Weld Neck Flange

Short Description:

What is weld neck flange A weld neck flanges (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant. A weld neck flange consists of a circular fitting with a protruding rim around the circumference. Generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange t...


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  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Product Detail

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    What is weld neck flange

    A weld neck flanges (also known as a high-hub flange and tapered hub flange) is a type of flange. There are two designs. The regular type is used with pipes. The long type is unsuitable for pipes and is used in process plant.

    A weld neck flange consists of a circular fitting with a protruding rim around the circumference. Generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts.

    The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange.

    The Socket Welding Flange is attached to the pipe by a fillet weld around the hub of the flange.

    WN flange.6” CL150,SCH40,ASME B16.5/ASTM A105

    Specification

    Type

    :

    WN Forged Flange

    Size

    :

    ½” (15 NB) to 48″ (1200NB)

    Standard

    :

    ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820

    Class

    :

    150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

    DIN

    :

    DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673

    BS

    :

    BS4504 , BS4504, BS1560, BS10

    In Form

    :

    SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc

    Specialize

    :

    As per drawing

    Coating/Surface Treatment

    :

    Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

    Connection Type

    :

    Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large Tongue & Groove, Small Tongue & Groove

    Flange Face Type

    :

    Flat Face (FF), Raise Face (RF), Ring Joint (RJT)

    Dimensions

    :

    ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

    Packing

    :

    No Fumigate or Fumigate Plywood/Wood Pallet or Case

    Usage

    :

    Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.

    Materials and Grade

    Carbon Steel :

    ASTM A105 ,A350 LF2

    Alloy steel :

    ASTM A182 F11/F12/F22/F5/F9/F91

    Stainless Steel:

    ASTM A182 F304/ F304L/ F316/ F316L/F310

    Marking on the flange

    Shipping mark stick to outside of package. Following shall be marked on flange body.

    .Manufacturer logo

    .ASTM material code

    .Material Grade

    .Service rating (Pressure-temperature Class))

    .Size

    .Thickness (Schedule)

    .Heat No

    .Special marking if any QT (Quenched and tempered)

    or W (Repair by welding)

    Processing

    1. Raw Material

    Raw Material Check

    Quantity Check

    Visual & Dimension Check

    2. Material Inspection

    Chemical Analysis Check

    Preservation Analysis Certificate

    3. Material Cutting

    Weight Measuring

    Cut Surface Check

    Marking

    4. Flange forging

    Material Grade Check

    Weight Measuring

    Temperature Control

    5. Heat Treatment

    Normalizing

    Tempering, Q.T

    Solution Treatment

    Mechanical Test

    6. Forging Rolling

    Material Grade Check

    Weight Measuring

    Temperature Check

    Dimension Check

    7.Final Inspection

    Dimension size inspect

    Visual Test

    Nondestructive Test

    8. Rust Prevention

    Preserve Check

    Marking on the flange

    Marking on the flange

    9. Well Packing

    Packing Spec. CheckPacking Spec. Check

    Packing Inspection

    Delivery


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