Stainless Steel 304L Flanges

AISI 304L Blind Flange and ASTM A182 F304L WNRF/ SORF Flange manufacturer in India

What is Stainless Steel 304L Flanges?
The Stainless Steel 304L material consists of several elements in its alloy like carbon, silicon, chromium, nickel. Sulfur, phosphorus, etc., which gives the material its unique properties. It has the same 18% chromium and 8% nickel like that of the SS 304 material, but it comes with a lower carbon content. The grades of these stainless steel mostly vary according to the change in the total amount of carbon content. There are different types of Stainless Steel 304L Flanges available and each of them have separate usage depending on their structure. The Stainless Steel 304L material belongs to the A182 specification, which is for forged and rolled alloy stainless steel flanges. The equipment made with the material is mostly used for high temperature applications.
Due to the presence of low carbon content in the material, it acquires less carbide precipitate during the welding process. Also, there would be less chances of intergranular and localized corrosion. These flanges are available with different pressure ratings, ranging between 150 to 2500, and the pressure number from PN6 through PN64. The Stainless Steel 304L Flanges come with high temperature tolerance, which makes them capable of operating at up to 870 degrees C. The flanges are available in different shapes, sizes, and can be custom-made according to the requirements specified by the clients. They also possess different specifications, standards, and dimensions. These SS 304L flanges are available in the size range of ½” to 48”, which is for their nominal bore size.
Due to the low carbon content in Stainless Steel 304L material, all conventional welding methods can be used on them. And because of this, forming joint connections with the Stainless Steel 304L Flanges becomes very easy and hence they are used across various industries, especially the petroleum industry. The presence of a healthy dose of chromium helps in improving the corrosion resistance properties of the flanges.

ASTM A182 F304L Slip on Flanges Vs 304L Stainless Steel Blind Flange?
The ASTM A182 F304L Slip on Flange is a common variety of forged flange which is low in carbon content compared to the 304 grade and easy to install. They should be slid inside the pipe before the welding process. Double welds are done on the inner and outer side to ensure a leak-proof connection. Also the 304L grade is less degradable compared to the 304 grade. They are used in low pressure pipelines or in those connections that have a very little risk of leakage.
The 304L Stainless Steel Blind Flange is a popular piping component of SS 304L grade material, which is known for its carbide precipitate eliminating capabilities. They look like a plate with bolts holes around it. They are particularly designed to stop the flow inside the pipe or seal a given nozzle of the valve. The Welding process is easier with 304L Stainless Steel Blind Flange as there is no need for annealing weld joints before using the completed metal form. It helps in saving time and energy. They promote easy access to the pipe in case any maintenance work is required inside the piping line.

UNS S30403 Weld Neck Flange Vs SA 182 F304l Threaded Flange
The UNS S30403 material is used for high-temperature applications and the weld neck type of flange is ideal for severe and critical conditions. The UNS S30403 Weld Neck Flange is thus capable of bearing high temperature, high pressure, wide fluctuation, etc., type of conditions. They are also used for fluids that are volatile and hazardous in nature.They are a circular fitting with protruding rims present around their circumference.
The SA 182 F304l Threaded Flange does not need welding on the joints for establishing connection with the piping system. Infact, they are used in those areas of a pipe where welding might not be possible. For example, highly explosive areas and potential risk zones might make a difficult area for welding and there threaded flanges might be used.

What is installation process of 304l Flange?
The installation of a 304L flange depends on the type of flange one is using. For example, there are flanges that need welded connections and for them various welding methods might be used for joining them with the piping system. Similarly, there are non-welding flanges like the threaded flanges, which are screwed together to make a piping connection. Thus individual SS 304L flanges have their specific installation procedure.

