Low Temperature Carbon Steel LF787 Flanges Manufacturer and Supplier in Kolkata India

Low Temperature Carbon Steel LF787 Flanges

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Esha Steel, based in Kolkata, is a trusted manufacturer and supplier of premium steel products, known for quality and reliability. Among its specialized offerings are Low Temperature Carbon Steel LF787 flanges, designed for applications requiring toughness and durability in sub-zero environments. Manufactured to meet international standards, these flanges ensure excellent performance under challenging low-temperature conditions. With precise engineering and stringent quality control, Esha Steel delivers flanges that offer safety, reliability, and long service life. Ideal for critical industrial piping systems, these LF787 flanges are the preferred choice for projects demanding strength, precision, and consistent performance.

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LTCS LF787 Blind Flanges

Low Temperature Carbon Steel LF787 Forged Flanges

Carbon Steel LF787 Threaded Flanges

What is Low Temperature Carbon Steel LF787 Flanges?

LF787 steel is a low-carbon, low-temperature carbon steel specifically developed for flanges and piping components in cold environments. Its composition includes carbon, manganese, phosphorus, sulfur, and other controlled elements to ensure ductility and toughness. LF787 flanges typically provide a minimum yield strength of 205 MPa and tensile strength between 415–550 MPa. With excellent impact resistance at low temperatures and good weldability, these flanges maintain structural integrity and reliable performance. The material’s combination of toughness, ductility, and strength makes LF787 flanges suitable for demanding low-temperature industrial applications.

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Low Temperature Carbon Steel LF787 Flanges Specification

Material : ASTM A350 LF787 CL1/CL2
Size Range: 1/2″ (15 NB) to 48″ (1200NB), ASME B16.47 Flanges size range: 26″ to 60″
Typical manufacturing specifications: A350 LF787 , ASME A350 LF787
Origin: European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
LTCS A350 LF787 Flanges Manufacturing Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ), LJ, FM , R.T.J , R.J and so on
ANSI ClaLTCS A350 LF787 Flanges: 150 to 2500 Size: 1/2″-24″
AWWA ClaLTCS A350 LF787 Flanges: classes B, D, E, F Size: 3″-144″
ANSI B16.5 A350 LF787 Flanges pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for ASME B16.5
ANSI B16.47 A350 LF787 Flanges pressure classes: 75, 150, 300, 400, 600, 900 for ASME B16.47

Low Temperature Carbon Steel LF787 Flanges Chemical Composition

Element	Composition
Carbon, max	0.07
Manganese	0.40–0.70
Phosphorus, max	0.025
Sulfur, max	0.025
Silicon [Note A]	0.40 max
Nickel	0.70–1.00
Chromium	0.60–0.90
Molybdenum	0.15–0.25
Copper	1.00–1.30
Columbium	0.02 min
Vanadium	0.03 max

Low Temperature Carbon Steel LF787 Flanges Mechanical Properties

Tensile Class	Tensile Strength, ksi [MPa]	Yield Strength, min, ksi [MPa] [Note B, C]	Elongation		Reduction of Area, min, %
Tensile Class	Tensile Strength, ksi [MPa]	Yield Strength, min, ksi [MPa] [Note B, C]	Round Specimen in 4D, min, %	Strip Specimen in 2 Inch [50mm], min, %	Reduction of Area, min, %
Class 2	65–85 [450–585]	55 [380]	20	28	45
Class 3	75–95 [515–655]	65 [450]	20	28	45

If You Are Looking To Buy High Quality Pipes, Sheet, Fittings and Flanges

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Top Manufacturer and Supplier of Low Temperature Carbon Steel LF787 Flanges in Kolkata India

Esha Steel is one of the most prominent manufacturers and suppliers of superior quality Low Temperature Carbon Steel LF787 Flanges in Kolkata India. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.

A350 LF787 Pressure Rating Chart

ASME/ANSI B 16.5	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, LTCS A350 LF787 Lap Joint Flange, Threaded Flange, LTCS A350 LF787 Ring Type Joint Flange
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Blind Flange [Series A & B]
PRESSURE CLASS	75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Slip on Flange, LTCS A350 LF787 Threaded Flange
PRESSURE CLASS	300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Hubbed Slip on Flange, LTCS A350 LF787 Hubbed Threaded Flange, Lapped Pipe End Flange, LTCS A350 LF787 Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange
PRESSURE CLASS	PN 2.5 TO PN 40
BS 4504[PART 1]	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Hubbed Slip-On Hubbed Threaded, Plate Flange, LTCS A350 LF787 Loose Plate With Weld On Plate Collar, Blank Flange
PRESSURE CLASS	PN 2.5 TO PN 400
BS 1560 BOSS	LTCS A350 LF787 Welding Neck Flange, Socket Welding Flange, LTCS A350 LF787 Slip-On Flange, LTCS A350 LF787 Blind Flange, LTCS A350 LF787 Screwed Boss Flange, LTCS A350 LF787 Lapped Flange
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
BS10	LTCS A350 LF787 Welding Neck Flange, LTCS A350 LF787 Plate Slip-On Flange, LTCS A350 LF787 Screwed Boss Flange, Slip-On Boss Flange, LTCS A350 LF787 Blind Flange
TABLE	D, E, F, H
DIN FLANGES	DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS	PN 6 TO PN 100

Low Temperature Carbon Steel LF787 Flange Dimensions

NPS	O.D. of Flange	Flanges Thickness	Diameter of RF	Diameter of Hub at Base	Lengtd Tdru Hub			Bore or Diameter		Dia. of Hub at Bevel	Radius of Fillet	Deptd of Socket
	O.D. of Flange	Flanges Thickness	Diameter of RF	Diameter of Hub at Base	Welding (WN) Neck	Slip-On (SORF) Threaded (NPT) Socket (SWRF)	Lap Joint (Loose)	Slip-on (SORF) Socket (SWRF)	Lap Joint (Loose)	Dia. of Hub at Bevel	Radius of Fillet	Deptd of Socket
	O	Q	R	X	Y	Y	Y	W	B	H	r	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.lf2	18.00	1/2	1-15/16
lf2	27-1/2	1-11/16	23	22	5-11/16	2-7/8	4-1/16	lf2.lf2	lf2.25	lf2.00	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

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Types of Low Temperature Carbon Steel LF787 Flanges

Carbon Steel LF787 Flange Weight Chart

Nominal Pipe Sizes (NPS)	Slip On (SORF)	Threaded (NPT)	Socket Weld (SWRF)	Lap Joint (Loose)	Blind (BLRF)	Weld Neck (WRNR)
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	lf2	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	2lf2	165
lf2	165	165	165	195	285	197
22	185	185	185	245	355	225
24	2lf2	2lf2	2lf2	275	430	268

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Uses of Low Temperature Carbon Steel LF787 Flanges

LF787 flanges are widely used in oil and gas, petrochemical, LNG, refrigeration, and other low-temperature industries. They are ideal for connecting pipes and equipment in cryogenic and sub-zero environments, ensuring durability, safety, and leak-free performance. The steel’s excellent toughness, ductility, and weldability make LF787 flanges suitable for high-pressure and critical piping systems. Esha Steel manufactures these flanges to precise standards, providing engineers and designers with dependable solutions for constructing efficient, high-performance pipelines. LF787 flanges help maintain operational integrity and long-term reliability even under the most challenging low-temperature conditions.