WELDO / NIPO Flanges Supplier

When it comes to selecting the best types of flanges for your industrial projects, you have many options. However, not all flanges are created equal.

Weldo and Nipo flanges are the most popular and commonly used in the oil, gas, petrochemical, and chemical industries. But what is the difference between the two?

What are Weldo Flanges

Weldo flanges are fully welded flange that is used to connect pipes that are made of dissimilar materials together. They are designed to position the flange face perpendicular to the pipe axis, making it ideal for critical and high-pressure applications.

Weldo / Nipo Flanges Supplier, Weldo / Nipo Flanges Manufacturer, Weldo / Nipo Flanges Supplier in Mumbai, Weldo / Nipo Flanges Manufacturer in India.

Weldo Flanges are typically easy to install, and maintenance is minimal, making them ideal for industries such as oil and gas, petrochemicals, and pharmaceuticals. 

In addition, Weldo flanges have excellent resistance to corrosion and high-temperature applications, making them suitable for various industrial applications.

What are Nipo Flanges?

Nipo flanges, on the other hand, are a combination of a Weldo and an NPT thread. The four different solder joint arrangements permit easy installation and high integrity. These flanges are extensively used in areas that require extension or modification of an existing pipe system. Nipo Flanges are commonly used in hostile and corrosive applications such as chemical and petrochemical plants.

Weldo and Nipo flanges have specific applications for which they are best suited. Weldo flanges are typically suitable for high-pressure pipelines, high-pressure pipelines with high-temperature applications, and corrosive materials. We offer various kinds of Flanges like Big Diameter Flanges, Large Diameter Flanges etc. 

In addition, Weldo flanges are also ideal for connecting pipes made of dissimilar materials, making them ideal for the petrochemical and oil and gas industries. Nipo flanges, on the other hand, are typically used when it is necessary to convert a flange connection into a threaded connection, simplifying the installation process.

Weldo Nipo Flanges

The type of flange you choose will depend on several factors, such as pressure, temperature, fluid, and piping materials. Selecting the right flange type is important to avoid any potential accidents or failures in your industrial project. When selecting a flange, consider the materials, the application area, the pressure transportation, and the pipeline’s diameter. Consult an expert if you are still determining what type of flange suits your industrial project. At universalmetalcorporation There are Different types of Products available like Spacer Blinds Flanges, Slip-On Flanges, etc.

Weldo and Nipo flanges are important components in different industrial projects. They come with unique features, applications, and usage. Selecting the right flange type that matches your specific needs and the industrial application is essential.

If you need more clarification, seek advice from a specialist. Kerkau Manufacturing offers various flanges designed to suit different industrial applications and needs. Contact us today to learn more about how we can provide you with the best flanges for your project.

What is the difference between Weldo Flange/Nipo Flange?

Weldo flanges have a long neck for welding to pipes, providing high-strength connections. Nipo flanges combine a weld neck and branch outlet for branching connections in pipelines.

What materials are Weldo Flanges and Nipo Flanges typically made from?

Weldo Flanges and Nipo Flanges are commonly manufactured from materials such as carbon steel, stainless steel, alloy steel, and other corrosion-resistant materials. The choice of material depends on factors like the application, pressure, and temperature requirements.

Are Weldo Flanges suitable for high-pressure applications?

Yes, Weldo Flanges are suitable for high-pressure applications. Their design allows for a strong and reliable connection between pipes, making them ideal for systems that operate at elevated pressures.

Can Nipo Flanges be used with various pipe sizes and types?

Yes, Nipo Flanges are versatile and can be used with various pipe sizes and types, including carbon steel, stainless steel, and alloy pipes. They come in a range of sizes and configurations to accommodate different branch connections and pipe diameters.

