Stainless Steel Threaded Flanges Weight Chart in KG – Complete Size & Weight Guide

Stainless steel threaded flanges are widely used in piping systems where welding is not preferred and easy installation is required. These flanges are internally threaded and screwed onto pipes, making them suitable for low-pressure and non-critical applications. Industries such as oil & gas, petrochemical, water treatment, power plants, and construction rely on accurate weight data for planning, costing, and transportation. That’s why a detailed Stainless Steel Threaded Flanges Weight Chart in KG becomes essential for engineers, procurement teams, and project managers.

A reliable Stainless Steel Threaded Flanges Weight Chart helps determine the exact weight based on size, class, and pressure rating. It ensures proper load calculation, structural support planning, and freight estimation. Whether you are looking for a Stainless Steel Threaded Flanges Weight Chart in MM for dimensional reference or a Stainless Steel Threaded Flanges Weight Chart in PDF for easy download and sharing, having standardised weight information simplifies project execution. Many buyers also search specifically for an SS Threaded Flanges Weight Chart in KG to compare grades such as SS 304, SS 316, and other stainless steel variants.

What Are Stainless Steel Threaded Flanges?

Threaded flanges, also known as screwed flanges, feature internal threads that match the external threads of the pipe. Unlike weld neck or slip-on flanges, they do not require welding, making them ideal for hazardous environments where welding could pose risks. They are commonly manufactured according to ASME / ANSI standards and are available in pressure classes such as 150, 300, 600, and above.

Stainless steel grades like SS 304 and SS 316 are most commonly used due to their corrosion resistance, strength, and durability. The weight of the flange varies depending on nominal pipe size (NPS), pressure class, thickness, and outer diameter.

Stainless Steel Threaded Flanges Weight Chart in Kg

Threaded Flange Weight Chart in KG, MM, PDF

Normal Size Of Steel Pipe In Inches	Size In Millimeter	NPT FlangesOuter Diameter (O.D.) In(MM)	NPT FlangesWall Thickness Of(D)In M)	(ANSI B16.5 Threaded Flanges)
1/2	15	88.9	11.2	0.4
3/4	20	98.6	12.7	0.6
1	25	108	14.2	0.9
1 1/4	32	117.3	15.7	1.2
1 1/2	40	127	17.5	1.5
2	50	152.4	19.1	2.4
2 1/2	65	177.8	22.4	3.9
3	80	190.5	23.9	4.9
3 1/2	90	215.9	23.9	6.2
4	100	228.6	23.9	7.0
5	125	254	23.9	8.6
6	150	279.4	25.4	11.3
8	200	342.9	28.4	19.6
10	250	406.4	30.2	28.6
12	300	482.6	31.8	43.2
14	350	533.4	35.1	58.1
16	400	596.9	36.6	76.1
18	450	635	39.6	93.7
20	500	698.5	42.9	122.0

DIN 2565 PN6 Threaded Flange Dimensions

Flanges					Neck	RF		Screws			Weight In KG(7,85 Kg/dm3)
(Diameter)	(d1)	(Thread)	(D)	(b)	(k)	(h1)	(d3)	(d4)	(f)	(Number)	(Thread )	(d2)	(Kilogram)
15	21,3	R 1/2	80	12	55	20	30	40	2	4	M 10	11	0,373
20	26,9	R 3/4	90	14	65	24	40	50	2	4	M 10	11	0,59
25	33,7	R 1	100	14	75	24	50	60	2	4	M 10	11	0,743
32	42,4	R 1 1/4	120	14	90	26	60	70	2	4	M 12	14	1,05
40	48,3	R 1 1/2	130	14	100	26	70	80	3	4	M 12	14	1,2
50	60,3	R 2	140	14	110	28	80	90	3	4	M 12	14	1,37
65	76,1	R 2 1/2	160	14	130	32	100	110	3	4	M 12	14	1,92
80	88,9	R 3	190	16	150	34	110	128	3	4	M 16	18	2,82
100	114,3	R 4	210	16	170	38	130	148	3	4	M 16	18	3,19
125	139,7	R 5	240	18	200	40	160	178	3	8	M 16	18	4,47
150	165,1	R 6	265	18	225	44	185	202	3	8	M 16	18	5,3

