Aatir Steel is a top-notch manufacturer and supplier located in Cairo, Egypt, focusing on high-quality **Low Temperature Carbon Steel LF787 Flanges**. Known for its precision engineering and outstanding manufacturing standards, the company crafts flanges that excel in low-temperature and cryogenic settings. LF787 Flanges are built to deliver remarkable toughness, strength, and durability, all while ensuring precise dimensions and dependable weldability. Aatir Steel caters to various industries, including oil and gas, petrochemical, power generation, and industrial piping, providing reliable flange solutions for pipelines, pressure vessels, and equipment where resistance to brittle fracture, safety, and long-lasting performance in extreme cold are essential.
**Low Temperature Carbon Steel LF787 Flanges** mainly consist of carbon, manganese, and small amounts of phosphorus and sulfur. This unique blend guarantees excellent low-temperature toughness, good weldability, and reliable tensile and yield strength. On a mechanical level, LF787 Flanges showcase impressive impact resistance, ductility, and structural integrity, even in sub-zero conditions. Their metallurgical structure ensures stability, toughness, and consistent performance, making LF787 Flanges perfect for low-temperature piping systems and pressure applications that demand mechanical reliability.
| 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 |
| 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 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aatir Steel is one of the most prominent manufacturers and suppliers of superior quality Low Temperature Carbon Steel LF787 Flanges in Cairo, Egypt. 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.
| 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 |
| 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 |
| 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 |
**Low Temperature Carbon Steel LF787 Flanges** are extensively utilized in industries that need steel components to function effectively in extreme cold. They are particularly suited for cryogenic pipelines, LNG processing units, refrigeration systems, chemical processing equipment, and oil and gas infrastructure. These flanges offer excellent toughness, weldability, and load-bearing capacity, ensuring safe and reliable operation under low temperatures and high pressures. Their blend of durability, impact resistance, and dimensional stability makes them ideal for critical piping systems, industrial equipment, and pressure vessels.
Aatir Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cairo, Egypt.
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