Specification of WELDO / NIPO Flanges

  • Size : 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
  • Dimensions : 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 SP44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
  • Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
  • DIN : DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638, DIN 2673
  • BS : BS 4504, BS 4504, BS 1560, BS 10
  • Pressure : PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160
  • JIS : JIS B2220, JIS B2221, 5K, 10K, 16K, 20K, 30K, 40K, 63K
  • Connect Type/ Flange Face Type : Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Small Male-Female (SMF)

WELDO / NIPO Flanges Material & Grades

Stainless Steel WELDO / NIPO Flanges :
ASTM A182, F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L, SMO 254

Duplex & Super Duplex Steel WELDO / NIPO Flanges :
ASTM / ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61 / Duplex 2205 – UNS S31803, UNS S32205 / Super Duplex 2507 – UNS S32750, UNS S32760

Hastelloy WELDO / NIPO Flanges :
ASTM B/SB564, Hastelloy B2 – UNS No. N10665, Hastelloy B3 – UNS No. N010675, Hastelloy C4 – UNS No. N06455, Hastelloy C22 – UNS No. N06022, Hastelloy C276 – UNS No. N10276, Hastelloy C2000 – UNS No. N06200, Hastelloy X – UNS No. N06002

Inconel WELDO / NIPO Flanges : ASTM B564, Inconel 600 – UNS No. N06600, Inconel 601 – UNS No. N06601, Inconel 625 -UNS No. N06625, Inconel 715, Inconel 718 – UNS No. N07718, Incoloy 800 / 800H /800HT – (UNS No. N08800 / N08810 / N08811), Incoloy 825 – UNS No. N08825, Incoloy 925 – UNS No. N09925

Monel WELDO / NIPO Flanges :
ASME SB 564, Monel 400 – UNS No. N04400, Monel K500 – UNS No. N05500

Nickel WELDO / NIPO Flanges : Nickel 200 – UNS No. N02200 , Nickel 201 – UNS No. N02201

Titanium WELDO / NIPO Flanges :
ASTM B381 / ASME SB381, Grade 2 – UNS No. R50400, Grade 5 – UNS No. R56400

Alloy 20 WELDO / NIPO Flanges :
ASTM B462 / ASME SB462, Grade 2 – UNS No. N08020


  • ANSI B16.5 WELDO / NIPO Flanges
  • ASME B16.5 WELDO / NIPO Flanges
  • ANSI B16.47 WELDO / NIPO Flanges
  • ASME B16.47 WELDO / NIPO Flanges
  • ANSI B16.47 Series A WELDO / NIPO Flanges
  • ANSI B16.47 Series B WELDO / NIPO Flanges
  • API standard WELDO / NIPO Flange


  • DIN2573, DIN2576 WELDO / NIPO Flanges
  • DIN2527 WELDO / NIPO Flanges
  • DIN2573, DIN2576 WELDO / NIPO Flange
  • EN1092-1 F304/F304L WELDO / NIPO Flange
  • DIN2634 WELDO / NIPO Flanges
  • DIN2633 WELDO / NIPO Flanges EN1092-1 steel WELDO / NIPO Flanges
  • EN1092-1 TYPE05 WELDO / NIPO Flanges
  • EN1092-1 TYPE 11B WELDO / NIPO Flanges
  • EN1092-1 type11B PN10 DN400 WELDO / NIPO Flange


  • BS4504 code 105 WELDO / NIPO Flanges
  • BS4504 code 101 WELDO / NIPO Flanges
  • BS4504 code 111 WELDO / NIPO Flanges


  • JIS B2220 WELDO / NIPO Flange
  • JIS B2220 5K WELDO / NIPO Flange
  • JIS JIS B2220 10K WELDO / NIPO Flanges
  • JIS B2220 16K WELDO / NIPO Flanges
  • JIS B2220 20K WELDO / NIPO Flanges
  • JIS B2291 WELDO / NIPO Flanges

Flange Standard

  • API 6A WELDO / NIPO Flange
  • ANSI  WELDO / NIPO Flange
  • ASME WELDO / NIPO Flange
  • DIN WELDO / NIPO Flange
  • EN1092-1 WELDO / NIPO Flange
  • UNI WELDO / NIPO Flange
  • JIS/KS WELDO / NIPO Flange
  • BS4504 WELDO / NIPO Flange
  • GB WELDO / NIPO Flange
  • AWWA C207 WELDO / NIPO Flange
  • GOST WELDO / NIPO Flange
  • PSI WELDO / NIPO Flange

Contact us to get a quick quote for your requirement.