Stainless Steel 304L Flanges

ASME B16.5 SA182 F304L Slip On Flange manufacturers in Mumbai offers widest range of Stainless Steel 304L Weld Neck Flange and EN 1.4307 Reducing Flanges in India

Table of Content

• Stainless Steel 304L Flanges Specification
• SS 304L Flanges Weight Table
• A182 304L Flange Pressure Ratings
• 304L Stainless Steel Flange Dimensions
• Dimension of ASTM A182 Grade F304L Slip on Flanges
• 304L SS Blind Flange Dimensions Chart
• Price list of Stainless Steel 304L Flanges
• 304L Stainless Steel Weld Neck Flange Tolerance Chart In Mm
• A182 F304l Chemical Composition
• ASTM A182 F304l Equivalent

• 304l Flange Mechanical Properties
• Physical Properties of 304L SS RTJ Flange
• Different Types of Stainless Steel 304L Flanges
• ASME SA 182 F304l Flanges Yield Strength
• AISI 304l Flange Melting Point
• Heat Treatment of 304 Stainless Steel Weld Neck Flange
• Applications of DIN 1.4307 Flanges
• Stock List of 304L Stainless Steel Flanges
• Mechanical Difference Between 304 Vs 304L Stainless Steel Flanges
• Welding of SS 304L Flanges

Stainless Steel 304L Flanges Specification

Size Chart	1/2″(15 NB) to 48″ (1200NB)
Pressure Rating Chart ANSI	150 LBS, 300 LBS, 2500 LBS, 900 LBS, 600 LBS, 1500 LBS
Origin	Japan / West Europe / Indian / USA / Korean
JIS	16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
UNI / EN	16Bar 6Bar 40Bar 10Bar 25Bar
Coating	Yellow Transparent, Anti-rust Paint, Oil Black Paint, Zinc Plated, Cold and Hot Dip Galvanized
Manufacturer of Connect Type/ Flange Face Type	RF, FF, RTJ, LJF, Small Tongue, Large Tongue & Groove
DIN Pressure Calculation	25Bar 40Bar 16Bar 6Bar 10Bar / PN64 PN10 PN25 PN16 PN6 PN40
Common Types By Manufacturer	Threaded / Screwed / Forged / Plate
Manufacturer of	GOST, JIS, ANSI, DIN, UNI, SABS, NFE, BS, AS2129, AWWA, EN etc.
Production technique Used By Manufacturer	Forged, Heat treated and machined
Standards Provided By Manufacturer	BS4504, BS 10, ANSI/ASME B16.5, B16.47 Series A & B, API7S-43, API605, B16.48, ISO70051, MSS SP44, EN-1092, DIN, BS1560-3.1, ASME/ANSI B16.5/16.36/16.47A/16.47B, API7S-15, JISB2220, EN1092
Equipment	Bending machine, Press machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc
Test	Direct-reading Spectrograph, Magnetic particle detector, X-ray detector, Ultrasonic flaw detector, Hydrostatic testing machine

Well known Stainless Steel 304L Flanges stockholders, distributor, wholesalers, importer, stockists, supplier, dealers, exporters and Manufacturer in Mumbai

SS 304L Flanges Weight Table

NPS (Nominal Pipe Size)	Loose (Lap Joint)	NPT (Threaded)	SORF (Slip On)	BLRF (Blind)	SWRF (Socket Weld)	WRNR (Weld Neck)
½	1	1	1	2	2	2
1	2	2	2	2	2	3
1¼	3	3	3	3	3	3
¾	2	2	2	2	2	2
1½	3	3	3	4	3	4
2½	8	8	8	7	8	10
2	5	5	5	5	5	6
3	9	9	9	9	9	11.5
4	13	13	13	17	13	16.5
3½	11	12	11	13	11	12
5	15	15	15	20	15	21
8	30	30	30	47	30	42
6	19	19	19	27	19	26
10	43	43	43	70	43	54
24	275	220	220	430	220	268
14	105	90	90	140	90	114
12	64	64	64	123	64	88
16	140	98	106	180	98	140
20	195	165	165	285	165	197
18	160	130	130	220	130	165
22	245	185	185	355	185	225

Manufacturing ASME B16.47 Series B Class 150 SS DIN 1.4307 Socket Weld Flange and 304L Stainless Steel Orifice Flanges for Offshore Oil & Gas Platforms

