Buttweld Pipe Fittings Manufacturers, Suppliers, Stockists – ASME B16.9, Elbows, Tees, Reducers, Caps, Stub Ends, Crosses, Laterals, Olets, Return Bends

  • We have around 30 years experience in manufacturing of butt weld pipe fittings in size ranging from 1/2” to 60”, schedule from Sch5s to SchXXS. Metallica specializes in manufacturing elbows, tee, reducer, caps, crosses, stub ends, etc conforming to ASME, ANSI, and DIN standard. We also produce custom size pipe fittings made according to drawings from our clients. Common material for butt weld fittings are carbon steel, alloy steel, stainless steel, super austenitic, duplex, super duplex, nickel alloys, titanium, and aluminum etc. Our products are widely used in oil & gas, petrochemical, refineries, power plant, shipbuilding, metallurgy, paper making and other industries.
  • A butt weld pipe fitting is a type of pipe fitting, which is designed to be welded on site to connect pipes together. Welding of a buttweld pipe fitting to pipes or other fittings is generally done to allow change in direction of the piping system. Buttweld fittings are generally identified or inquired in nominal pipe sizes with specified pipe schedule. Buttweld fitting’s dimensions and tolerances are defined as per ASME B16.9 standard. All buttweld pipe fittings have beveled ends as per ASME B16.25 standard. This helps create full penetration weld without any extra preparation needed for the butt weld fitting.
  • Manufacturing buttweld fittings – A butt weld pipe fitting is made by the process of hot forming that includes bending and forming to shape. The starting material of butt weld fitting is a pipe that is cut to length, heated and molded into specific shapes by means of dies. Heat treatment is also done to remove residual stresses and obtain desired mechanical properties. Sch 10 fittings are also more common in stainless steel butt weld fitting, while SCH 40 is common for carbon steel butweld fittings.
  • Being one of the largest volume buttweld pipe fittings manufacturer and supplier in Mumbai, we can guarantee you the lowest prices. At Metallica Metals, we believe in selling in volume and increasing our customer base across the globe, enabling us to work on low margins. We have an extensive trader network across India, USA, Europe and the Middle East, who buy from us on a regular basis.
  • In addition to traders, we have many EPC contractors, companies and end users in various industries as our customers. We are leading buttweld fittings suppliers for various applications ranging from low/medium/high pressure or temperatures.
  • ASME 16.9 covers overall dimensions, tolerances, ratings, testing, and markings for factory-made wrought butt-welding fittings in sizes NPS 1⁄2 through NPS 48 (DN 15 through DN 1200). The term “wrought” denotes fittings made of seamless or welded pipes, tubing, plates, or forgings. These fittings include long radius elbows, reducing elbows, long radius returns, short radius elbows, short radius 180° returns, 3D elbows, straight tees, straight crosses, reducing tees, reducing crosses, lap joint stub ends, caps, concentric reducers, and eccentric reducers. Butt Weld Pipe Fittings Manufacturers and Suppliers

Butt Weld Pipe Fittings Manufacturers and Suppliers

Materials-Standards for ASME B16.9 Fittings

ASTM Standards Material Specification
A234 Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
A403 Wrought Austenitic Stainless Steel Piping Fittings
A420 Wrought Carbon Steel and Alloy Steel for Low Temperature Service
A815 Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings
A361 Wrought Aluminum and Aluminum Alloy Welding Fittings
A363 Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings
A366 Wrought Nickel and Nickel Alloy Fittings