We offer These WELDO / NIPO Flanges as per ASTM, ASME and API.

Other types of WELDO / NIPO Flanges Stock

  • 600 Inconel EN 1092-2 PN16 Weldo / Nipo Flange
  • Stainless Steel 316 Nipo Flanges
  • Duplex 2205 BS4504 PN16 NipoFlange
  • Stainless Steel 304 Industrial Weldo Flanges
  • Incoloy 825 Weldoflange
  • Inconel 625 Class 300 Nipoflange
  • UNS S31803 Duplex Steel Class 150 Weldo / Nipo Flange
  • Duplex S32205 Raised Faced Weldo Flanges
  • SS 304L AWWA C207 Class E Nipo Flanges
  • Super Duplex Steel S32760 Nipo Flanges
  • UNS S32750 Weldo Raised Faced Flanges
  • Monel 400 Weldo Flange 600#
  • 316L Stainless Steel Weldo / Nipo Flanges
  • Incoloy 800 Class 150 Nipo Flanges
  • ASTM A182 F317 Stainless Steel Nipo Flange
  • ANSI B16.5 Stainless Steel 904L Weldo Flange
  • Titanium Grade 2 JIS B2220 WeldoFlanges
  • Stainless Steel NipoFlange Dimensions PN16
  • Hastelloy C276 JIS 5K Nipo Flanges
  • ASME B16.47 Stainless Steel Weldo / Nipo Flanges
  • 321H Stainless Steel Nipo Flanges
  • Stainless Steel 446 Nipo Flange
  • Titanium Gr 5 BS4504 PN16 Weldo / Nipo Flanges
  • ASTM A182 F347 SS BS 10 Table E Weldo / Nipo Flange

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Exporter of WELDO / NIPO Flange in the following Destinations


  • Saudi Arabia
  • Iran
  • Iraq
  • UAE
  • Qatar
  • Bahrain
  • Oman
  • Kuwait
  • Turkey
  • Yemen
  • Syria
  • Jordan
  • Cyprus
  • Nigeria
  • Algeria
  • Angola
  • South Africa
  • Libya
  • Egypt
  • Sudan
  • Equatorial Guinea
  • The Republic Of Congo
  • Gabon

  • USA
  • Canada
  • Mexico
  • Panama
  • Costa Rica
  • Puerto Rica
  • Trinidad And Tobago
  • Jamaica
  • Bahamas
  • Denmark
  • Russia
  • Norway
  • Germany
  • France
  • Italy
  • UK
  • Spain
  • Ukraine
  • Netherland
  • Belgium
  • Greece
  • Czech Republic
  • Portugal
  • Hungary
  • Albania
  • Austria
  • Switzerland
  • Slovakia
  • Finland
  • Ireland
  • Croatia
  • Slovenia
  • Malta
  • India
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Sri Lanka
  • Maldives
  • Bangladesh
  • Mayanmar
  • Taiwan
  • Cambodia

  • Argentina
  • Bolivia
  • Brazil
  • Chile
  • Venezuela
  • Colombia
  • Ecuador
  • Guyana
  • Paraguay
  • Uruguay


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New Delhi Ahmedabad Jaipur Surat Salem Gandhinagar
Bhiwandi Tiruppur Sivakasi Jamnagar Thiruvananthapuram Rajahmundry
Bhubaneswar Vijaywada Firozabad Bokaro Steel City Rajkot Bharuch
Panna Raipur Cochin Ludhiana Panipat Durgapur
Peenya Pimpri-Chinchwad Channapatna Kharagpur Nashik Bareilly
Varanasi Haldia Rourkela Bangalore Moradabad Indore
Visakhapatnam Trivandrum Pithampur Dibrugarh Angul Gwalior
Coimbatore Kannur Nagpur Vadodara Rudrapur Noida
Agra Bhagalpur Jamshedpur Bhilai Lucknow kanpur
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