Home >> Products >> Flanges

Flanges Supplier & Manufacturer

Q: What are Flanges?

Flanges are connecting pieces that are used to join pipes, valves, pumps and other equipment in a piping system. They provide a means of sealing the joint between two pipes and can be attached using bolts.

Q: What are Flanges Used For?

Flanges Fittings are used to connect pipes, valves, pumps, & other equipment in a piping system. They provide a means of sealing the joint between two pipes and can be attached using bolts.

Q: What are the Different Types of Flanges?

There are different types of Flanges Slip-on flanges, Weld neck flanges, Blind flanges, Lap joint flanges, Socket weld flanges, Threaded flanges, Orifice flanges, Spectacle flanges, Long weld neck flanges, Ring joint flanges.

Flanges

ANSI B16.5 Stainless Steel Slip-On Flanges, Carbon Steel Orifice Flanges, ASTM A182 Alloy Steel Blind Flanges Supplier & Exporter.

Duplex Steel Threaded Flanges, SS ANSI B16.47 Series A & B Lap-joint Flanges, Stainless Steel Flanges, Stainless Steel Slip On Raised Flanges, Flanges Fittings, Flanges, Nickel Alloy Spectacle Flanges Manufacturer.

One of the widely used joining equipment available is flanges. They are generally used when the joints are to be connected or need dismantling. It provides good flexibility for a low level of maintenance. The Flanges are generally used to join the pipe parts with equipment such as valves. The pipeline system may contain a breakup flange that must be maintained regularly during the plant operation.

Flanged joints or connections comprise 3 essential independent and separable components: bolting, gaskets, and flanges. To gain a high level of joining, the application and selection of the element must be done appropriately. It can be classified based on facing type, based on connection type, based on material, and based on temperature rating.

The flanges can be produced from low alloy steel, stainless steel, exotic material or a combination of materials, and carbon steel. It can be covered in various specified fittings. Before the flanges are produced, certain things like bolt circles, outer and inner body diameters, and hub lengths are tested and inspected.

Based on pressure-temperature class and heat no, the flanges can be marked using the manufacturing logo, material grade, material code, thickness, size, and service rating. The compact flanges help in increasing high installation, procurement, and maintenance costs. Thus the material is made of a large diameter, so more space is required. With sophisticated designing and installation requirements, the tolerance level can be closely matched with the desired product.

Some standard flanges types are threaded, socket weld, slip-on, lap joint, and weld neck flanges. The flange facing type could be tongue & groove, raised face, flat face, ring joint, and female/male type. The flange face could be a serrated type or smooth type.

The flanges are rated based on the pressure-temperature class. It got designed with large diameter flanges with the appropriate pressure-temperature rating.

The Flanges are tested using the test- flaring test, flattening test, hardness test, macro/micro test, and intergranular corrosion test.

Stainless Steel Flanges are manufactured in compliance with different quality standards. SS Flanges are known for being Durable, Weather Resistant, High Tensile Strength, Anti Corrosive, Resistance to acid and alkaline solutions, Resilient, Rugged construction, and more. Stainless Steel Slip On Raised Flanges is known for their Sturdy & compact structure, Impeccable finish, Rust proof surface, Accurate hole alignment, and Can sustain elevated temperature and pressure. Stainless Steel Socket Weld Flanges find application in steel plants, pumps and petrochemicals, sugar mills & distilleries, cement, construction and various other industries.

Stainless Steel Threaded Flanges are also used in applications of Engineering, Construction, Offshore, Oil fields, Shipbuilding, Marine Projects, Nuclear Projects, Medical, Instrumentation, etc. Our Stainless Steel Lap, Joint Flanges range is fabricated from high-quality factor inputs per industry quality standards.

Surya Steel & Alloys is a known manufacturer of Flanges, which are acknowledged among customers for their sturdy design. As Stainless Steel Flanges Suppliers, we are highly recognized as a prominent firm manufacturing and supplying a wide endowment of this product, which are used in varied industries for diverse applications.

What are Flanges?

Flanges are connecting pieces that are used to join pipes, valves, pumps and other equipment in a piping system. They provide a means of sealing the joint between two pipes and can be attached using bolts.

What are Flanges Used For?

Flanges Fittings are used to connect pipes, valves, pumps, & other equipment in a piping system. They provide a means of sealing the joint between two pipes and can be attached using bolts.

What are the Different Types of Flanges?

There are different types of Flanges Slip-on flanges, Weld neck flanges, Blind flanges, Lap joint flanges, Socket weld flanges, Threaded flanges, Orifice flanges, Spectacle flanges, Long weld neck flanges, Ring joint flanges.

