MSS SP-97 Forged Branch Outlet Fittings – Socket Welding, Threaded, Buttwelding Ends – ASTM A105, A182 F304, F316, F304L, F316L, and A182 F5, F9, F11, F22, F91

• Types of Outlets Fittings – Butt Weld Outlet, Socket Weld Outlet, Threaded Outlet, Elbow Outlet, Lateral Outlet, Nipple Outlet, Sweep Outlet, Flanged Nipple Outlet
• Size: from 1/2″ NPS TO 24″ NPS, Pressure Rating: 3000LB, 6000LB (SCH80/XS,SCH160), Thread: NPT, NPSC, BSPT, BSPP, Type: Male and Female

Metallica is a well known manufacturer and supplier of forged branch outlet fittings for the clients from oil and gas, petrochemicals, railway, construction and other industries. Branch outlets are popularly known as Olets, which is a registered trademark of Bonney Forge. The MSS SP-97 Standard Practice covers essential dimensions, finish, tolerances, testing, marking, material, and minimum strength requirements for 90 degree integrally reinforced forged branch outlet fittings of buttwelding, socket welding, and threaded types. Fittings manufactured to this Standard Practice are designed to make a fully reinforced branch connection in accordance with applicable piping code requirements, when attached, at an opening in a run pipe by means of a full penetration weld. Fittings may be made to special dimensions, size, shape, tolerances, or of other wrought material by agreement between the manufacturer and the purchaser. We can produce forged branch outlet fittings in size range of 1/2″ to 24″. The most common and materials include ASTM A105, ASTM A182 F304, F316, F304L, F316L, and A182 F5/F9/F11/F22/F91. In nickel alloys we manufacturing forged branch outlets in various grades such as Alloy 200, 201, 400, K500, 600, 625, 800H/HT, 825, X-750, C276, Hastelloy B & C22.

Forged Outlet Pipe Fittings (Olets) Manufacturing Standards

This list outlines important industry standards governing the design, manufacture, and materials of outlet fittings such as weldolets, sockolets, thredolets, and other branch connection types:

• ASME B16.11: Covers forged steel fittings, including socket weld and threaded outlet fittings. Widely referenced for their design and manufacturing.

• MSS SP-97: Specifically focuses on integrally reinforced forged branch outlet fittings. Details dimensions, tolerances, and requirements for buttwelding, socket welding, and threaded outlet fittings.

• BS3799: A British standard relevant for socket weld fittings, particularly in high-pressure applications. Can apply to socket weld outlet fittings.

• ASTM A182: Specifies requirements for wrought alloy steel pipe fittings, including various types used as outlet fittings.

• ASTM A105: Covers carbon steel forgings suitable for piping applications, including the manufacturing of carbon steel outlet fittings.

• ANSI B1.20.1: Provides considerations for categorizing pipe fittings by dimension. Relevant for understanding the dimensional aspects of outlet fittings.

• ASTM A351: Defines the materials and castings used within pipe fittings. Applicable to cast outlet fittings, though forged are more common.

• IS 1239: An Indian standard covering various pipe fittings, including different types of outlet fittings used in India.

• IS 1879: An Indian standard specifically covering malleable cast iron pipe fittings. May include certain types of threaded outlet fittings made from this material.

• MSS SP-79: Specifies dimensions and tolerances for pipe fittings in general, which would include outlet fittings.

• MSS SP-83: Similar to MSS SP-79, this standard also specifies dimensions and tolerances for pipe fittings, relevant to outlet fitting manufacturing and inspection.

• MSS SP-58: Covers corrosion-resistant pipe fittings. Applicable to outlet fittings made from materials designed for corrosion resistance.

• MSS SP-75: Specifically covers essential dimensions, finish, tolerances, testing, marking, material, and minimum strength requirements for 90° and 45° integrally reinforced forged branch outlet fittings of buttwelding, socket welding, and threaded types. A key standard for many common outlet fittings.

This list provides a concise overview of the key standards relevant to outlet fittings, aiding in understanding their specifications and applications.

