Low Temperature Carbon Steel LF787 Flanges Manufacturer and Supplier in Riyadh, Saudi Arabia

Low Temperature Carbon Steel LF787 Flanges

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Yousef Steel, a well-respected steel manufacturer and supplier located in Riyadh, Saudi Arabia, proudly presents a specialized selection of **Low Temperature Carbon Steel LF787 flanges** designed for exceptional strength and performance in low-temperature settings. These flanges are crafted to comply with the rigorous standards of ASTM A350, making them perfect for cryogenic and sub-zero applications. You’ll find LF787 flanges utilized across various industries, including LNG, offshore oil and gas, petrochemicals, and refrigeration systems, where outstanding mechanical properties and low-temperature impact resistance are crucial. Yousef Steel is committed to delivering quality assurance, technical accuracy, and prompt service for all critical projects.

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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?

The ASTM A350 LF787 grade is a low-alloy, high-strength carbon steel that incorporates nickel, chromium, and molybdenum to enhance its resistance to impact, corrosion, and thermal stress. The typical chemical makeup features carbon (max 0.13%), manganese (0.60–1.35%), phosphorus (max 0.035%), sulfur (max 0.040%), nickel (2.03–2.57%), chromium (0.44–0.86%), and molybdenum (0.44–0.65%). These flanges undergo impact testing at temperatures as low as -73°C (-100°F), ensuring they maintain excellent fracture toughness and structural integrity even in extreme cold. With a minimum yield strength of 275 MPa and a tensile strength of 485 MPa, LF787 flanges are well-suited for high-pressure and thermal cycling environments.

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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 Riyadh, Saudi Arabia

Yousef Steel is one of the most prominent manufacturers and suppliers of superior quality Low Temperature Carbon Steel LF787 Flanges in Riyadh, Saudi Arabia. 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

Low Temperature Carbon Steel LF787 flanges find extensive use in cold climate infrastructure, liquefied gas transport lines, cryogenic process systems, and offshore platforms. They come in all major configurations, including weld neck, slip-on, blind, socket weld, and threaded types. These flanges ensure reliable, leak-tight connections capable of withstanding harsh environmental conditions and significant mechanical loads. Their enhanced alloy composition guarantees durability and performance where it matters most.