Specifications :

Size	:	½" (15 NB) to 48" (1200NB)
Standards	:	ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings	:	Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 \| PN6, PN10, PN16, PN25, PN40, PN64 etc.
Type	:	Blind Flanges Exporter, Screwed Flanges, Weld Neck Flanges, Lapped joint Flanges, Reducing Flanges

Flanges Equivalent Chart

Material of Construction	Standard	Grades
Carbon Steel Flanges	ASTM A105	Gr. F42,46,52,56,60,65,70
Alloy Steel Flanges	ASTM A182	F1,F5,F9,F11,F22,F91
Stainless Steel Flanges	ASTM A182 , A240	F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Duplex Steel Flanges	ASTM / ASME A/SA 182	F 44, F 45, F51, F 53, F 55, F 60, F 61
Monel Flanges	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.	Monel 400 (UNS No. N04400)
Monel K500 Flanges	ASTM / ASME SB 564	Monel 500 (UNS No. N05500)
Inconel Flanges	Inconel 600	UNS N06600, Werkstoff Nr. 2.4816
Inconel 600 Flanges	ASTM B 564/ ASME SB 564	UNS N06600 / Werkstoff Nr. 2.4816

Price List of Flanges

Description	Size	Aprox. Wt/Unit	FOB INR	CIF INR	FOB USD	CIF USD	FOB STGP	CIF STGP	FOB EURO$	CIF EURO$
SORF FLANGES ASTM A105 B16.5 150# Price	15mm	0.49	90.05	97.88	1.364	1.483	0.919	0.999	1.637	1.780
SORF FLANGES ASTM A105 B16.5 150# Price	20mm	0.61	108.68	118.13	1.647	1.790	1.109	1.205	1.976	2.148
SORF FLANGES ASTM A105 B16.5 150# Price	25mm	0.90	122.65	133.31	1.858	2.020	1.252	1.360	2.230	2.424
SORF FLANGES ASTM A105 B16.5 150# Price	32mm	1.13	178.54	194.06	2.705	2.940	1.822	1.980	3.246	3.528
SORF FLANGES ASTM A105 B16.5 150# Price	40mm	1.48	189.41	205.88	2.870	3.119	1.933	2.101	3.444	3.743
SORF FLANGES ASTM A105 B16.5 150# Price	50mm	2.37	248.40	270.00	3.764	4.091	2.535	2.755	4.516	4.909
SORF FLANGES ASTM A105 B16.5 150# Price	65mm	3.60	457.99	497.81	6.939	7.543	4.673	5.080	8.327	9.051
SORF FLANGES ASTM A105 B16.5 150# Price	80MM	4.10	481.28	523.13	7.292	7.926	4.911	5.338	8.750	9.511
SORF FLANGES ASTM A105 B16.5 150# Price	100mm	6.04	659.81	717.19	9.997	10.866	6.733	7.318	11.997	13.040
SORF FLANGES ASTM A105 B16.5 150# Price	125mm	6.53	884.93	961.88	13.408	14.574	9.030	9.815	16.090	17.489
SORF FLANGES ASTM A105 B16.5 150# Price	150mm	7.78	1161.27	1262.25	17.595	19.125	11.850	12.880	21.114	22.950
SORF FLANGES ASTM A105 B16.5 150# Price	200mm	12.98	1637.89	1780.31	24.816	26.974	16.713	18.166	29.780	32.369
SORF FLANGES ASTM A105 B16.5 150# Price	250mm	17.96	2716.88	2953.13	41.165	44.744	27.723	30.134	49.398	53.693
SORF FLANGES ASTM A105 B16.5 150# Price	300mm	29.06	3958.88	4303.13	59.983	65.199	40.397	43.909	71.980	78.239
SORF FLANGES ASTM A105 B16.5 150# Price	350mm	36.96	6210.00	6750.00	94.091	102.273	63.367	68.878	112.909	122.727
SORF FLANGES ASTM A105 B16.5 150# Price	400mm	47.28	8694.00	9450.00	131.727	143.182	88.714	96.429	158.073	171.818
SORF FLANGES ASTM A105 B16.5 150# Price	450mm	52.20	9315.00	10125.00	141.136	153.409	95.051	103.316	169.364	184.091
SORF FLANGES ASTM A105 B16.5 150# Price	500mm	68.78	12420.00	13500.00	188.182	204.545	126.735	137.755	225.818	245.455
SORF FLANGES ASTM A105 B16.5 150# Price	600mm	95.03	18630.00	20250.00	282.273	306.818	190.102	206.633	338.727	368.182

