76.1
18	450	635	39.6	48.9	68.3	93.7
20	500	698.5	42.9	61.9	84.5	122.0
24	600	812.8	47.8	86.9	115	185.0

Industrial Significance of Weight Charts.

Weight charts are broadly employed in the industries in the planning, execution, and quality assurance.

Accuracy of Engineering and Design.

Weight charts are used to enable engineers to determine the spread of stress and the span and spacing of the pipes.

Installation and Safety

The accurate knowledge of the flange weight will help to use the right lifting equipment and will reduce the risks at the site.

Cost and Logistics Planning.

The correct weight information assists in the determination of the transportation expenses and avoids unforeseen handling problems.

Long Weld Neck Flange Dimension Chart

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

Benefits of Stainless Steel Long Weld Neck Flanges.

Long weld neck flanges made of stainless steel present several benefits of performance:

• Outstanding mechanical hardiness and stability.

• Easy movement of stress at the welded joints.

• Very low corrosion and temperature.

• Prolonged operation under harsh conditions.

• Less chance of leaking and joint failure.

Such advantages make them best suited to important pipeline applications.

Routine Uses of Long Weld Neck Flanges.

Long weld neck flanges of stainless steel are used in:

• Oil and gas refining plants.

• Distribution of chemical and petrochemical plants.

• Power generation systems

• The offshore and marine pipelines.

• Fluid lines and high-pressure steam.

Conclusion

A properly designed Stainless Steel Long Weld Neck Flanges Weight Chart is an essential part of the design and implementation of effective piping systems. Precise weight information facilitates safe installation, acceptable calculation of load, and efficient operations in the long-term. With standardized weight charts and high-quality stainless steel flanges, industries can have high safety, minimized maintenance and reliable performance in the high pressure and high-temperature use.