WELD-NECK FLANGES
Weld Neck Flanges ASME B16.5 Manufacturers, Exporters & Suppliers in India.304/304L Weld Neck Flanges (WNRF), 310/310S Weld Neck Flanges(WNRF), 316/316L Weld Neck Flanges(WNRF), 317/317L Weld Neck Flanges, 321/321H Weld Neck Flanges, 347/347H Weld Neck Flanges, 446 Weld Neck Flanges.Stainless Steel, Alloy Steel, Carbon Steel, Duplex steel, Copper Nickel Alloy, Hastelloy, Titanium, Alloy 20, Monel & Inconel Weld Neck Flanges.
Pentagon Steel India is a prominent manufacturer, supplier, and exporter of high-quality weld neck flanges in India, adhering to the ASME B16.5 standards. Our extensive product range includes a variety of materials such as 304/304L, 310/310S, 316/316L, 317/317L, 321/321H, 347/347H, and 446 stainless steel weld neck flanges. We also specialize in flanges made from alloy steel, carbon steel, duplex steel, copper-nickel alloy, Hastelloy, titanium, Alloy 20, Monel, and Inconel.
Weld neck flanges are essential components in piping systems, providing a strong and reliable connection that can withstand high pressure and temperature. Our flanges are designed for durability and performance, making them ideal for various industrial applications, including petrochemical, oil and gas, and power generation.
At Pentagon Steel India, we prioritize quality and customer satisfaction. Our state-of-the-art manufacturing facilities and rigorous quality control processes ensure that every flange meets the highest industry standards. We also offer customized solutions to meet specific project requirements, providing flexibility and efficiency to our clients.
As a leading exporter, we have built a strong reputation in international markets, delivering products on time while maintaining competitive pricing. Our dedicated team of professionals is committed to providing excellent service and technical support, making us a trusted partner for all your weld neck flange needs. Choose Pentagon Steel India for reliability, quality, and expertise in flange manufacturing.
We are a manufacturer and exporter of stainless steel flanges, alloy steel flanges, carbon steel flanges, duplex steel flanges, monel flanges, and Inconel flanges.
- Stainless Steel Flanges: As the name implies, these are constructed of stainless steel, a material commonly used to make flanges.
- Alloy Steel Flanges: These steels are alloyed with additional materials to increase their mechanical qualities.
- Carbon Steel Flanges: The higher carbon content provides
Flanges made of stainless steel, alloy steel, carbon steel, duplex steel, monel, and inconel.ASTM / ASME - A 182 / 240, SA 182 / 240 Flanges,
| Material of Construction | Standard | Grades |
| Stainless Steel Weld Neck Flanges | ASTM A182 , A240 | F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L |
| Carbon Steel Weld Neck Flanges | ASTM A105 | Gr. F42,46,52,56,60,65,70 |
| Alloy Steel Weld Neck Flanges | ASTM A182 | F1,F5,F9,F11,F22,F91 |
| Nickel Alloy Weld Neck Flanges | ASTM SB564, SB160, SB472, SB162 | Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), |
| Copper Alloys Weld Neck Flanges | ASTM SB 61 , SB62 , SB151 , SB152 | UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, |
| Low Temperature Carbon Steel Weld Neck Flanges | ASTM A350 | LF2 , LF3 |
| Duplex Steel Weld Neck Flanges | ASTM A182, A240 | UNS F 44, F 45, F51, F 53, F 55, F 60, F 61 |
| Outside Diameter ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm | Inside Diameter ≤ 10 = ± 0.8 mm | 12 thru 18 = 1.6 mm | ≥ 20 = + 3.2 mm / - 1.6 mm |
| Diameter of Contact Face 1.6 mm Raised Face = ± 0.8 mm 6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm | Diameter of Hub at Base ≤ 24 = 1.6 mm | > 24 = ± 3.2 mm |
| Diameter of Hub at Point of Welding ≤ 5 = + 2.4 mm / - 0.8 mm | ≥ 6 = + 4.0 mm / - 0.8 mm | Drilling Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm Eccentricity of Bolt Circle with Respect to Facing ≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max |
| Thickness ≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0 | Length thru Hub ≤ 10 = 1.6 mm | ≥ 12 = ± 3.2 mm |