Harsh Flanges is a reliable manufacturer and supplier of top-notch Weldo Flanges and Nipo Flanges, proudly based in Mumbai, India. With years of experience under our belt and a strong focus on precision engineering, we provide flanges that adhere to global standards for both performance and durability. Our Weldo and Nipo flanges are specifically crafted to ensure secure, leak-proof piping connections, particularly in high-pressure and high-temperature settings. Supported by state-of-the-art manufacturing facilities and rigorous quality control, Harsh Flanges is dedicated to delivering dependable flange solutions tailored to the needs of various industries, including oil and gas, petrochemical, power, and marine engineering.
Typically, Weldo Flanges and Nipo Flanges are made from materials like carbon steel, stainless steel, alloy steel, and duplex materials. Common grades include ASTM A105, A182 F304/F316, and A350 LF2. These flanges boast impressive mechanical properties, with tensile strength ranging from 485 to 620 MPa and yield strength between 250 and 450 MPa. They also offer good elongation (at least 20%) and impact resistance, making them ideal for tough conditions. Their integrated design allows for direct welding to the pipe, enhancing structural integrity and reducing stress concentration in high-performance systems.
| Size | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
|---|---|
| Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Pressure Rating ANSI | Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Weldo Face (FF) |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Material | Alloy 20 Weldo Flange, Brass Nipo Flange, Copper Nickel Weldo Flange, Stainless Steel Weldo Flange, AISI 4130 Weldo Flange, Inconel Weldo Flange, Titanium Weldo Flange, Monel Weldo Flange, Super Duplex Nipo Flange, Duplex Steel Nipo Flange, Incoloy Nipo Flange, Hastelloy Weldo Flange, SMO 254 Weldo Flange, Nickel Alloy Nipo Flange. |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Harsh Flanges, a leading supplier in Mumbai, India, offers an extensive selection of Weldo Flange / Nipo Flange, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
Weldo Flanges and Nipo Flanges find extensive use in industries such as oil and gas, chemical processing, petrochemicals, power generation, offshore drilling, and shipbuilding. Weldo flanges are perfect for providing a 90-degree branch connection and are essential for high-pressure pipelines where a robust weld joint is crucial. Nipo flanges, which combine the features of a nipple and a flange, allow for direct pipe connections without needing extra fittings. Both types are designed for compact piping systems where space and strength are vital, ensuring leak-proof, efficient, and long-lasting connections in demanding applications.
| NPS | A | B | C | D |
| 1/2 | 3/4 19.05 | 1.3/8 34.93 | 15/16 23.81 | 5/8 15.88 |
| 3/4 | 7/8 22.23 | 1.5/8 41.28 | 1.3/16 30.16 | 13/16 20.64 |
| 1 | 1.1/16 26.99 | 2 50.80 | 1.7/16 36.51 | 1.1/32 26.19 |
| 1.1/4 | 1.1/4 31.75 | 2.3/8 60.3 | 1.3/4 44.45 | 1.3/8 34.93 |
| 1.1/2 | 1.5/16 33.34 | 2.7/8 73 | 2 50.80 | 1.5/8 41.28 |
| 2 | 1.1/2 38.10 | 3.1/2 88.90 | 2.9/16 65.09 | 2.1/16 52.39 |
| 2.1/2 | 1.5/8 41.28 | 4.1/16 103.19 | 3 76.20 | 2.7/16 61.91 |
| 3 | 1.3/4 44.45 | 4.13/16 122.24 | 3.11/16 93.66 | 3.1/16 77.79 |
| 3.1/2 | 2 50.80 | 5.3/8 136.53 | 3.7/8 98.43 | 3.9/16 90.49 |
| 4 | 2 50.80 | 6 152.40 | 4.3/4 120.65 | 4 101.60 |
| 5 | 2.1/4 57.15 | 7.1/8 180.98 | 5.9/16 141.29 | 5.1/16 128.59 |
| 6 | 2.3/8 60.3 | 8.1/2 215.90 | 6.11/16 169.86 | 6.1/16 153.99 |
| 8 | 2.3/4 69.85 | 10.3/8 263.53 | 8.11/16 220.66 | 7.15/16 201.61 |
| 10 | 3.1/16 77.79 | 12.9/16 319.09 | 10.13/16 274.64 | 10 254.00 |
| 12 | 3.3/8 85.73 | 14.7/8 377.83 | 12.13/16 325.44 | 12 304.80 |
| 14 | 3.1/2 88.90 | 16.1/8 409.58 | 14.1/16 357.19 | 13.1/4 336.55 |
| 16 | 3.11/16 93.66 | 18.1/4 463.55 | 16.1/16 407.99 | 15.1/4 387.35 |
| 18 | 4.1/16 103.19 | 20.3/4 527.05 | 18.5/8 473.08 | 17.1/4 438.15 |
| 20 | 4.5/8 117.48 | 23.1/16 585.79 | 20.1/16 509.59 | 19.1/4 488.95 |
| 24 | 5.3/8 136.53 | 27.7/8 708.03 | 25.1/8 638.18 | 23.1/4 590.55 |
| NPS | A | B | C | D |
| RATING | NOMINAL PIPE SIZE FROM 3/4″ TO 36″ | |||||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 0,9 | |||
| 150# | XS | 13,8 | 17,6 | 88,9 | 11,2 | 0,9 |
| 160 | 11,7 | 11,7 | 0,9 | |||
| XXS | 6,4 | 6,4 | 0,9 | |||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 1,2 | |||
| 300# | XS | 13,8 | 17,6 | 95,3 | 14,3 | 1,2 |
| 160 | 11,7 | 11,7 | 1,2 | |||
| XXS | 6,4 | 6,4 | 1,2 | |||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 1,3 | |||
| 600# | XS | 13,8 | 17,6 | 95,3 | 14,3 | 1,3 |
| 160 | 11,7 | 11,7 | 1,3 | |||
| XXS | 6,4 | 6,4 | 1,3 | |||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 2,4 | |||
| 900# | XS | 13,8 | 17,6 | 120,6 | 22,4 | 2,4 |
| 160 | 11,7 | 11,7 | 2,4 | |||
| XXS | 6,4 | 6,4 | 2,4 | |||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 2,4 | |||
| 1500# | XS | 13,8 | 17,6 | 120,6 | 22,4 | 2,4 |
| 160 | 11,7 | 11,7 | 2,4 | |||
| XXS | 6,4 | 6,4 | 2,4 | |||
| Bore schedule | B | C | D | E | Weight [kg] | |
| STD | 15,8 | 18,5 | 3,6 | |||
| 2500# | XS | 13,8 | 17,6 | 133,4 | 30,2 | 3,6 |
| 160 | 11,7 | 11,7 | 3,6 | |||
| XXS | 6,4 | 6,4 | 3,6 | |||
Yes, we offer custom sizes for Weldo Flange / Nipo Flange to meet specific project needs. Our team at Harsh Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@harshflanges.co.in.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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