A182 304L Flange Pressure Ratings

Temperature °F	Class 150	Class 600	Class 1500	Class 400	Class 900	Class 300	Class 2500
-20 to 100	275	1440	3600	960	2160	720	6000
300	205	1080	2700	720	1620	540	4500
200	230	1200	3000	800	1800	600	5000
400	190	995	2485	660	1490	495	4140
600	140	875	2185	580	1310	435	3640
650	125	860	2150	575	1290	430	3580
500	170	930	2330	620	1395	465	3880
700	110	850	2125	565	1275	425	3540
750	95	830	2075	555	1245	415	3460
850	65	790	1980	530	1190	395	3300
800	80	805	2015	540	1210	405	3360
900	50	780	1945	520	1165	390	3240
950	35	765	1910	510	1145	380	3180
1000	20	640	1605	430	965	320	2675
1100	20	515	1285	345	770	255	2145
1150	20	400	995	265	595	200	1655
1050	20	615	1545	410	925	310	2570
1200	20	310	770	205	465	155	1285
1250	20	225	565	150	340	115	945
1300	20	170	430	115	255	85	715
1400	20	95	240	65	145	50	400
1350	20	125	310	80	185	60	515
1450	15	70	170	45	105	35	285
1500	10	55	135	35	80	25	230

304L Stainless Steel Flange Dimensions

Normal Pipe Size (NPS) Of Flanges	(I.D.) Inside Diameter	Thickness Of Raised Face (RF) (T)	Outside Daimeter (O.D.)	Raised Face (R)	RF (Raised Face)	Holes Of Bolts (B)	H	T1	Thickness Of Flat Face (FF) (T2)	BC (Circle Of Bolt)	Bolts Holes Numbers
1/2	0.88	0.88	3.75	1.38	.063	0.62	1.50	0.50	0.82	2.62	4
1	1.36	1.06	4.88	2.00	.063	0.75	2.12	0.63	1.00	3.50	4
3/4	1.09	1.00	4.62	1.69	.063	0.75	1.88	.056	0.94	3.25	4
1-1/4	1.70	1.06	5.25	2.50	.063	0.75	2.50	0.69	1.00	3.88	4
2	2.44	1.31	6.50	3.62	.063	0.75	3.31	0.82	1.25	5.00	8
1-1/2	1.95	1.19	6.12	2.88	.063	0.88	2.75	0.75	1.13	4.50	4
2-1/2	2.94	1.50	7.50	4.12	.063	0.88	3.94	0.94	1.44	5.88	8
3	3.57	1.69	8.25	5.00	.063	0.88	4.62	1.06	1.63	6.62	8
3-1/2	4.07	1.75	9.00	5.50	.063	0.88	5.25	1.13	1.69	7.25	8
4	4.57	1.88	10.00	6.19	.063	0.88	5.75	1.19	1.82	7.88	8
5	5.66	2.00	11.00	7.31	.063	0.88	7.00	1.32	1.94	9.25	8
18	18.18	3.50	28.00	21.00	.063	1.38	21.00	2.32	3.44	24.75	24
6	6.72	2.06	12.50	8.50	.063	0.88	8.12	1.38	2.00	10.62	12
8	8.72	2.44	15.00	10.62	.063	1.00	10.25	1.56	2.38	13.00	12
10	10.88	2.62	17.50	12.75	.063	1.12	12.62	1.82	2.56	15.25	16
12	12.88	2.88	20.50	15.00	.063	1.25	14.75	1.94	2.82	17.75	16
14	14.14	3.00	23.00	16.25	.063	1.25	16.75	2.06	2.94	20.25	20
20	20.20	3.75	30.50	23.00	.063	1.38	23.12	2.44	3.69	27.00	24
16	16.16	3.25	25.50	18.50	.063	1.38	19.00	2.19	3.19	22.50	20
22	22.22	4.00	33.00	25.25	.063	1.63	25.25	2.57	3.94	29.25	24
24	24.25	4.19	36.00	27.25	.063	1.62	27.62	2.69	4.13	32.00	24