Stainless Steel Threaded Flanges Weight Chart in MM

DIN 2565 PN16 Threaded Flange Dimensions

Diameter	d1	Flange					Neck	RF		Screws			Weight In KG(7,85 Kg/dm3)
Diameter	d1	(Thread)	(D)	(b)	(k)	(h1)	(d3)	(d4)	(f)	(Number)	(Thread )	(d2)	(Kilogram)
15	21,3	R 1/2	95	14	65	20	35	45	2	4	M 12	14	0,613
20	26,9	R 3/4	105	16	75	24	45	58	2	4	M 12	14	0,91
25	33,7	R 1	115	16	85	24	52	68	2	4	M 12	14	1,1
32	42,4	R 1 1/4	140	16	100	26	60	78	2	4	M 16	18	1,6
40	48,3	R 1 1/2	150	16	110	26	70	88	3	4	M 16	18	1,78
50	60,3	R 2	165	18	125	28	85	102	3	4	M 16	18	2,43
65	76,1	R 2 1/2	185	18	145	32	105	122	3	4	M 16	18	3,18
80	88,9	R 3	200	20	160	34	118	138	3	8	M 16	18	4,12
100	114,3	R 4	220	20	180	38	140	158	3	8	M 16	18	4,47
125	139,7	R 5	250	22	210	40	168	188	3	8	M 16	18	6,13
150	165,1	R 6	285	22	240	44	195	212	3	8	M 20	22	7,92

ANSI 150 Threaded Flange Dimensions

Size Of Bore	(D) *Diameter*	*WT Of(E)***	(F) *Diameter*	(B) *Diameter*	Height	Nbr	Bolts Holes	*(C)Diameter***
1/2	90	9.6	35.05	30	14	4	15.87	60.3
3/4	100	11.2	42.92	38	14	4	15.87	69.9
1	110	12.7	50.80	49	16	4	15.87	79.4
1 1/4	115	14.3	63.50	59	19	4	15.87	88.9
1 1/2	125	15.9	73.15	65	21	4	15.87	98.4
2	150	17.5	91.94	78	24	4	19.05	120.7
2 1/2	180	20.7	104.65	90	27	4	19.05	139.7
3	190	22.3	127.00	108	29	4	19.05	152.4
3 1/2	215	22.3	139.70	122	30	8	19.05	177.8
4	230	22.3	157.22	135	32	8	19.05	190.5
5	255	22.3	185.67	164	35	8	22.22	215.9
6	280	23.9	215.90	192	38	8	22.22	241.3
8	345	27.0	269.75	246	43	8	22.22	298.5
10	405	28.6	323.85	305	48	12	25.40	362.0
12	485	30.2	381.00	365	54	12	25.40	431.8
14	535	33.4	412.75	400	56	12	28.57	476.3
16	595	35.0	469.90	457	62	16	28.57	539.8
18	635	38.1	533.40	505	67	16	31.75	577.9
20	700	41.3	584.20	559	71	20	31.75	635.0
24	815	46.1	692.15	663	81	20	34.92	749.3

Class 300 Threaded Flange Dimensions

Size Of Bore	(D) *Diameter*	*WT Of(E)***	(F) *Diameter*	(B) *Diameter*	(A) *Diameter*	Height	Nbr	Bolts Holes	*(C)Diameter***
1/2	95	12.7	35.05	38	23.6	21	4	15.87	66.7
3/4	115	14.3	42.92	48	29.0	24	4	19.05	82.6
1	125	15.9	50.80	54	35.8	25	4	19.05	88.9
1 1/4	135	17.5	63.50	64	44.4	25	4	19.05	98.4
1 1/2	155	19.1	73.15	70	50.3	29	8	22.22	114.3
2	165	20.7	91.94	84	63.5	32	8	19.05	127.0
2 1/2	190	23.9	104.65	100	76.2	37	8	22.22	149.2
3	210	27.0	127.00	117	92.2	41	8	22.22	168.3
3 1/2	230	28.6	139.70	133	104.9	43	8	22.22	184.2
4	255	30.2	157.22	146	117.6	46	8	22.22	200.0
5	280	33.4	185.67	178	144.4	49	8	22.22	235.0
6	320	35.0	215.90	206	171.4	51	12	22.22	269.9
8	380	39.7	269.75	260	222.2	60	12	25.40	330.2
10	445	46.1	323.85	321	276.2	65	16	28.57	387.4
12	520	49.3	381.00	375	328.6	71	16	31.75	450.8
14	585	52.4	412.75	425	360.4	75	20	31.75	514.4
16	650	55.6	469.90	483	411.2	81	20	34.92	571.5
18	710	58.8	533.40	533	462.0	87	24	34.92	628.6
20	775	62.0	584.20	587	512.8	94	24	34.92	685.8
24	915	68.3	692.15	702	614.4	105	24	41.27	812.8