Production Range of Forged Branch Outlet Fittings

• Thread: NPT, NPSC, BSPT, BSPP, Type: Male and Female

Forged Branch Outlet Fittings Materials & Grades

Manufacturing Process for Outlet Fittings (Olets)

Discover the different manufacturing methods used to create essential outlet fittings like weldolets, sockolets, threadolets and more:

1. Hot Forming (Extrusion):

• Process: Metal (often steel) is heated to forging temperature and forced through a die under pressure to create the desired outlet shape.
• Tees: For tee fittings, the branch outlet is extruded while the main body is pressed.
• Wall Thickness Control: Allows for precise adjustment of the outlet’s wall thickness.
• Post-Forming: Includes heat treatment, machining for accurate dimensions, and Non-Destructive Evaluation (NDE) like Ultrasonic Testing (UT), Magnetic Particle Testing (MT), and Radiographic Testing (RT) to ensure quality.
• Finishing: Involves blasting, painting, and careful packaging.

2. Cold Forming (Hydraulic Bulging):

• Process: A pipe is cut, placed on a mandrel die, and then expanded into the die’s shape using hydraulic pressure, often with simultaneous induction heating.
• Applications: Commonly used for manufacturing certain types of outlet fittings and elbows.
• Post-Forming: Includes heat treatment and machining for final dimensions.
• Inspection: Visual and dimensional checks are performed before shipping.

3. Welding in Fitting Manufacturing:

• Butt Welding: Fitting components are often joined by preparing the ends and welding them together to form the final shape.
• Weldolet Specifics: Weldolets are created by welding the fitting directly onto an outlet of the main run pipe.
• Sweepolet Feature: Sweepolets utilize slanted ends to enhance welding support and strength.

4. Other Manufacturing Methods:

• Deep Drawing: Used to create end caps by stretching a metal blank into a die.
• Flaring: Employed to form stub ends by expanding the end of a pipe.
• Forging: Heated metal is shaped and compressed into the desired outlet fitting form using dies and hydraulic presses.

5. Common Materials for Outlet Fittings:

• • Variety: Outlet fittings are manufactured from a wide range of materials, including PVC, CPVC, copper, steel, brass, ABS, HDPE, and polypropylene.
  • Material Compatibility: Crucial to select a fitting material that is compatible with the connected pipes to prevent corrosion and ensure system integrity.

Types of Outlet Fittings (Olets)

• • Weldolet (Welding Outlet):
    • Most popular type for branch connections.
    • Butt-welded connection for strength and minimized stress concentration.
    • Available in pressure ratings: STD, XS, Sch160.

  • Sockolet (Socket Weld Outlet):

    • Similar to weldolet but with a socket weld connection for the branch pipe.
    • Common pressure ratings: 3000#, 6000#.

  • Threadolet (Threaded Outlet):

    • Similar to weldolet but with a threaded connection for the branch pipe (no welding required).
    • Common pressure ratings: 3000#, 6000#.

  • Elbolet (Elbow Outlet):

    • Designed for branch connections on long or short radius elbows.
    • Connection types: butt-welded, socket-welded, threaded.

  • Nipolet (Nipple Outlet):

    • Typically used for valve installation and exhaust lines.
    • Available in thickness grades: XS, XXS.
    • Standard lengths range from 3-1/2 to 6-1/2 inches.

  • Weldoflange:

    • A combination fitting resembling a welded flange and a welding neck flange.

  • Nipoflange:

    • A combination fitting resembling a nipolet and a welding neck flange.

  • Sweepolet (Swept Outlet):

    • Features a contoured, wavy shape for reinforcement.
    • Butt-welded connection, typically used in low-pressure pipelines.

  • Coupolet (Coupling Outlet):

    • Intended for low-pressure piping applications, including sprinkler systems (fire protection).

  • Latrolet (Lateral Outlet):

    • Used for creating 45-degree branch connections.
    • Connection types: butt-welded, socket-welded, threaded.

  • Insert Weldolet (Insert Welding Outlet):

    • A contoured butt-weld branch attachment used in less critical applications.
    • Beveled ends facilitate butt-welding installation.

  • Brazolet (Brazo Outlet):

    • Becoming more common internationally for connecting reinforced fittings.
    • Available in standard connection methods.