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Weld Neck Raised Face Flanges (WNRF)

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Weld neck flanges

The raised face weld neck flanges ( RFWN) are one of the most often used kinds of flanges in the piping sector. Bottom-entry valves are simple to identify because of the straight hub that is identical to the wall thickness (bore) of the pipe. Machining is the process in which flange bore is made to be identical to the ID of the pipe or fitting. This means that there is no transition that accrues from the weld neck flange to the piping and no turbulence appears during the welding neck.

What is a Raised Face Flange, after all?

Raised face is the most common type of seal gasket profile. Here the gasket contact surface is higher than the surface of flanged face. This is the one used creation for weld neck flanges more than the others seals. Consequently, the height of the face is getting varied because of the shapes or diameters of the flanges. Oh, the skull face is on the hub side instead of the opposite of it.

We create weld neck flanges to supply contingency reinforcement for high-stress purposes. The tube flange also supplies the column strength; this together with the tapered neck region helps stress to be distributed very well. It bears low cycle of fatigue during line expansion or anything else that may lead to variable forces.

Grades in Weld Neck Flanges

⇒ Stainless Steel F304 weld neck Flanges

⇒ Stainless Steel 304L weld neck Flanges

⇒ Stainless Steel 304H weld neck Flanges

⇒ Stainless Steel Type 316 weld neck Flanges

⇒ Stainless Steel 316L weld neck Flanges

⇒ Stainless Steel 317 weld neck Flanges

⇒ Stainless Steel 317L weld neck Flanges

⇒ Stainless Steel 321 weld neck Gaskets

⇒ Stainless Steel 310 weld neck Flanges

⇒347 Stainless Steel weld neck Flanges

⇒ Type 904 Stainless Steel weld neck Flanges

⇒ Carbon Steel A105 weld neck Flanges

⇒ Carbon Steel A694 weld neck Flanges

⇒ Carbon Steel F42 weld neck Flanges

⇒ Carbon Steel Grade 46 Flanges

⇒ 52 Carbon Steel weld neck Flanges

⇒ Carbon Steel 56 weld neck flanges

⇒ Carbon steel 60 weld neck Flanges

⇒ Carbon Steel 65 weld neck Flanges

⇒ Carbon Steel 70 weld neck Flanges

⇒ ASTM A516 Grade 60/70 weld neck Flanges

⇒ F1 Alloy Steel weld neck Flanges

⇒ Alloy Steel FS weld neck Flanges

⇒ F9 Alloy Steel F11 weld neck Flanges

⇒ Alloy steel F22 weld neck flanges

⇒ F91 Alloy Steel weld neck Flanges

⇒ Monel 400 weld neck Flanges

⇒ Monel K500 weld neck Flanges

⇒ Inconel Alloy 600 weld neck Flanges

⇒ Inconel Alloy 601 weld neck Flanges

⇒ Inconel Alloy 625 weld neck Flanges

⇒ Inconel Alloy 718 weld neck Flanges

⇒ Inconel alloy 725 weld neck flanges.

⇒ Hastelloy C22 weld neck Flanges

⇒ Hastelloy C276 weld neck Flanges

⇒ Hastelloy 82 weld neck Flanges

⇒ The nickel alloy UNS 2201 weld neck flanges

⇒ Nickel Alloy UNS 2200: 2 weld neck flanges

Quality Control

Quality, as a major factor of our ISO certification, is a vital component of our business. We make it a standard inclusion of our inspection to ensure the work’s quality.

  • Marking
  • Surface
  • Dimension

As Tack DN25 Class 600 ASTM A182 F304 Weld Neck Flange RF is just one such application.

The symbol should be clearly cut, neat and beautiful, “DN25 600# Weld Neck RF SS304 B16.5 831” for example.

Making hand marks and visual touching the object to make sure it is flat and uniform.

Dimension chart give the value which needs to be measured such as outside diameter, thickness raised face diameter and other dimensions, so the values would be compared to the tolerances.

Positive aspects of weld neck-flange.

These flanges are fit to be sourced in environments which have extreme range of temperature, pressure, or numerous kinds of added strains, while their resilience is defined as to an extent of these environmental stresses being shared with the material with which these flanges are welded. Such flanges have been used successfully at up to 5,000 psi.

The function and Pros of weld neck flange.

weld neck flange application.

The weld neck flanges have a tapered hub and therefore are usually used as a high pressure application. Whether working with a weld neck flange, it is very important to specify the schedule pipe is being used. The inside diameter of the flange will match the inside diameter of the pipe as a result of tapered hub and the butt weld joint, this flange will be very resistant to the dishing

A weld neck flange was named that way as the neck portion of the flange is welded to the end of the piping system. It is made with purpose of burden transferring to the pipe in order to avoid high stress concentrations at the bottom of the flange. Making weld neck out of such material makes them costlier.

According to platinex company line, it is mainly concerned with the manufacture of flanges of different kinds. Besides straight cut and forging, we also have different kinds of weld neck flanges, which is machined, drilled and rigorously tested and inspected by professional testing instrument. if you have a need to any welded neck flanges, be sure to take a contact us.

Stainless Steel weld neck raised face flanges, Alloy Steel Weld Neck Flanges Manufacturer & Exporter.

ASME B 16.5, ASME B 16.47, ASTM A182, 105, 350, SB564, 160, 472 Weld Neck Flanges, Duplex WNRF Flanges Suppliers.

Platinex Piping Solutions LLP is the leading Manufacturers, Supplier and Exporters of weld neck raised face flanges using high quality raw materials. Weld-Neck flanges or welding-neck flanges can be differentiated from all other types of flange by their long tapered hub. These weld neck flanges, industrial weld neck flanges, forged flanges are normally used for high-pressure, cold or hot temperature. The various types of steel weld neck flanges are Weld Neck Flat Face Flanges, Raised Face Weld Neck Flanges. These WNRF Flanges is available in various size, grades, Specification & thickness as per the clients requirments.

weld neck raised face flanges


Size:½” (15 NB) to 48″ (1200NB)
Class:150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Standards:ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN:DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S:BS4504 , BS4504, BS1560, BS10
Flange Face Type:Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface Treatment:Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized


Stainless Steel Weld Neck Raised Face Flanges :

ASTM A182, A240 F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L

Carbon Steel Weld Neck Raised Face Flanges :

ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

Alloy Steel Weld Neck Raised Face Flanges :

ASTM A182 F1,F5,F9,F11,F22,F91

Nickel Alloy Weld Neck Raised Face Flanges :

ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020).

Copper Alloy Weld Neck Raised Face Flanges :

ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, LF2 , LF3.

Duplex Steel Weld Neck Raised Face Flanges :

ASTM A182, A240 F 44, F 45, F51, F 53, F 55, F 60, F 61