Stainless Steel 304L Flanges Manufacturer in India

Stainless Steel 304L Flanges Manufacturer and Supplier in India

Stainless Steel 304L Flanges are low carbon grade stainless steel pipe fittings, which are used to join pipe, valves, pump and other industrial pipe equipment. They are made from ASTM A182 F304L material, which has a 18-20% chromium and 8-12% nickel, giving it excellent corrosion resistance and a long a service life. A low amount of carbon is found in 304L which improves its weldability and avoids corrosion in the weld zone. It comes in various forms including Weld Neck, Slip On, Blind, Socket Weld, and Threaded Flanges and has a number of uses. The Stainless Steel 304L has a minimum tensile strength of 485 Mpa, and a yield strength of 205 Mpa, which makes it strong and durable in difficult conditions. These 304L flanges are easier to weld and resistant to intergranular corrosion as compared to ordinary 304 flanges. Solitaire Overseas offers top-quality flange products in accordance with international standards.

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Specifications of Stainless Steel 304L Flanges

Technical Parameter	Standard & Specification Details
Material Specifications	ASTM A182 / ASME SA182
Flange Size Range	1/2" (15 NB) to 48" (1200 NB)
Design & Dimensional Standards	ANSI/ASME B16.5, ASME B16.47 Series A & B, ASME B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Regional / Body Standards	ANSI, ASME, BS, DIN, EN, etc.
Class / Pressure Ratings	ASME/ANSI: 150#, 300#, 600#, 900#, 1500#, 2500# EN/DIN (PN Rating): PN6, PN10, PN16, PN25, PN40, PN64, etc.

Chemical Composition of Stainless Steel 304L Flanges

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
SS 304L	0.035 max	2.0 max	1.0 max	0.045 max	0.03 max	18.0 - 20.0	—	8.0 - 13.0	—

Mechanical Properties of SS 304L Flanges

Property	Technical Value / Limit
Density	8.0 g/cm³
Melting Point	1400 °C (2550 °F)
Tensile Strength	70,000 Psi (485 MPa)
Yield Strength (0.2% Offset)	30,000 Psi (205 MPa)
Elongation	35 %

Stainless Steel 304L Equivalent Grades Table

Standard	Werkstoff Nr.	UNS	JIS (Japan)	BS (UK)	GOST (Russia)	AFNOR (France)	EN (Europe)
SS 304L	1.4307	S30403	SUS 304L	304S11	03&Х;18Н11	Z3CN18–10	X2CrNi18-9 / X2CrNi19-11

Dimension Chart of Stainless Steel 304L Flanges

Standard	Class / Table	Flange Diameter (mm)	Bolt Circle Diameter (mm)	Number of Bolts	Bolt Size	Diameter of Bolt Hole (mm)
AS4087	PN14	95	67	4	M12	14
AS 2129	Table C	95	67	4	1/2" (13)	14
	Table D	95	67	4	1/2" (13)	14
	Table E	95	67	4	1/2" (13)	14
	Table F	95	67	4	1/2" (13)	14
	Table H	114	83	4	5/8" (16)	17
	Table J	114	83	4	5/8" (16)	17
ANSI B16.5	ANSI 150	89	60.5	4	1/2" (13)	16
	ANSI 300	95	66.7	4	1/2" (13)	16
	ANSI 600	95	66.7	4	1/2" (13)	16
	ANSI 900	121	82.5	4	3/4" (19)	22
	ANSI 1500	121	82.5	4	3/4" (19)	22
ISO 7005 (DIN)	PN6	80	55	4	M10	11
	PN10	95	65	4	M12	14
	PN16	95	65	4	M12	14
	PN20	90	60.5	4	M14	16
	PN25	95	65	4	M12	14
	PN40	95	65	4	M12	14

Size Chart of SS 304L Flanges

minal Pipe Size	Outside Diameter of Flange (O)	Thickness of Flange (Q)	Diameter of Raised Face (R)	Diameter of Hub at Base (X)	Length Thru Hub (Y)			Diameter of Hub at Bevel (W)	Diameter or Bore		Radius of Fillet (r)	Depth of Socket (Z)
minal Pipe Size	Outside Diameter of Flange (O)	Thickness of Flange (Q)	Diameter of Raised Face (R)	Diameter of Hub at Base (X)	Welding Neck	Slip-On Threaded Socket	Lap Joint	Diameter of Hub at Bevel (W)	Slip-on (B)	Lap Joint (H)	Radius of Fillet (r)	Depth of Socket (Z)
1/2	3-1/2	7/16	1-3/8	1-3/16	1-7/8	5/8	5/8	.88	.90	.84	1/8	3/8
3/4	3-7/8	1/2	1-11/16	1-1/2	2-1/16	5/8	5/8	1.09	1.11	1.05	1/8	7/16
1	4-1/4	9/16	2	1-15/16	2-3/16	11/16	11/16	1.36	1.38	1.32	1/8	1/2
1-1/4	4-5/8	5/8	2-1/2	2-5/16	2-1/4	13/16	13/16	1.70	1.72	1.66	3/16	9/16
1-1/2	5	11/16	2-7/8	2-9/16	2-7/16	7/8	7/8	1.95	1.97	1.90	1/4	5/8
2	6	3/4	3-5/8	3-1/16	2-1/2	1	1	2.44	2.46	2.38	5/16	11/16
2-1/2	7	7/8	4-1/8	3-9/16	2-3/4	1-1/8	1-1/8	2.94	2.97	2.88	5/16	3/4
3	7-1/2	15/16	5	4-1/4	2-3/4	1-3/16	1-3/16	3.57	3.60	3.50	3/8	13/16
3-1/2	8-1/2	15/16	5-1/2	4-13/16	2-13/16	1-1/4	1-1/4	4.07	4.10	4.00	3/8	7/8
4	9	15/16	6-3/16	5-5/16	3	1-5/16	1-5/16	4.57	4.60	4.50	7/16	15/16
5	10	15/16	7.5/16	6-7/16	3-1/2	1-7/16	1-7/16	5.66	5.69	5.56	7/16	15/16
6	11	1	8-1/2	7-9/16	3-1/2	1-9/16	1-9/16	6.72	6.75	6.63	1/2	1-1/16
8	13-1/2	1-1/8	10-5/8	9-11/16	4	1-3/4	1-3/4	8.72	8.75	8.63	1/2	1-1/4
10	16	1-3/16	12-3/4	12	4	1-15/16	1-15/16	10.88	10.92	10.75	1/2	1-5/16
12	19	1-1/4	15	14-3/8	4-1/2	2-3/16	2-3/16	12.88	12.92	12.75	1/2	1-9/16
14	21	1-3/8	16-1/4	15-3/4	5	2-1/4	3-1/8	14.14	14.18	14.00	1/2	1-5/8
16	23-1/2	1-7/16	18-1/2	18	5	2-1/2	3-7/16	16.16	16.19	16.00	1/2	1-3/4
18	25	1-9/16	21	19-7/8	5-1/2	2-11/16	3-13/16	18.18	18.20	18.00	1/2	1-15/16
20	27-1/2	1-11/16	23	22	5-11/16	2-7/8	4-1/16	20.20	20.25	20.00	1/2	2-1/8
24	32	1-7/8	27-1/4	26-1/8	6	3-1/4	4-3/8	24.25	24.25	24.00	1/2	2-1/2

