Shawn Flanges is a well-respected manufacturer and supplier located in Houston, USA, focusing on high-quality Weldo Flanges and Nipo Flanges for a wide array of industrial piping systems. Renowned for our precision engineering and rigorous quality control, Shawn Flanges ensures that our products meet international standards like ASME, ANSI, and API. We craft our Weldo and Nipo Flanges from top-notch materials, including carbon steel, stainless steel, and alloy steel, to guarantee outstanding performance even under high pressure and temperature. With quick delivery, competitive pricing, and customized solutions, Shawn Flanges has become a reliable partner for clients in the petrochemical, power, oil & gas, and marine sectors.
Typically, Weldo and Nipo Flanges are made from materials such as ASTM A105 carbon steel, ASTM A182 stainless steel (Grades F304/F316), and various alloy steels. These flanges boast impressive tensile strength (415–690 MPa), high yield strength (250 MPa and above), and remarkable toughness. Their composition includes elements like carbon, manganese, chromium, nickel, and molybdenum, which enhance their corrosion resistance, weldability, and ability to withstand pressure. While the mechanical properties can vary by grade, they are specifically designed to endure high temperatures and pressures, making them perfect for demanding pipeline and process connections.
| 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 | |
Shawn Flanges, a leading supplier in Houston, USA, 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 play a crucial role in high-pressure piping systems where branch connections or extensions are needed without welding directly to the main pipe. Weldo Flanges are used for butt-welded pipe connections, while Nipo Flanges are perfect for threaded or socket-weld applications. These flanges are commonly found in refineries, petrochemical plants, offshore platforms, power generation stations, and water treatment facilities. Their robust mechanical integrity, corrosion resistance, and versatility across various pressure classes make them ideal for transporting steam, oil, gas, chemicals, and other essential media under challenging service conditions.
| 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 Shawn Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@shawnflanges.us.
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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