Flanges Pressure Ratings

Maximum Allowable non-shock Pressure (psig)
Temperature (oF)	Pressure Class (lb)
	150	300	400	600	900	1500	2500
	Hydrostatic Test Pressure (psig)
	450	1125	1500	2225	3350	5575	9275
-20 to 100	290	750	1000	1500	2250	3750	6250
200	260	750	1000	1500	2250	3750	6250
300	230	730	970	1455	2185	3640	6070
400	200	705	940	1405	2110	3520	5865
500	170	665	885	1330	1995	3325	5540
600	140	605	805	1210	1815	3025	5040
650	125	590	785	1175	1765	2940	4905
700	110	555	740	1110	1665	2775	4630
750	95	505	675	1015	1520	2535	4230
800	80	410	550	825	1235	2055	3430
850	65	320	425	640	955	1595	2655
900	50	225	295	445	670	1115	1855
950	35	135	185	275	410	685	1145
1000	20	85	115	170	255	430	715

Flange weight

CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
150 lb	½	1	1	2	1	2	2
	¾	2	2	2	2	2	2
	1	2	2	2	2	2	3
	1¼	3	3	3	3	3	3
	1½	3	3	3	3	4	4
	2	5	5	5	5	5	6
	2½	8	8	8	8	7	10
	3	9	9	9	9	9	11.5
	3½	11	12	11	11	13	12
	4	13	13	13	13	17	16.5
	5	15	15	15	15	20	21
	6	19	19	19	19	27	26
	8	30	30	30	30	47	42
	10	43	43	43	43	70	54
	12	64	64	64	64	123	88
	14	90	90	90	105	140	114
	16	106	98	98	140	180	140
	18	130	130	130	160	220	165
	20	165	165	165	195	285	197
	22	185	185	185	245	355	225
	24	220	220	220	275	430	268
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
300 lb	½	2	2	3	2	2	2
	¾	3	3	3	3	3	3
	1	3	3	3	3	4	4
	1¼	4.5	4.5	4	4.5	6	5
	1½	6.5	6.5	6	6.5	7	7
	2	7	7	7	7	8	9
	2½	10	10	10	10	12	12
	3	13	14	13	14.5	16	18
	3½	17	17	17	17	21	20
	4	23.5	24	22	24	28	26.5
	5	29	31	28	28	37	36
	6	39	39	39	39	50	45
	8	58	58	58	58	81	69
	10	81	81	81	91	124	100
	12	115	115	115	140	185	142
	14	165	165	165	190	250	206
	16	210	220	190	234	315	250
	18	253	280	250	305	414	320
	20	315	325	315	375	515	400
	22	370	370	370	435	640	465
	24	490	490	475	550	800	580
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
400 lb	½	2	2	2	2	2	3
	¾	3	3	3	3	3	3.5
	1	3.5	3.5	3.5	3.5	4	4
	1¼	4.5	4.5	4.5	4.5	6	4.5
	1½	6.5	6.5	6.5	6.5	8	8
	2	8	8	8	8	10	10
	2½	12	12	12	11	15	14
	3	15	15	15	14	20	18
	3½	21	21	21	20	29	26
	4	26	26	26	25	33	35
	5	31	31	31	29	44	43
	6	44	44	44	42	61	57
	8	67	67	67	64	100	89
	10	91	91	91	110	155	125
	12	130	130	130	152	226	175
	14	191	191	191	210	310	233
	16	253	253	253	280	398	295
	18	310	310	310	345	502	360
	20	378	378	378	420	621	445
	22	405	405	405	455	720	505
	24	539	539	539	615	936	640
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
600 lb	½	2	2	2	2	3	3
	¾	3	3	3	3	4	4
	1	4	4	4	4	4	4
	1¼	5	5	5	5	6	6
	1½	7	7	7	7	8	8
	2	9	9	9	9	10	12
	2½	13	13	13	12	15	18
	3	16	16	16	15	20	23
	3½	21	21	21	20	29	26
	4	37	37	37	36	41	42
	5	63	63	63	63	68	68
	6	80	80	80	78	86	81
	8	115	115	115	112	140	120
	10	177	177	177	195	231	190
	12	215	215	215	240	295	226
	14	259	259	259	290	378	347
	16	366	366	366	400	527	481
	18	476	476	476	469	665	555
	20	612	612	612	604	855	690
	22	590	590	590	670	1000	720
	24	876	876	876	866	1250	977
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
900 lb	½	6	6	6	6	4	7
	¾	6	6	6	6	6	7
	1	7.5	7.5	7.5	7.5	9	8.5
	1¼	10	10	10	10	10	10
	1½	14	14	14	14	14	14
	2	22	22	22	21	25	24
	2½	31	31	31	25	32	31
	3	36	36	36	29	35	36
	4	53	53	53	51	54	53
	5	83	83	83	81	87	86
	6	110	110	110	105	115	110
	8	172	172	172	190	200	187
	10	245	245	245	277	290	268
	12	326	326	326	371	415	372
	14	400	400	400	415	520	562
	16	459	459	459	488	619	685
	18	647	647	647	670	880	924
	20	792	792	792	868	1107	1164
	24	1480	1480	1480	1659	2099	2107
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
1500 lb	½	6	6	6	6	4	7
	¾	6	6	6	6	6	7
	1	8	8	8	8	9	9
	1¼	10	10	10	10	10	10
	1½	14	14	14	14	14	14
	2	25	25	25	25	25	25
	2½	36	36	36	35	35	36
	3	48	48	48	47	48	48
	4	73	73	73	75	73	73
	5	132	132	132	140	140	132
	6	165	165	165	170	160	165
	8	260	260	260	286	302	275
	10	436	436	436	485	510	455
	12	667	667	667	749	775	690
	14	940	940	940	890	975	940
	16	1250	1250	1250	1250	1300	1250
	18	1625	1625	1625	1475	1750	1625
	20	2050	2050	2050	1775	2225	2050
	24	2825	2825	2825	2825	3625	3325
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
2500 lb	½	….	7	….	7	7	8
	¾	….	9	….	8	10	9
	1	….	12	….	12	12	13
	1¼	….	18	….	17	18	20
	1½	….	25	….	24	25	28
	2	….	38	….	37	39	42
	2½	….	55	….	53	56	52
	3	….	83	….	80	86	94
	4	….	127	….	122	133	146
	5	….	210	….	204	223	244
	6	….	323	….	314	345	378
	8	….	485	….	471	533	576
	10	….	925	….	897	1025	1068
	12	….	1300	….	1262	1464	1608

Chemical Composition of Flanges

Element	Composition,%
Carbon (C)	0.35max
Manganese (Mn)	0.60–1.05
Phosphorus (P)	0.035max
Sulfur (S)	0.040max
Silicon (Si)	0.10–0.35
Copper (Cu)	0.40max
Nickel (Ni)	0.40max
Chromium (Cr)	0.30max
Molybdenum (Mo)	0.12max
Vanadium (V)	0.08max

Flanges Physical Properties

Density (lb / cu. in.)	0.284
Specific Gravity	7.9
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.107
Melting Point (Deg F)	2740
Thermal Conductivity	360
Mean Coeff Thermal Expansion	6.7
Modulus of Elasticity Tension	30
Modulus of Elasticity Torsion	11

Flanges Tolerance

Type Of ASME/ ANSI B16.5 2 Inch Carbon Flange	Diameter	Tolerance Chart
(A)	(Outer Diameter)	When Outer Diameter is 24 Inch or less: ±1/16" (1.6 mm) When Outer Diameter is over 24": ±1/8" (3.2 mm)
(D)	(Inner Diameter)	10 Inches and smaller: ±1/32" (0.8 in mm) 12 Inches thru 18": +1/8" (3.2 in mm) 20 Inches and larger: -1/16" (1.6 in mm)
(B)	Contact Face	1/16" (RF): ±1/32" (0.8 mm) 1/4" (RF), Tongue And Groove (male And female): ±1/64" (0.4 mm)
(J)	Hub At Base Dai.	When hub base is 24 inches or smaller: ±1/16" (1.6 millimeter) When hub base is over 24": ±1/8" (3.2 millimeter)
(H)	Diameter of hub at point of welding	5 inch or smaller: +3/32" (2.4 mm), -1/32" (0.8 millimeter) 6 inch or larger: +5/32" (4.0 millimeter), -1/32 (0.8 mm)
(P)	Drilling	(B.C.): ±1/16" (1.6 mm) (B.H.) spacing: ±1/32" (0.8 mm)
	Eccentricity of (bc) with respect to facing	2 1/2" or smaller ±1/32" (0.8 mm) max. 3" or larger ±1/16" (1.6 mm) max.
(C)	(W.T.)	18 inch or smaller: ±1/8" (3.2 mm), -0" 20 inch or larger: ±3/16" (4.8 mm), -0"
(K)	hub Length	10 Inch or smaller: ±1/16" (1.6 millimeter) 12 Inch or larger: ±1/8" (3.2 millimeter)

Mechanical Properties of Flange

Mechanical Properties	Requirements
Tensile strength,min,psi [MPa]	70000 [485]
Yield strength,min,psi [MPa]	36000 [250]
Elongation, min, %	30
Reductionofarea,min,%	30
Hardness,HB,max	187

Types of Flanges :


»	ASTM A182 Stainless Steel Slip-On Flanges
»	Alloy Steel Threaded Flanges Distributor
»	SS Lap-joint Flanges Manufacturer
»	ANSI B16.5 Duplex Steel Blind Flanges
»	Carbon Steel Weld-Neck Flanges Supplier
»	ANSI B16.47 Series A & B Spectacle Flanges
»	Monel 400/ k500 Orifice Flanges Exporter
»	Super Duplex Steel Groove Flanges
»	Nickel Alloy Flat Face Flanges Dealer
»	Inconel Long Neck Flanges Stockiest

Our Products