HydroFlange is most trusted and famous manufacturer and supplier of Socket Weld Flange with an ISO 9001:2008 and PED Certifications.
When working with huge pressure pipes having a small size, we need Socket Weld Flange. Although they are similar to Slip-on flange, Socket Weld Flange consist of an internal recess inside its diameter which ensures smooth flow. Moreover, the major advantage of Socket Weld flange is that with proper welding and grinding, it makes smooth bore. However, Socket welds are sold at high cost as they have intricate machining. Then, Socket Weld Pipe Flange was made with an intention for usage in high-pressure areas at small pipes.Hydro Flange has the best warehouse facilities which have a huge stock of Socket Weld Flange ready to ship and are available in all dimensional inches. On the other hand, we also furnish flanges with 1/16’’ raised face when specified by customers. Other flat face options are also available and furnishing of standard Bore is also done. As matter of fact, we also offer Socket Weld Flange in various materials such as alloy, stainless steel, carbon steel and more.Another output that Hydro manufactures is Socket Weld Insert Flange. This kind of flanges allows you to rotate outer flange easily as they come in a two-piece. Hence, giving you easy bolt hole alignments. We also make one piece socket weld insert flange if asked for. Accurately, the two-piece Socket Weld Pipe flange has a dimension of DN15 – DN2000 (1/2″ – 80″). Socket Weld Flange have a fatigue strength of twice the double-welded slip on the flange. Of course, remember to create a space between flange and pipe before welding. This will help reduce stress at the weld root.

Socket Weld Flange

Socket Weld Flange

Socket weld flange
Socket weld flange
Types of Socket Weld Flange by Class, Size and Wall Thickness

Class Designation- 3000 Lbs, 6000 Lbs, 9000 Lbs.

  • Elbows 45 degrees, Elbow 90 degree, Tees, Crosses, Couplings, Half-Couplings, End or Pipe Caps all ranging from ½ – 4 to ½ – 2 to ½ – 2.
  • Pipe Size (by Wall Thickness)- SCH 80 & XS, SCH 160, XXS
  • Plugs and Bushings are used up through Class 6000 NPS


Flange Type Standard Designations
  • Stainless Steel Flanges- ASTM A182 F304 / 304L / 304H / 316/ 316L / 321 / 310 / 347 etc.
  • Carbon Steel Flanges- ASTM A105 / A694 F42/ 46/ 52/56/ 60/ 65 / 70 / A350 LF3 / A350 LF2, etc.
  • Alloy Steel Flanges- ASTM A182 F1 / F5 / F9 / F11 / F22 / F91 etc.
  • Nickel Alloy Flanges- ASTM B 366, etc.

To attach this Socket Weld Flange, firstly insert the pipe inside the Socket End and at the top side spread the fillet weld. Further, this gives a smooth flow inside the pipe. Hydro Flanges is the manufacturer and supplier of Socket Weld Flange which is available in various sizes, material grades, and specifications. Above all, our company also produces Slip On Flanges with a hub which has specified range starting from 1/2’’ thru 24’’. In fact, they are supplied with a flat face, raised face with 1/16’’ or RTJ facing, our Socket Weld Pipe Flanges are feasible in carbon, steel, stainless steel and alloy Socket Weld Pipe Flanges.

Hydro works with an aim to produce the best Socket Weld Flange in the world. We also give specific training to our employees to turn them into professional skilled ones. Moreover, we see to it that environment is not disturb, hence we use a sustainable manner of processing and development.


  1. No beveling of the pipe is necessary before welding.
  2. Any temporary tack welding is not necessary for alignment as the flange ensures perfect alignment.
  3. The bore of the pipe doesn’t let weld metal penetrate into itself.
  4. Chances of the leak are less if replaced to thread fittings.
  5. Prevents radiography using its fillet.
  6. Budget friendly construction expenses as they fit exactly hence no special tools and installments.


  1. The necessity of expansion gap of 1/16 inch between the socket shoulder and the pipe.
  2. The presence of crevices and gap can lead to corrosion.
  3. Not applicable for Ultra High Hydrostatic Pressure as they don’t allow complete penetrate.

The packing of socket weld flange is according to international standards, i.e., in strapped bundles with strips, followed by transferring into containers to avoid damage. Our delivery days may take 10-25 days (depends on the stock and area of shipment). Additional packing is in hexagonal bundles, wooden boxes, steel or wooden crates and also per customers demand. Moreover, plastic covering is given to each bundle to avoid weather damage. Also, Plastic caps are given at the ends of Socket Weld Pipe Fittings. Next, our items have marks which act as unique identifiers. Our regular shipment countries include Italy, UAE, Bahrain, Indonesia, Australia, Kuwait, Saudi Arabia, South Africa, Germany, UK, Denmark, Canada, USA, Peru, Brazil, Nigeria, Mexico, Venezuela (Latin America), South America, Russia, Kazakhstan etc.

  • All our flanges are in accordance with ANSI B 16.5 from 1/2″ to 24″ and classes 150 to 2500.
  • Flanges in accordance with MSS SP 44 standard ranging from 26″ to 48″ and classes 150 to 900 lbs are also available.
  • Flanges with long welding neck of sizes from 1/2″ to 24″ and are from classes 150 to 2500 lbs.
  • Orifice flanges are in accordance with ANSI B16.36 from 1″ to 24″ and from 300 to 2500 lbs.
  • Blind flanges are from 6 Bar to 40 Bar in accordance with DIN and so are slip on and welding neck flanges.
  • Flanges in accordance with BS10 Table D & Table E, BS Table F & Table H, and BS Table J & Table K are in from 1/2″ to 24″ and up to 450 lbs.
  • Flanges from 2kg to 210 kg are in accordance with JIS.