Revinox Steel & Alloys LLP

ASME SA 350 Grade Lf3 Forged Flanges Manufacturer in India With SCH 10 to 160

Specification of ASTM A350 LF3 Flanges

ASTM A350 LF3 Flanges Sizes

SCH: Sch 5 to XXS
NPS: 1/2″ to 48″
Class:150 to 2500#
Life Span:More than 50 years

ASTM A350 Grade Lf3 Pipe Flanges Types

Blind
Socket Weld
Slip On
Weld Neck etc.

ASTM A350 Gr Lf3 SORF Flange Standards

ASME B16.47 Series A & B
MSS SP44
ASME B16.5
ASTM A182 | ASME SA 182

ASTM A350 Lf3 Cl 1 Blind Flange Process

Casting
Forging
Cutting
Rolling

ASTM A350M Threaded Pipe Flange Threads

FNPT
BSPT
BSPP
NPT, MNPT

ASTM A 350 LF3 Exhaust Flanges Testing

Pressure
Tensile
PMI
Hardness test

ASME SA 350 LF3 Forged Flanges Finish

Spiral/Concentric
Mirror
Smooth
Serrated

ASME SA 350 Grade Lf3 Puddle Flange Face

ASME SA 350 Gr Lf3 Flange Origin

Indian
European
Japan
Korean

Carbon Steel A350 LF3 Lap Joint Flange Advantages

Low maintenance
High tensile strength
Excellent resistance

ASTM A350 LF3 Weld Neck Flange Supporting Material

Gasket
Flange Bolts
Ring Joint

ASTM A350 Gr Lf3 Flanges Testing Facility

X-ray Detector
NDT
Hydro test

SA 350 Grade Lf3 Forged Flanges Standards

Most Genuine ASTM A350 LF3 Flanges Manufacturer in India As Per International Standards

Standards
ASME B16.5	Steel Pipe Flanges and Flanged Fittings
ASME B16.10	Face-to-Face and End-to-End Dimensions of Ferrous Valves
ASME B16.47	Large Diameter Steel Flanges
ASME B16.11	Forged Steel Fittings, Socket-Welding and Threaded
ASME B16.30	Valves-Flanged, Threaded and Welding End
ASME B16.34	Valves-Flanged, Threaded and Welding End
ASME B16.9	Factory-Made Wrought Steel Butt-Welding Fittings
API 602	Compact Design Carbon Steel Gate Valves for Refinery Use
API 605	Large Diameter Carbon Steel Flanges
AWS A5.1	Mild Steel Covered Arc-Welding Electrodes
AWS A5.5	Low Alloy Steel Covered Arc-Welding Electrodes
API 600	Steel Gate Valves with Flanges or Butt-Welding Ends

Carbon Steel LF3 Flanges Thickness Chart

Normal Pipe Sizes	O.D.	STD Wall	Schedule 10	Schedule 20	Schedule 30	Schedule 40	Schedule 60	Schedule 80	Schedule 100	Schedule 120	Schedule 140	Schedule 160	EXT Hvy	XX Hvy
½	0.84	0.109	0.083	–	–	0.109	–	0.147	–	–	–	0.188	0.147	0.294
2	2.375	0.154	0.109	–	–	0.154	–	0.218	–	–	–	0.344	0.218	0.436
2 ½	2.875	0.203	0.12	–	–	0.203	–	0.276	–	–	–	0.375	0.276	0.552
¾	1.05	0.113	0.083	–	–	0.113	–	0.154	–	–	–	0.219	0.154	0.308
1	1.315	0.133	0.109	–	–	0.133	–	0.179	–	–	–	0.25	0.179	0.358
3	3.5	0.216	0.12	–	–	0.216	–	0.3	–	–	–	0.438	0.3	0.6
3 ½	4	0.226	0.12	–	–	0.226	–	0.318	–	–	–	–	0.318	0.636
4	4.5	0.237	0.12	–	–	0.237	–	0.337	–	0.438	–	0.531	0.337	0.674
1 ¼	1.66	0.14	0.109	–	–	0.14	–	0.191	–	–	–	0.25	0.191	0.382
1 ½	1.9	0.145	0.109	–	–	0.145	–	0.2	–	–	–	0.281	0.2	0.4
5	5.563	0.258	0.134	–	–	0.258	–	0.375	–	0.5	–	0.625	0.375	0.75
6	6.625	0.28	0.134	–	–	0.28	–	0.432	–	0.562	–	0.719	0.432	0.864
8	8.625	0.322	0.148	0.25	0.277	0.322	0.406	0.5	0.594	0.719	0.812	0.906	0.5	0.875
10	10.75	0.365	0.165	0.25	0.307	0.365	0.5	0.594	0.719	0.844	1	1.125	0.5	1
12	12.75	0.375	0.18	0.25	0.33	0.406	0.562	0.688	0.844	1	1.125	1.312	0.5	1
14	14	0.375	0.25	0.312	0.375	0.438	0.594	0.75	0.938	1.094	1.25	1.406	0.5	–
16	16	0.375	0.25	0.312	0.375	0.5	0.656	0.844	1.031	1.219	1.438	1.594	0.5	–
18	18	0.375	0.25	0.312	0.438	0.562	0.75	0.938	1.156	1.375	1.562	1.781	0.5	–
20	20	0.375	0.25	0.375	0.5	0.594	0.812	1.031	1.281	1.5	1.75	1.969	0.5	–
22	22	0.375	0.25	–	–	–	–	–	–	–	–	–	0.5	–
24	24	0.375	0.25	0.375	0.562	0.688	0.969	1.219	1.531	1.812	2.062	2.344	0.5	–
26	26	0.375	–	–	–	–	–	–	–	–	–	–	0.5	–
30	30	0.375	0.312	0.5	0.625	–	–	–	–	–	–	–	0.5	–
36	36	0.375	0.312	0.5	0.625	0.75	–	–	–	–	–	–	0.5	–
40	40	0.375	–	–	–	–	–	–	–	–	–	–	0.5	–
42	42	0.375	–	–	–	–	–	–	–	–	–	–	0.5	–

