ANSI B16.9 butt weld Pipe Fitting carbon steel 180 degree welded elbow

Short Description:

Name:Carbon Steel Pipe 180 deg Elbow
Standard: ANSI B16.9
Degree: 180degree, 180d, 180 deg
Material: ASTM A234WPB
Wall thickness :SCH40

  • Color: black or varnished
  • End: bevel end
  • Product Detail


    Product Name Pipe elbow
    Size 1/2"-36" seamless elbow(SMLS elbow), 26"-110" welded with seam. Biggest outside diameter can be 4000mm
    Standard ANSI B16.9, EN10253-2, DIN2605, GOST17375-2001, JIS B2313, MSS SP 75, etc.
    Wall thickness STD, XS, XXS, SCH20,SCH30,SCH40, SCH60, SCH80, SCH160, XXS and etc.
    Degree 30° 45° 60° 90° 180°,etc
    Radius LR/long radius/R=1.5D,SR/Short radius/R=1D
    End Bevel end/BE/buttweld
    Surface nature color, varnished, black painting, anti-rust oil etc.
    Material Carbon steel: A234WPB, A420 WPL6 St37,St45, E24, A42CP, 16Mn, Q345, P245GH,P235GH, P265GH, P280GH, P295GH, P355GH etc.
      Pipeline steel: ASTM 860 WPHY42, WPHY52, WPHY60, WPHY65,WPHY70, WPHY80 and etc.
      Cr-Mo alloy steel: A234 WP11,WP22,WP5,WP9,WP91, 10CrMo9-10, 16Mo3 , 12crmov, etc.
    Application Petrochemical industry;aviation and aerospace industry;pharmaceutical industry,gas exhaust; power plant;ship building; water treatment, etc.
    Advantages ready stock,faster delivery time;available in all sizes,customized;high quality


    Butt welded pipe fittings includes steel pipe elbow, steel pipe tee, steel pipe reduer, steel pipe cap. All those butt welding pipe fittings, we can supply together, we have more 20 years production experiences.

    If you are also interested other fittings, please click followed LINK to check details.

     PIPE TEE                                PIPE REDUCER                             PIPE CAP                                         PIPE BEND                                     FORGED FITTINGS


    Steel pipe elbow is a key parts in a piping system for to change the fluid flow direction. It is used to connect two pipes with same or different nominal diameters, and to make the pipe turn to a certain direction of 45 degree or 90 degree.

    For industrial pipe elbow, the connectin end type is butt weld, according to ANSI B16.25. Butt welded can described butt welding, buttweld, bevel end. BW


    Elbow could be ranged from direction angle, connection types, length and radius, material types.

    Classified by Direction Angle

    As we know, according to fluid direction of the pipelines, elbow can be divided into different degrees, such as 45 degree, 90 degree,180 degree, which are most common degrees. Also there has 60 degree and 120 degree, for some special pipelines.

    For 90 degree  elbow, also described 90d elbow, or 90 deg elbow.

    What is Elbow Radius

    The elbow radius mean curvature radius. If the radius is the same as pipe diameter, it called short radius elbow, also called SR elbow, normally for low pressure and low speed pipelines.

    If the radius is larger than pipe diameter, R ≥ 1.5 Diameter, then we call it a long radius elbow (LR Elbow), applied for high pressure and high flow rate pipelines.

    If radius more than 1.5D, always named bend.  elbow bend pipe fittings. Such as 2d elbow, 2d bend, 3d elbow, 3d bend, etc.

    Classification by Material

    Carbon steel, also called mild steel or black steel. Such as ASTM  A234 WPB

    Looking for stainless steel elbows, please click this link to find more details: STAINLESS STEEL ELBOWS

    Shape Type

    Can be equal elbow or  Reducing elbow


    Sand Blast

    After hot forming, we arrange sand blast to make the surface to be clean and smooth.

    After Sand blast, to avoid get rust, should do black painting or anti-rust oil, Hot dip galvanized (HDG) , epoxy, 3PE,  vanished surface, etc. That is depend on customer's request.