Weight Chart of Stainless Steel 304L Flanges

Pipe Size (inch)	Nom. Diam. (dn)	O.D. Flange (O)	Thk. Min (C)	Hub Diam. (X)	Raised Face (G)	Length Hub (Y)	Thread Length (T)	Bolt Circle (BC)	Bolt Hole (BH)	No. Bolts (BN)	Bolt Diam. (BD)	Weight (KG)	Weight (LB)
1/2"	15	89.00	11.20	30.20	35.10	15.70	15.70	60.50	15.80	4	1/2"	0.4	0.9
3/4"	20	98.50	12.70	38.10	42.90	15.70	15.70	69.90	15.80	4	1/2"	0.7	1.5
1"	25	108.00	14.20	49.30	50.80	17.50	17.50	79.30	15.80	4	1/2"	0.8	1.8
1-1/4"	32	117.50	15.70	58.70	63.50	20.60	20.60	88.90	15.80	4	1/2"	1.2	2.6
1-1/2"	40	127.00	17.50	65.00	73.20	22.40	22.40	98.60	15.80	4	1/2"	1.5	3.3
2"	50	152.50	19.10	77.70	91.90	25.40	25.40	120.70	19.10	4	5/8"	2.3	5.1
2-1/2"	65	178.00	22.40	90.40	104.60	28.40	28.40	139.70	19.10	4	5/8"	3.7	8.1
3"	80	190.50	23.90	108.00	127.00	30.20	30.20	152.40	19.10	4	5/8"	4.1	9.0
3-1/2"	90	216.00	23.90	122.20	139.70	31.80	31.80	177.80	19.10	8	5/8"	5.1	11.2
4"	100	228.50	23.90	134.90	157.20	33.30	33.30	190.50	19.10	8	5/8"	5.9	13.0
5"	125	254.00	23.90	163.60	185.70	36.60	36.60	215.90	22.40	8	3/4"	7.0	15.4
6"	150	279.50	25.40	192.00	215.90	39.60	39.60	241.30	22.40	8	3/4"	8.4	18.5
8"	200	343.00	28.40	246.10	269.70	44.50	44.50	298.50	22.40	8	3/4"	13.0	28.6
10"	250	406.50	30.20	304.80	323.90	49.30	49.30	362.00	25.40	12	7/8"	18.0	39.5
12"	300	482.50	31.80	365.30	381.00	55.60	55.60	431.80	25.40	12	7/8"	29.0	64.0
14"	350	533.50	35.10	400.10	412.80	57.20	57.20	476.30	28.50	12	1"	39.0	86.0
16"	400	597.00	36.60	457.20	469.90	63.50	63.50	539.80	28.50	16	1"	47.0	103.0
18"	450	635.00	39.60	505.00	533.40	68.30	68.30	577.90	31.80	16	1 1/8"	57.0	126.0
20"	500	698.50	42.90	558.80	584.20	73.20	73.20	635.00	31.80	20	1 1/8"	76.0	167.0
24"	600	813.00	47.80	663.40	692.20	82.60	82.60	749.30	35.10	20	1 1/4"	97.0	214.0

Applications and Industrial Uses of Stainless Steel 304L Flanges

Heat Treatment Furnaces
Petrochemical Processing Plants
Chemical Processing Facilities
Power Generation Plants
Oil & Gas Processing Systems
Industrial Boilers and Heat Exchangers
Cement Kilns and Rotary Furnaces
Steel and Metallurgical Processing Plants

Frequently Asked Questions

What are Stainless Steel 304L Flanges?

Stainless Steel 304L Flanges are low-carbon stainless steel flanges used to connect pipes, valves, and equipment in piping systems while offering good corrosion resistance.

What is the difference between 304 and 304L stainless steel flanges?

The main difference is carbon content. SS 304L has a lower carbon content than SS 304, which improves weldability and reduces the risk of intergranular corrosion.

Why is 304L preferred for welding applications?

304L is preferred for welding because its low carbon content minimizes carbide precipitation and helps maintain corrosion resistance after welding.

Are Stainless Steel 304L Flanges corrosion resistant?

Yes, Stainless Steel 304L Flanges provide excellent resistance to corrosion in many industrial and atmospheric environments.

What industries commonly use Stainless Steel 304L Flanges?

SS 304L Flanges are widely used in chemical processing, food processing, pharmaceuticals, water treatment, and oil and gas industries.

Can SS 304L Flanges be used in chemical processing plants?

Yes, SS 304L Flanges are commonly used in chemical processing plants due to their good corrosion resistance and ease of fabrication.

Stainless Steel 304L Flanges