Purchase A350 Grade LF3 Class 1 Slip On and Blind Flanges With OD 1/2 to 24′” and Custom Upto 60″

ASTM A350 Grade LF3 Slip On Flanges Size Chart

Nominal Pipe Size (inches)	OD (mm)	No. of Bolts	Hole Diameter (mm)	Bolt Circle Diameter (mm)	Thickness (mm)
3/4	114.3	4	16.0	102.0	14.3
1	127.0	4	16.0	114.3	15.9
1 1/2	146.0	4	19.0	127.0	17.5
1/2	91.4	4	16.0	89.0	13.7
2	168.3	4	19.0	140.0	19.1
3	219.1	4	22.0	152.0	21.3
4	241.3	8	22.0	165.0	23.0
6	323.9	8	25.0	190.5	25.4
8	406.4	8	25.0	215.0	28.6
10	508.0	12	32.0	241.0	30.2
12	610.0	12	35.0	269.0	33.4

A350 Lf3 Carbon Steel Flanges Dimensions

Nominal Pipe Size	Flanges Inside Diameter (ID) (inch)	Flanges Outside Diameter (OD) (inches)
Nominal Pipe Size	Flanges Inside Diameter (ID) (inch)	Class 150	Class 300	Class 400	Class 600	Class 900
1	1.31	2.625	2.875	2.875	2.875	3.125
1 1/4	1.66	3	3.25	3.25	3.25	3.50
1 1/2	1.91	3.375	3.75	3.75	3.75	3.875
2	2.38	4.125	4.375	4.375	4.375	5.625
1/2	0.84	1.875	2.125	2.125	2.125	2.50
3/4	1.06	2.25	2.625	2.625	2.625	2.75
2 1/2	2.88	4.875	5.125	5.125	5.125	6.50
3	3.50	5.375	5.875	5.875	5.875	6.625
4	4.50	6.875	7.125	7.00	7.625	8.125
5	5.56	7.75	8.50	8.375	9.50	9.75
6	6.62	8.75	9.875	9.75	10.50	11.375
8	8.62	11	12.125	12.00	12.625	14.125
10	10.75	13.375	14.25	14.125	15.75	17.125
12	12.75	16.125	16.625	16.50	18.00	19.625

Supplier Of A350 Gr Lf3 Weld Neck and Socket Weld Flange in Mumbai With Pressure Class 150 to 2500

A350 LF3 Socket Weld Flange Pressure Rating Chart

TEMP °C	Class 150	Class 300	Class 400	Class 600	Class 900	Class 1500	Class 2500
-29 TO 38	19.6	51.1	68.1	102.1	153.2	255.3	425.5
50	19.2	50.1	66.8	100.2	150.4	250.6	417.7
325	9.3	38.7	51.6	77.4	116.1	193.6	322.6
500	2.8	11.8	15.7	23.5	35.3	58.8	97.9
538	1.4	5.9	7.9	11.8	17.7	29.5	49.2
100	17.7	46.6	62.1	93.2	139.8	233	388.3
150	15.8	45.1	60.1	90.2	135.2	225.4	375.6
200	13.8	43.8	58.4	87.6	131.4	219	365
350	8.4	37.6	50.1	75.1	112.7	187.8	313
375	7.4	36.4	48.5	72.7	109.1	181.8	303.1
400	6.5	34.7	46.3	69.4	104.2	173.6	289.3
425	5.5	28.8	38.4	57.5	86.3	143.8	239.7
450	4.6	23	30.7	46	69	115	191.7
475	3.7	17.4	23.2	34.9	52.3	87.2	145.3
250	12.1	41.9	55.9	83.9	125.8	209.7	349.5
300	10.2	39.8	53.1	79.6	119.5	199.1	331.8

A350 LF3 Carbon Steel Pipe Flanges Working Pressures in Bar

Get Tensile Tested Carbon Steel A350 LF3 Pipe Flanges As Per ASME B16.5 and ASME B16.47 A, B Standard