    1. Keep sample raw material to trace.
    2. Arrange heat treatment as per standard strictly.


    Various marking work, can be curved, painting, lable. Or on your request. We accept to mark your LOGO.




    1. Bevel end as per ANSI B16.25.

    2. Sand blast first, then Perfect painting work. Also can be varnished.

    3. Without lamination and cracks.

    4. Without any weld repairs.



    1. Dimension measurements, all within standard tolerance.

    2. Thickness tolerance:+/-12.5% , or on your request

    3. PMI

    4. MT, UT,X-ray test

    5. Accept Third party inspection

    6. Supply MTC, EN10204 3.1/3.2 certificate




    1. Packed by plywood case or plywood pallet as per ISPM15

    2. we will put packing list on each package

    3. we will put shipping markings on each package. Markings words are on your request.

    4. All  wood package materials are fumigation free


    1. What is ANSI B16.9?
    ANSI B16.9 refers to the American National Standards Institute (ANSI) standard for factory-made forged butt-weld pipe fittings. It specifies the dimensions, tolerances, materials and testing requirements for butt welded pipe fittings.

    2. What are butt welded pipe fittings?
    Butt weld fittings are pipe fittings that are welded to the ends of pipes or other fittings to form a strong, leak-proof joint. A butt weld connection is made by inserting the end of a pipe or fitting into the socket of another pipe or fitting and welding the joint.

    3. What is a carbon steel 180 degree welding elbow?
    Carbon steel 180 degree welded elbow is a pipe fitting used to change the direction of the pipe 180 degrees. It is available in long or short radius designs and is made from carbon steel material. Use a butt weld connection to connect an elbow to a pipe or other fitting.

    4. What are the requirements for welded elbows in ANSI B16.9?
    ANSI B16.9 specifies the dimensions, tolerances, materials, and testing requirements for welded elbows. It provides guidance on the manufacturing process, including outer diameter, wall thickness, center-to-end dimensions and radius of curvature for different sized elbows.

    5. What are the advantages of using carbon steel for butt welded pipe fittings?
    Carbon steel is widely used in butt welded pipe fittings due to its excellent strength, durability and corrosion resistance. It can withstand high pressure and high temperature environments and has a relatively high cost performance. Carbon steel fittings are suitable for a variety of applications in the oil and gas, petrochemical and power generation industries.

    6. Can carbon steel 180-degree elbow be used in both high-pressure and low-pressure systems?
    Yes, carbon steel 180 degree welded elbows can be used in both high and low pressure systems. However, the specific pressure rating of the elbow should be considered based on the application requirements. Accessories must be verified for compatibility with expected system pressures.

    7. Is the carbon steel 180-degree welded elbow suitable for corrosive environments?
    Yes, carbon steel fittings are generally suitable for use in corrosive environments. However, the type and concentration of corrosive media should be considered when selecting materials. In more corrosive environments, additional corrosion protection may be required, such as exterior coatings or linings.

    8. Can carbon steel 180-degree elbows be used with pipes made of other materials?
    Yes, carbon steel 180-degree welded elbows can be used with pipes made of stainless steel, alloy steel, non-ferrous metals and other materials. However, for long-term performance, compatibility between materials and potential galvanic corrosion effects should be considered.

    9. What tests have been performed on ANSI B16.9 carbon steel 180 degree elbows?
    ANSI B16.9 specifies various tests to ensure the quality and integrity of carbon steel 180 degree welded elbows. These tests may include dimensional inspection, visual inspection, ultrasonic inspection, tensile strength testing, impact testing and non-destructive testing (such as dye penetration or radiographic inspection).

    10. Can carbon steel 180-degree elbows be modified or welded on site?
    Carbon steel 180 degree elbows can be modified or welded in the field but should be done by qualified and experienced personnel in accordance with industry standards and procedures. It is recommended to consult the manufacturer or professional engineer for guidance to ensure the safety and performance of modified accessories.

  • Previous:
  • Next: