Where to get high quality Weldoflange or Nipoflange

What is a Flanged outlet?

Flanged outlet is special type of flanges manufactured by combining standard flange with branch connections (such as nipoletweldolet, elbolet, latrolet, and other “olet”). Nipoflanges and weldoflanges, the two most common flanges outlets (or “flange olets”), are used to branch pipelines at 90 degrees. This type of forged fittings are not available from stock; when required, they need to made to order (expect long delivery times for all flange outlets). Flanged outlets are manufactured from NPS 1/2″  to 12″ and rating from 150# to 2500#, RF or RTJ. The available schedules are 10S, STD, XS, 160 and XXS and can be installed on run pipes from NPS 3/4″ up to 36″.

What are Nipoflanges?

Nipoflange1 - Where to get high quality Weldoflange or Nipoflange

Nipoflanges are used for branch pipelines at 90 degrees. They are a combination of a weld neck flange and a nipolet. Nipo-flanges are forged products manufactured out of one solid piece of steel and not different products welded together. The nipolet of the nipoflange is welded onto the run-pipe and creates a 90 degrees branch; on the other side of the nipoflange, the flange end connects to the branched pipe or to other devices (example a valve, a pump or a compressor). Nipoflanges are available in different materials, such as carbon steel ASTM A105 (high-temperature service), ASTM A350 (low-temperature carbon steel), ASTM A182 (stainless steel grades, including duplex and super duplex) and nickel alloys (Inconel, Incoloy, Hastelloy, etc). Nipoflanges are available in the reinforced type as well, which has additional mechanical strength compared to the standard type.

Dimensions of countered body nipoflanges (½” to 2″) – flanged outlets:

nipoflange measure - Where to get high quality Weldoflange or Nipoflange

What are Weldoflanges?

Weldoflanges are similar to nipoflanges, as that they are a combination between a weld neck flange and a branch connection (a weldolet in this case). Weldoflanges are made out of a single piece of solid forged steel, not by welding separate parts together.

Dimensions of countered body weldoflanges (½”-2″) – flanged outlets:

dimension of weldoflanges measures - Where to get high quality Weldoflange or Nipoflange

Carbon Steel / Stainless Steel Weldoflange and Nipoflange Forged Flanges Production Range
Size: 1/2″ (15 NB) to 48″ (1200NB)
Standards: ANSI B16.5 Flanges, ANSI B16.47 Series A & B, DIN Flange, JIS B2220 flange, MSS SP44 Flange, EN1092-1 FLANGES, ASA, API 605, AWWA C207 Flange.
Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500. PN6, PN10, PN16, PN25, PN40, PN64 etc.
Carbon Steel Weldoflange / Nipoflanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2.
ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70.  ASTM A516 60, 65, 70, Steel RST37.2, C22.8
Stainless Steel Weldoflange / Nipoflanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Alloy Steel Weldoflange / Nipoflanges: ASTM A182 F1, F5, F9, F11, F22, F91.
Nickel Alloy Weldoflange / Nipoflanges: Duplex, Super Duplex, Hastelloy, Monel, Inconel, Titanium.
Flange Face Type: Flate Face (FF), Raised Face (RF), Groove and Tongue, Ring Type Joint (RTJ)
Coating/Surface Treatment: Oil Black Paint, Anti-rust Paint, Yellow Transparent, Cold and Hot Dip Galvanized, Zinc Plated.
Value Added Services: Customised Flanges & CNC Machining.

Two different pipe branch connections

On the run pipe side a nipoflange is designed like a weldolet. That means the branch connection on the run pipe side is a welding connection. On the other side there it has a flange connection. The flange connection can be designed according to customers requirements (acc. To DIN or ANSI).

Standard and special materials

The Weldoflange and Nipoflange is a combination of a Welding Neck flange and a supposedly Weldolet or Nipolet. The 2 components are manufactured in one piece, and not welded. These flanges are primarily in Branch connections. Furthermore, they have an expanded range of special flanges, fittings and branch connections.

nipo flanges draw - Where to get high quality Weldoflange or Nipoflange

Size: 1/2″ NB TO 24″ NB.
Class : 150#, 300#, 400 #, 600#, 900#, 1500# & 2500#
Flanges available with NACE MR 01-75

ansi nipoflange - Where to get high quality Weldoflange or Nipoflange

Source: China Flanged Outlet Manufacturer – Yaang Pipe Industry (www.metallicsteel.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@metallicsteel.com

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References:

  • https://www.yaang.com
  • http://www.wermac.org/flanges/flanges_special_long-welding-neck_weldo-nipo_expander_reducing.html
  • https://www.pipingonline.com/flanges/nipoflange-weldoflange-flange-outlets

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