Temperature	Class 300	Class 150
50°C	50.1	19.2
100°C	46.6	17.7
200°C	43.8	13.8
−29~38°C	51.1	19.6
300°C	39.8	10.2
350°C	37.6	8.4
400°C	34.7	6.5
450°C	23.0	4.6
500°C	11.8	2.8

Carbon Steel A350 LF3 Pipe Flanges Testings

Tensile Test
Impact Test
Hardness testing
Hydrostatic testing
Chemical analysis
Charpy V-notch impact test
Grain size testing
Positive material identification (PMI)

SA350 LF3 Pipe Flanges Weight Chart

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

SA 350 LF3 Blind Flanges Heat Treatment

Expert ASTM A350 LF3 Flanges Manufacturer in India delivering excellence in both design and material strength.

Heat Treatment Process	Temperature (°C)
Quenching	1050-1100
Tempering	650-700
Normalization	900-950
Stress Relief	550-650

Most Common Types Of ASTM A350 LF3 Flanges

Best ASTM A350 LF3 Flanges Supplier in India, Stock and Supply Custom Shapes As Per Your Project Requirment

ASTM A350 LF3 Forged Flanges

ASTM A350 Grade Lf3 Slip On Flange

ASTM A350 Gr Lf3 Blind Flanges

ASTM A350 Lf3 Cl 1 Weld Neck Flange

ASTM A350 Grade LF3 Class 1 Socket Weld Flange

ASTM A350M Threaded Flange

ASTM A 350 LF3 Exhaust Flange

ASME SA 350 LF3 Plate Flange

ASME SA 350 Grade Lf3 Lap Joint Flanges

ASME SA 350 Gr Lf3 Orifice Flanges

Carbon Steel A350 LF3 Ring Type Joint Flange

ASTM A350 LF3 Spectacle Blind Flanges

Understand Difference Between ASTM A350 Lf2 vs Lf3

ASTM A350 Lf2 vs Lf3

Property	ASTM A350 Grade LF2	ASTM A350 Grade LF3
Material Type	Carbon Steel	Nickel Alloyed Carbon Steel
Minimum Service Temperature	−46°C (−50°F)	−101°C (−150°F)
Charpy V-Notch Impact Requirement	20 ft·lbf at −46°C	20 ft·lbf at −101°C
Tensile Strength (MPa)	485–655	485–655
Yield Strength (MPa)	≥240	≥240

ASTM A350 Lf3 Flange Equivalent Material

ASTM	ASME	Grade	JIS
A350	SA350	Lf3	SB 450

A350 Lf3 Flange Chemical Composition

Reliable ASTM A350 LF3 Flanges Supplier in India with a commitment to innovation and product integrity.

Element	Composition
Phosphorus, max	0.035 max
Sulfur, max	0.040 max
Silicon [Note A]	0.20–0.35
Nickel	3.3–3.7
Carbon, max	0.20 max
Manganese	0.90 max
Chromium	0.30 max
Molybdenum	0.12 max
Copper	0.40 max
Columbium	0.02 max
Vanadium	0.03 max

A350 Gr Lf3 Weld Neck Flange Mechanical Properties

Tensile Strength, minimum	70,000 psi [485 MPa]
Reduction of area, minimum	30% minimum
Hardness, HB, maximum	187
Minimum. Yield Point	36,000 psi [250 MPa]

Carbon Steel A350 LF3 Flange Physical Properties

Property	Value
Melting Point	1370°C (2500°F)
Electrical Resistivity	0.000015 Ω·m
Density	7.85 g/cm³
Thermal Conductivity	50 W/m·K
Specific Heat	0.46 J/g·K
Coefficient of Thermal Expansion	11.2 x 10-6 /°C (6.2 x 10-6 /°F)

ASTM A350 Lf3 Class 1 Flange Thermal Expansion

Properties	Imperial	Metric
Thermal expansion co-efficient (@0-100°C/32-212°F)	5.78 µin/in°F	10.4 µm/m°C
Thermal conductivity	150 BTU in/hr.ft².°F	21.6 W/mK

ASTM A350 LF3 Flanges Delivery Time As Per Country

Changes in Price Extra 5 %
Export to	Shipping Time in Days
Puerto Rica	45
Gabon	45-60
Bahamas	60
Denmark	35
Russia	20
Panama	45
Equatorial Guinea	45-60
The Republic Of Congo	45-60
Costa Rica	45
Norway	45

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ASTM A350 LF3 FLANGES

ASME SA 350 Grade Lf3 Forged Flanges Manufacturer in India With SCH 10 to 160

Purchase A350 Grade LF3 Class 1 Slip On and Blind Flanges With OD 1/2 to 24′” and Custom Upto 60″

Supplier Of A350 Gr Lf3 Weld Neck and Socket Weld Flange in Mumbai With Pressure Class 150 to 2500

Get Tensile Tested Carbon Steel A350 LF3 Pipe Flanges As Per ASME B16.5 and ASME B16.47 A, B Standard

Understand Difference Between ASTM A350 Lf2 vs Lf3