Dimension of ASTM A182 Grade F304L Slip on Flanges

Size in Inch	Size in mm	No of Bolts	Outer Dia.	Hub OD	ISO Stud Size	Flange Length	RF Height	Flange Thick.	RF Dia.	PCD	Hole Size	Socket Bore	Weight in kg
			A	C		D	F	B	E	G		H
1/2	15	4	90	30	M14	14	2	9.6	34.9	60.3	5/8	22.2	0.8
1	25	4	110	49	M14	16	2	12.7	50.8	79.4	5/8	34.5	0.9
3/4	20	4	100	38	M14	14	2	11.2	42.9	69.9	5/8	27.7	0.9
1 1/4	32	4	115	59	M14	19	2	14.3	63.5	88.9	5/8	43.2	1.4
2	50	4	150	78	M16	24	2	17.5	92.1	120.7	3/4	61.9	2.3
1 1/2	40	4	125	65	M14	21	2	15.9	73	98.4	5/8	49.5	1.4
2 1/2	65	4	180	90	M16	27	2	20.7	104.8	139.7	3/4	74.6	3.2
3	80	4	190	108	M16	29	2	22.3	127	152.4	3/4	90.7	3.7
4	100	8	230	135	M16	32	2	22.3	157.2	190.5	3/4	116.1	5.9
3 1/2	90	8	215	122	M16	30	2	22.3	139.7	177.8	3/4	103.4	5
5	125	8	255	164	M20	35	2	22.3	185.7	215.9	7/8	143.8	6.8
8	200	8	345	246	M20	43	2	27	269.9	298.5	7/8	221.5	13.7
10	250	12	405	305	M24	48	2	28.6	323.8	362	1	276.2	19.5
6	150	8	280	192	M20	38	2	23.9	215.9	241.3	7/8	170.7	8.6
12	300	12	485	365	M24	54	2	30.2	381	431.8	1	327	29
24	600	20	815	663	M33	81	2	46.1	692.2	749.3	1 3/8	616	100
16	400	16	595	457	M27	62	2	35	469.9	539.8	1 1/8	410.5	54
18	450	16	635	505	M30	67	2	38.1	533.4	577.9	1 1/4	461.8	59
14	350	12	535	400	M27	56	2	33.4	412.8	476.3	1 1/8	359.2	41
20	500	20	700	559	M30	71	2	41.3	584.2	635	1 1/4	513.1	75

API 605 Class 300/ 600/ 900 AISI 304L Lap Joint Flange and BS4504 UNS S30403 Spectacle Blind Flange manufacturer in India

304L SS Blind Flange Dimensions Chart

Size in Inch	Size in mm	ISO Stud Size	RF Height	Outer Dia.	RF Dia.	Hole Size	PCD	No of Bolts	Bolt Size UNC	Flange Thickness	RF Stud Length	Weight in kg
			D	A	C		E			B
1/2	15	M20	7	135	34.9	7/8	88.9	4	3/4	30.2	120	3.2
3/4	20	M20	7	140	42.9	7/8	95.2	4	3/4	31.8	125	3.7
1	25	M24	7	160	50.8	1	108	4	7/8	35	140	5
1 1/4	32	M27	7	185	63.5	1 1/8	130.2	4	1	38.1	150	7.8
1 1/2	40	M30	7	205	73	1 1/4	146	4	1 1/8	44.5	170	10.5
2	50	M27	7	235	92.1	1 1/8	171.4	8	1	50.9	180	18
2 1/2	65	M30	7	265	104.8	1 1/4	196.8	8	1 1/8	57.2	195	25.5
3	80	M33	7	305	127	1 3/8	228.6	8	1 1/4	66.7	220	39
4	100	M39	7	355	157.2	1 5/8	273	8	1 1/2	76.2	255	61.5
5	125	M45	7	420	185.7	1 7/8	323.8	8	1 3/4	92.1	300	102
6	150	M52	7	485	215.9	2 1/8	368.3	8	2	108	345	157
8	200	M52	7	550	269.9	2 1/8	438.2	12	2	127	380	241
10	250	M64	7	675	323.8	2 5/8	539.8	12	2 1/2	165.1	490	470
12	300	M72	7	760	381	2 7/8	619.1	12	2 3/4	184.2	540	575