Stock and Production Range for Butt Weld Fittings

Product Butt Weld Fittings
Type Seamless or Welded
Produce Technology Seamless, Welding
Size Seamless size from DN15-DN700; Welding size:DN200-DN2000
Thickness SCH10,SCH20,SCH30,STD,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XS,XXS    HIGH THICKNESS TO 80MM
Material – Carbon Steel Buttweld Fittings : ASTM/ASME A234 WPB, WPC
– Alloy Steel Buttweld Fittings: ASTM/ASME A234 WP1, WP12, WP11, WP22, WP5, WP91, WP911
– Stanless Steel Buttweld Fittings: ASTM/ASME A403 WP 304/304L, WP 316/316L/316Ti, ASTM/ASME A403 WP 321/321H, ASTM/ASME A403 WP 347/347H
– Low-Temperature Buttweld Steel Fittings : ASTM/ASME A420 WPL3/WPL6
– High Performance Buttweld Fittings: ASTM/ASME A860 WPHY 42, 46, 52, 60, 65, 70
Standard 1) ASME B16.9, ASME B16.25, MSS SP 75, MSS SP 43
2) KS B-1522, KS B-1541
3) JIS 2311, JIS 2312, JIS2313
4) EN10253-1, EN10253-2, EN10253-3, EN10253-4
5) DIN2605-1, DIN2605-2
6) BS1640-1, BS1640-2, BS1640-3, BS1640-4, BS1965-1
7) GOST 17375, GOST 17376, GOST 17378, GOST 17379
Face Coatings: Special Coating i.e. Cement Mortar Lining, FBE Coating, Galvanized (Hot Dipped Electro-Plating) etc. can be provided
Inspection Chemical Elements,  Mechanical Property,  Metallographic Test,  HIC /SSC,   Heat Treatment,    Ultrasonic Test,   Penetration Test,   Magnetic Powder Test,    X-Ray Test,  Hydraulic Pressure Test,  Blasting Experiment, we can make them according to your request.
Application Water Disposal, Electric Power, Chemical Engineering, Ship Building, Nuclear Energy, Garbage Disposal, Natural Gas, Petroleum Oil.

Advantages of use of Butt-weld Fittings

  1. Welding butt weldable fitting to a piping system, ensures a 100% leak proof connection.
  2. The piping system which uses a buttweld fittings requires less space.
  3. The continuous metal structure formed due to welding of a buttweld fitting to pipes gives enough strength to the system.
  4. Smooth inner surface and gradual direction results in lower pressure loss, and lower corrosion or abrasion resistance.

Fittings are divided into three groups:

  • Buttweld (BW) fittings whose dimensions, dimensional tolerances et cetera are defined in the ASME B16.9 standards. Light-weight corrosion resistant fittings are made to MSS SP43.
  • Socket Weld (SW) fittings Class 3000, 6000, 9000 are defined in the ASME B16.11 standards.
  • Threaded (THD), screwed fittings Class 2000, 3000, 6000 are defined in the ASME B16.11 standards.

Standard Types of Buttweld Fittings 

Buttweld fittings (also know as welded pipe fittings) in carbon steel and stainless steel are the joining components that make possible the assembly of valves, pipes and equipment onto the piping system. Butt welded fittings compliment pipe flanges in any piping system and allows;

  • Change direction of flow in a piping system
  • Connect or joint pipes and equipment
  • Provide branches, access and takeoffs for auxiliary equipment

Manufacturing standards are governed under ANSI/ASME B 16.9. Butt weld is to connect pipes and fittings ends by butt welding process. Also known by welded pipe fittings. It has ends in beveled or plain, dimensions normally from 3/4” to 24”. Unlike the socket weld fittings sizes below NPS 2”, butt weld fittings size can reach to a specific range, you will find that the butt weld fittings range in size from 1/2” to 72”. They are manufactured according to ASME B16.9; material in carbon, alloy and stainless steel. Butt-Weld Fittings are available in variety of kinds such as tees, caps, elbows, reducers and outlets. These fittings are the most common type of welded pipe fitting and are specified by nominal pipe size and pipe schedule. This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals, …) in a safe and efficient manner, over short or long distances. Other types of fittings can be threaded or socket welded.
There are many different types and shapes in the market.

There are different parameters to be considered before purchasing and that is the size of the pipe fittings in diameter, thickness of the wall to be according to the pressure in the pipes, materials, shape and many others.

Buttweld fittings use seamless or welded pipe as the starting material and are forged (through multiple process) to get the shape of elbows, tees and reducers etc. Just as the pipe is sold from Schedule 10 to Schedule 160, butt weld pipe fittings are sold the same way. Welded butt weld fittings are more common in stainless steel due to cost advantage. Sch 10 fittings are also more common in stainless steel butt weld fitting. A common example using welded pipe fitting is a pipe reduced by concentric reducer, welded to a weld neck flange and connected to an equipment.

Other types of fittings can be threaded or socket welded.