Class 600 Threaded Flange Dimensions

Size Of Bore	(D) *Diameter*	*WT Of(E)***	(F) *Diameter*	(B) *Diameter*	(A) *Diameter*	Height	Nbr	Bolts Holes	*(C)Diameter***
1/2	95	14.3	35.05	38	23.6	22	4	15.87	66.7
3/4″	115	15.9	42.92	48	29.0	25	4	19.05	82.6
1″	125	17.5	50.80	54	35.8	27	4	19.05	88.9
1 1/4″	135	20.7	63.50	64	44.4	29	4	19.05	98.4
1 1/2″	155	22.3	73.15	70	50.6	32	4	22.22	114.3
2″	165	25.4	91.94	84	63.5	37	8	19.05	127.0
2 1/2″	190	28.6	104.65	100	76.2	41	8	22.22	149.2
3″	210	31.8	127.00	117	92.2	46	8	22.22	168.3
3 1/2″	230	35.0	139.70	133	104.9	49	8	25.40	184.2
4″	275	38.1	157.22	152	117.6	54	8	25.40	215.9
5″	330	44.5	185.67	189	144.4	60	8	28.57	266.7
6″	355	47.7	215.90	222	171.4	67	12	31.75	292.1
8″	420	55.6	269.75	273	222.2	76	12	31.75	349.2
10″	510	63.5	323.85	343	276.2	86	16	34.92	431.8
12″	560	66.7	381.00	400	328.6	92	20	34.92	489.0
14″	605	69.9	412.75	432	360.4	94	20	38.10	527.0
16″	685	76.2	469.90	495	411.2	106	20	41.27	603.2
18″	745	82.6	533.40	546	462.0	117	20	44.45	654.0
20″	815	88.9	584.20	610	512.8	127	24	44.45	723.9
24″	940	101.6	692.15	718	614.4	140	24	47.62	838.2

Standard Size Range for SS Threaded Flanges

Typically, stainless steel threaded flanges are available in:

Size Range: ½” NB to 24” NB
Pressure Class: 150, 300, 600, 900, 1500, 2500
Standards: ASME B16.5, ANSI, DIN, EN

The weight increases with higher pressure class and larger nominal bore size. For example, a Class 300 flange will weigh significantly more than a Class 150 flange of the same size due to increased thickness.

Factors Affecting Stainless Steel Threaded Flange Weight

Several technical parameters influence the total weight:

Nominal Pipe Size (NPS)
Pressure Class Rating
Material Grade (SS 304, SS 316, etc.)
Flange Thickness
Facing Type (RF, FF)

Heavier flanges are typically used in high-pressure applications, while lighter ones are suitable for low-pressure systems.

Conclusion

A comprehensive Stainless Steel Threaded Flanges Weight Chart in KG – Complete Size & Weight Guide plays a crucial role in industrial piping projects. It simplifies procurement, ensures dimensional accuracy, and supports efficient logistics planning. Whether you need a Stainless Steel Threaded Flanges Weight Chart, a version in millimetres, or a downloadable Stainless Steel Threaded Flanges Weight Chart in PDF, accurate weight data helps maintain quality, compliance, and project efficiency.

For engineers, contractors, and B2B buyers, referring to an updated SS Threaded Flanges Weight Chart in KG ensures precise material selection and long-term performance in demanding industrial environments.