Price list of Stainless Steel 304L Flanges

304L Stainless Steel Flanges Price Per Piece in India	SS 304L Pipe Flanges Price in INR	ASTM A182 F304L Flanges Price in UAE Dirham	Stainless Steel 304L Flange Price in USD
FLANGES STAINLESS STEEL WN RF, 150#, 10S BORE, A182 GR. 304L Per KG	419	UAE Dirham 20.37	$5.55
SA 182 F304L ANSI B16.5 DN80, 150# SORF Per Kg	502	UAE Dirham 24.40	$6.64
FLANGES SS SW RF, 300#, 40S BORE, A182 GR 304L Per Kg	240	UAE Dirham 11.67	$3.18
FLANGES STAINLESS STEEL SA 182 F304L ANSI B16.5 DN100, 150# BLRF Per Kg	432	UAE Dirham 21.00	$5.72

Before Buying Compare our price with other SS 304L Flanges manufacturer in India. This is an approximate Price of A182 304L Flange in India. Feel free to contact us latest Stocklist of 304L Stainless Steel Flange in Mumbai.

304L Stainless Steel Weld Neck Flange Tolerance Chart In Mm

Flange		Tolerance Table
D	Inside Diameter (I.D.)	10" and smaller: ±1/32" (0.8 mm) 12" thru 18": +1/8" (3.2 mm) 20" and larger: -1/16" (1.6 mm)
K	Length of hub	10" and smaller: ±1/16" (1.6 mm) 12" and larger: ±1/8" (3.2 mm)
B	Diameter of contact face	1/16" raised face: ±1/32" (0.8 mm) 1/4" RF (Raised Face), T/G (Tongue & Groove), (male & female), (m/f): ±1/64" (0.4 millimeter)
A	O.D. (Outside Diameter)	When O.D. (Outside Diameter) is 24" or less: ±1/16" (1.6 millimeter) When O.D. (Outside Diameter) is over 24": ±1/8" (3.2 millimeter)
J	Diameter of hub at base	When hub base is 24" or smaller: ±1/16" (1.6 millimeter) When hub base is over 24": ±1/8" (3.2 millimeter)
P	Drilling	Circle Bolts: ±1/16" (1.6 mm) Bolts hole spacing: ±1/32" (0.8 mm)
	Eccentricity of bolt circle with respect to facing	2 1/2" and smaller ±1/32" (0.8 mm) maximum 3" and larger ±1/16" (1.6 mm) maximum
H	Diameter of hub at point of welding	5" and smaller: +3/32" (2.4 mm), -1/32" (0.8 mm) 6" and larger: +5/32" (4.0 mm), -1/32 (0.8 mm)
C	Thickness	18" and smaller: ±1/8" (3.2 mm), -0" 20" and larger: ±3/16" (4.8 mm), -0"

Check EN 1092-2 PN40 AISI 304L Stainless Steel Threaded Flange and 1.4307 Stainless Steel Forged Flange ASTM specification & price list

A182 F304l Chemical Composition

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 - 20	-	8 - 13	-

ASTM A182 F304l Equivalent

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
SS 304L	1.4306 / 1.4307	S30403	SUS 304L	3304S11	03-18-11	Z3CN18-10	X2CrNi18-9 / X2CrNi19-11

304l Flange Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1400 °C (2550 °F)	Psi - 75000 , MPa - 515	Psi - 30000 , MPa - 205	35 %

Physical Properties of 304L SS RTJ Flange

Density lbm/in3	Thermal Conductivity (BTU/h ft. °F)	Electrical Resistivity (in x 10-6)	Modulus of Elasticity (psi x 106	Coefficient of Thermal Expansion (in/in)/ °F x 10-6	Specific Heat (BTU/lb/ °F)	Melting Range (°F)
at 68°F: 0.285	9.4 at 212°F	28.3 at 68°F	28	9.4 at 32 – 212°F	0.1200 at 68°F to 212°F	2500 to 2590
	12.4 at 932 °F	39.4 at 752°F		10.2 at 32 – 1000°F
		49.6 at 1652 °F		10.4 at 32 – 1500°F