Standards and Specifications for Butt Weld Pipe Fittings

Standard Grade and Specification
ASME ANSI B16.9, ANSI B16.28, MSS-SP-43
DIN DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN EN10253-1, EN10253-2
ASTM A403 – ASME SA403 Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASME B16.9 Factory-Made Wrought Fittings Buttwelding
ASME B16.25 Buttwelding Ends
ASME B16.28 Wrought Steel Short Radius Elbows and Buttwelding Returns
MSS SP-43 Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications

Materials and Grades for Butt Weld Pipe Fittings

Material Grade
Carbon Steel WPB, WPC, WPL6
Chrome Moly WP5, WP9, WP11, WP12, WP22
Stainless Steel 304/304L, 316/316L, 304H, 316H, 309, 310S, 317L, 321/321H, 347/347H, 904L, DUPLEX 2205 / SUPER DUPLEX 2507
High Yield Carbon Steel WPHY42, WPHY52, WPHY65
Nickel Alloys Alloy 20, 200, 201, 400, 600, 625, 800H/HT, 825, 254SMO, AL6XN, C276, C22, B3, HAST-X
Standard Materials Carbon, Stainless, Chrome Moly, High Yield, Low Temperature, Aluminum
Types Elbows, Tees, Reducers, Caps, Stub Ends, Crosses, Laterals, Olets, Return Bends
Sizes Standard 1/2″ to 48″ (special order larger O.D. fittings)
Wall Sizes Schedule 20 thru XXH, and Special Wall Sizes
Specialty Items 3D & 5D Bends, Galvanizing, 100% X-ray Testing

Chemical Composition and Mechanical Properties of Butt Weld Pipe Fittings

1. Carbon Steel Butt Weld Pipe Fittings

ASTM A234 WPB is the Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service.

ASTM A234 WPB
ASME B16.9, B.11
NACE MRO175
MSS SP-83, SP-95

Chemical Composition

Grade C Mn P S Si Cr Mo Ni Cu Others
max max
WPB 0.3 0.29-1.06 0.05 0.058 0.1 0.4 0.15 0.4 0.4 V 0.08
(1,2,3,4,5) max min max max max max max

2. Stainless Steel Butt Weld Pipe Fittings

Stainless buttweld fittings are available in 316 and 304 grades.

Types Caps – Crosses – Elbows – Reducers – Stub Ends – Tees
Sizes 1/2″ – 36″ +
Schedules S/5s – XXH
Alloys Aluminium – Carbon – Nickel Alloys – Stainless

Chemical Composition

C Cr Mn Ni P S Si Mo
MAX MAX MAX MAX MAX
304/304L 0.035 18.0- 20.0 2 8.0-13.0 0.045 0.03 1
316/316L 0.035 16.0- 18.0 2 10.0-14.0 0.045 0.03 1 2.0-3.0

Mechanical Properties

304/304L 316/316L
Tensile Strength (KSI) 60 70
Yield Strength (KSI) 35 25
(KSI converts to MPA {Megapascals} by multiplying by 6.895)

3. Carbon and Alloy Steel Butt Weld Pipe Fittings

The ASTM A420 WPL6 steel pipe fittings means the butt welding pipe fittings whose material is ASTM A420 grade WPL6.ASTM A420 is standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service. So A420 WPL6 fittings are specially used in low temperature conditions.

Chemical Composition

Grade C Mn P S Si
WPL6(1)(2) 0.3 0.60-1.35 0.035 0.04 0.15-0.30

Mechanical Properties

Tensile Strength min, ksi [MPa] 60-85[415-585]
Yield Strength min, ksi [MPa] 35[240]

Butt Weld Dimensions

  • Butt Welded Pipe Fittings Dimensions refer to pipe size standards ANSI B36.10 and B36.19.
  • Diameter range: 1″, 2″, 3″, 4″, 6″, 8″ and maximum 72″.
  • Thickness range: Schedule 10, Schedule 40, Schedule 80, XS, XXS and SCH 160
  • In the case of involving mounting dimensions of butt welded fittings, this will include the diameter in the NPS and the thickness in the schedule.

