Low Temperature Carbon Steel LF787 Flanges

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Marzouk Steel, based in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of top-notch steel piping components for various industrial and infrastructure needs. The company is well-known for its precision in manufacturing, state-of-the-art production facilities, and unwavering commitment to both international and national quality standards. One of their standout products, the Low Temperature Carbon Steel LF787 Flanges, is specifically engineered to perform exceptionally well in extremely cold environments. With a strong emphasis on durability and customer satisfaction, Marzouk Steel ensures that these flanges provide safe, efficient, and long-lasting performance in oil and gas, petrochemical, power generation, and other industrial piping systems around the globe.

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LTCS LF787 Blind Flanges

Low Temperature Carbon Steel LF787 Forged Flanges

Carbon Steel LF787 Threaded Flanges

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What is Low Temperature Carbon Steel LF787 Flanges?

The Low Temperature Carbon Steel LF787 Flanges are crafted with a meticulously controlled chemical composition, which includes carbon, manganese, phosphorus, sulfur, and silicon, all aimed at enhancing strength and toughness. On the mechanical side, these flanges boast impressive tensile strength, dependable yield strength, and outstanding impact resistance even at sub-zero temperatures. Their unique blend of ductility, toughness, and weldability guarantees structural integrity, reduces the risk of brittle fractures, and ensures reliable performance under pressure and thermal stress in critical piping applications.

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Carbon Steel Flanges in Tunisia

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, %
Round Specimen in 4D, min, % Strip Specimen in 2 Inch [50mm], min, %
Class 2 65–85 [450–585] 55 [380] 20 28 45
Class 3 75–95 [515–655] 65 [450] 20 28 45

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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 Tunis, Tunisia

Marzouk Steel is one of the most prominent manufacturers and suppliers of superior quality Low Temperature Carbon Steel LF787 Flanges in Tunis, Tunisia. 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
Welding (WN) Neck Slip-On (SORF) Threaded (NPT) Socket (SWRF) Lap Joint (Loose) Slip-on (SORF) Socket (SWRF) Lap Joint (Loose)
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

Low Temperature Carbon Steel LF787 Spectacle Blind Flanges
Carbon Steel LF787 Long Weld Neck Flanges
Carbon Steel LF787 Lap Joint Flanges
LF787 Carbon Steel Socket weld Flanges
LF787 Carbon Steel Weld Neck Flanges
Carbon Steel LF787 Slip On 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

These LF787 Flanges are widely utilized in industries that demand safe and dependable operation in extreme cold conditions. You’ll often find them in oil and gas pipelines, refineries, petrochemical plants, and low-temperature processing units. They’re also a great fit for power generation facilities, offshore platforms, and industrial piping systems that handle pressurized liquids and gases. Thanks to their toughness, durability, and excellent sealing capabilities, these flanges provide secure connections, a long service life, and efficient operation in challenging low-temperature environments.

Industry We Serve

Food Industry

Oil and Gas Industry

petrochemical industry