Different Types of Stainless Steel 304L Flanges

Stainless Steel 304L Weld Neck Flanges

300 LBS SA182 Gr F304L WNRF Flange

Stainless Steel UNS S30403 Socket Weld Flange

600 LBS 304L SS SWRF Flanges

SA182 Grade F304L Slip On Flange

150 LBS 304L SS SORF Flanges

DIN 1.4306 Blind Flange

900 LBS SS 304L BLRF Flanges

ASME SA182 F304L Lapped Joint Flange

ASTM A182 Gr F304L Orifice Flanges

304L Stainless Steel Spectacle Blind Flange

2500 LBS Stainless Steel 304L Tongue & Groove Flange

A182 F304L Nipoflange Flanges

1500 LBS ASTM A182 F304L Long Weld Neck Flange

A182 Gr F304L Reducing Flanges

SS 304L Ring Joint Flange

5000 NB 304L Stainless Steel Girth Flanges

ASTM A182 F304L Stainless Steel Expander Flanges

15 NB UNS S30403 Screwed Flange

ASTM A182 Grade F304L Threaded Flange

304L Stainless Steel Flanges

ASME SA 182 F304l Flanges Yield Strength

Yield Strength

25 ksi

AISI 304l Flange Melting Point

Melting Point

1450 °C

Heat Treatment of 304 Stainless Steel Weld Neck Flange

Rapid cooling following heating to 1010-1120°C can be used for solution treatment or annealing.

Applications of DIN 1.4307 Flanges

• Marine Applications
• Fossil Fuel Power Plants
• Paper & Pulp
• Refineries
• Nuclear Power
• Oil And Gas Industry
• Power Plants
• Ship Building

Stock List of 304L Stainless Steel Flanges

304L SS Spectacle Blind Flanges	Stainless Steel 304L Socket Weld Flange
UNS S30403 Industrial Flanges	304L Stainless Steel Flanges
SS 304L WNRF Flanges	ASTM A182 F304L Weld Neck Flange
A182 F304L Threaded Flanges	DIN 1.4306 Pipe Flanges
ASTM A182 Gr F304L Lap Joint Flanges	SS 304L Socket Weld Flanges
Stainless Steel UNS S30403 Reducing Flanges	SS 304L Plate Flange
Stainless Steel 304L Lap Joint Flange	304L Stainless Steel RTJ Flange
304L Stainless Steel Ring Type Joint Flanges	304L Stainless Steel Flange
ASME SA182 F304L Slip On Flanges	Stainless Steel 304L Flanges
SA182 Grade F304L Socket Weld Flanges	304L Stainless Steel Pipe Flange
SA182 Gr F304L Screwed Flanges	ASTM A182 F304L Stainless Steel Lap Joint Flanges
SS 304L Forged Flanges	304L Stainless Steel Blind Flanges
ASME SA182 F304L Pipe Flange	A182 Gr F304L Blind Flanges
ASTM A182 Grade F304L Orifice Flanges	Stainless Steel 304L Lapped joint Flanges

Mechanical Difference Between 304 Vs 304L Stainless Steel Flanges

When compared to "normal" grade 304 stainless steel alloy, grade 304L has a modest but significant drop in important mechanical performance attributes. The ultimate tensile strength (UTS) of 304L, for example, is about 85 ksi (586 MPa), which is lower than the UTS of ordinary grade 304 stainless steel, which is 90 ksi (620 MPa). As a result, a 304L SS flange would be structurally weaker than a regular 304 flange.

Welding of SS 304L Flanges

Both with and without fillers, the fusion welding performance of stainless steel 304 is excellent. Grade 308 stainless steel filler rods and electrodes are recommended for stainless steel 304. The recommended filler for 304L is 308L.