Types of Butt Weld Pipe Fittings

  1. Pipe Elbows – Steel elbow is used to be installed between two lengths of pipe or tube allowing a change of direction, usually these carbon steel elbows distinguished by connection ends.
  2. Pipe Bending – Pipe bend can be made of variety materials, like carbon steel, alloy steel, stainless steel, low temperature steel or high-performance steel, etc.
  3. Pipe Tees – We can provide seamless tube tees and welding tube tees, which can also be divided into straight tees and reducing tees. Usually, the pipe tees have the same inlet and outlet sizes.
  4. Pipe Cross – A pipe fitting, having four openings in the same place, at right angles to each other. A pipe cross is a kind of pipe fitting. It is used in the place where four pipes meet together. The pipe cross may have one inlet and three outlets, or three inlets and one outlet.
  5. End Caps – End Cap, Carbon Steel cap, Stainless Steel Caps, ANSI, ISO, JIS and DIN Standards, Measures 1/2 to 56 Inches. Based on different materials, pipe caps include carbon steel cap, stainless steel cap, and alloy steel cap etc.
  6. Pipe Reducer – Pipe reducer are tube fittings that are widely used in a number of industries in order to providing greatest connection flexibility in connecting fractional tubes in various installations.
  7. Stub End – Stub Ends are fittings used in place of welded flanges where rotating back up flanges are desired. They are also called Lap Joints and Vanstone Flared Laps. A rotating back up flange seats itself against the back surface of the Stub End.
  8. Coupling Fittings – Coupling fittings are used for fluid conduits in which each end portion of two tubes to be connected is provided with a swaged-on adapter carrying the necessary means to connect or disconnect the tubes without disturbing the swaged-on adapter.

Advantages of Butt Weld Pipe Fittings

  • Various turning options and easy to weld.
  • Butt weld saves more cost than socket weld or threaded.
  • Allow thin thickness as SCH 10 or SCH 10S.
  • Compatible with different sizes from 1/4 inch to 24 inch and up to 72 inch.
  • Continuous metal structure increases the strength of the piping system.

What are Advantages of Butt Welding over Flanges?

  • Flanges connect pipes by bolting them together, whereas butt weld fittings connect pipes by welding them together.
  • Depending on size, butt weld fittings require 10% to 75% less material than a flanged connection, which means lower material cost and lower weight.
  • Welded construction permits greater freedom in designing a layout; this system uses less space, is more compact, and has greater strength.
  • Butt weld fittings provide optimum flow characteristics, without pockets or sharp corners, creating less frictional resistance, no pressure loss, less turbulence.
  • The welded connection would help to get more robust connection.
  • Continuous structure of metal would add to the strength of the piping system.
  • When butt weld fittings would be matched with the appropriate pipe schedules, they would help to offer a seamless flow inside the pipe.
  • It provides the option of various turn radius by using Long Radius, Short Radius, or 3R elbows.
  • Found to be cost effective compared to the socket weld or threaded counterparts.
  • These fittings would be available in Schedule 10, thus allowing for a thinner wall option.
  • These fittings have been found to be more common in the configuration of Schedule 10 and Schedule 40.

What is a Seamless Butt Weld Fitting?

  • A seamless butt weld pipe fitting is made directly from a section of seamless pipe material, by applying heat and pressure to transform pipe directly into an elbow or other shape.
  • A seamless fitting has no welded parts by itself, a characteristic demanded in some critical applications.
  • By comparison, a regular butt weld fitting has one, two or more welds, depending on dimension, shape and manufacturing method.
  • No weld means less risk of weld yield and porosities.

Applications of Butt Weld Pipe Fittings

Fittings are used wherever liquids, gases, chemicals and other fluids are created, processed, transported, or used. Range of industries is very wide, as shown below:

  • Energy related – Oil and gas industries, including upstream (exploration and production), midstream (transportation by ships, pipeline, rail, trucks; storage and wholesale) and downstream (refining into fuels or chemicals; marketing and distribution). Power plants using fossil or nuclear fuels. Geothermal energy for harnessing heat from the earth.
  • Food and beverage production – From basic ingredients to elaborate desserts. From milk, to juices and other beverages. Cold chain to keep produce fresh, drinks and frozen foods at a set temperature. Desalination plants to transform seawater into drinking water for arid areas and various tropical islands.
  • Pharmaceuticals and biotech production – Medicines and vaccines that treat illnesses and help restore bodies and minds to their top conditions.
  • Semiconductor manufacturing – Microchips that go into all electronics, including smartphones, tablets, computers, television sets, telecom networks.
  • Pulp and paper production – Newsprint, glossy paper, cardboard boxes, books, writing paper.
  • Production of construction materials and plastics – From roofing materials, to glassmaking for windows, to copper wiring for transporting electricity, and various plastics throughout houses and office buildings.

How are Buttweld Pipe Fittings Manufactured?

Key steps in manufacturing process are as follows:

  • Planning: based on fitting specifics and client requirements; includes creating part identification in manufacturing system.
  • Selection of raw material: metal; plate or pipe.
  • Cutting
  • Heating
  • Forming
  • Welding: for fittings that are not simple elbows, returns, bends, reducers or caps.
  • Inspection and tests: according to standards and client requirements.
  • Coating (if required).
  • Preparation of documentation.
  • Shipping.