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High quality Butt – Welding Pipe Fittings 12 Inch Sch40S Stainless Steel ASTM A316L 304L Equal Tee

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    ASME B16.9 Pipe End Caps and Butt Weld Elbow 

    Fittings are important instruments that help join different piping systems together. Buttweld Fittings provide a unique way to join piping systems together. In this, fitting pieces of metal are placed over each other and welded. These fittings are unique because of the superior strength and excellent tolerances they exhibit in stress-induced environments. The Butt Weld Pipe Fittings provides options for manipulating the piping system in various directions or pressures. These fittings provide a leakproof and reliable piping connection. The Butt Weld Elbow is used to change the direction of flow of both fluids and gases in these systems. These elbows come in either short or long radius elbows. Their direction can be changed by 22.5, 45, 90, and 180 degrees. The Butt Weld 90 Elbow is known as a quarter bend elbow and is the most common elbow in the industry. These elbows possess superior tensile and yield strength. They allow for a smooth movement of flow through them. Reducing Elbow Buttweld are made up of openings of different sizes. This enables them to connect pipes of different sizes in a piping system.

    A Butt Weld Tee is a pipe fitting that has 3 openings. Each opening can connect pipes together. This is used to increase the flow of fluids and gases or divert the flow in different piping systems. This Tee Butt Weld helps in connecting the fitting to a stud or the divider. They are widely used in the transportation of potable water and firefighting systems. These tees are available either as equal or reducing tees. The Butt Weld Reducing Tee has an opening that is smaller in comparison to the other two openings. These tees are common components in vacuum cleaners. In the Butt Weld Reducer, different sizes of pipes can be installed. These reducers are also used in systems wherein the pressure is increased or decreased significantly. They are available as either concentric or eccentric reducers. 

    The Butt Weld Pipe Cap is used as a protective device on pipes, which protects them during transportation from falls. It also acts as a device to prevent the pipes from getting corroded due to moisture build-up. Butt Weld Cap can also help eliminate air blocks in pipelines. They are available in lengths up to 700mm. Our experience makes use of the latest technology and top-quality raw materials while producing all the products of the ASME B16.9 Buttwelded Fittings.

    Buttweld Fittings Specification

    Standard Code  Standard Name
    ASME B16.9 Factory-made wrought steel butt-welding fittings
    ASME B16.5 Pipe flanges and flanged fittings
    ASME B16.11 Forged fittings socket-welding and threaded
    ASME B16.47 Steel flanges
    ASME B16.28 Wrought steel butt-welding short radius elbows and returns
    MSS-SP-43 Wrought stainless steel butt-welding fittings
    MSS-SP-44 Steel flanges
    MSS-SP-75 Specification for high test wrought butt welding fittings
    MSS-SP-79 Socket-welding reducer inserts
    MSS-SP-83 Class 3000 steel pipe unions socket-welding and threaded
    MSS-SP-95 Swage nipples and Circle plugs
    MSS-SP-97 Integrally reinforced forged branch outlet fittings-socket welding, threaded and butt-welding ends
    ANSI/AWWA C207 Steel Pipe Flanges For Waterworks Service
    Elbows, seamless/ welded  Type 2D, 3D, 5D DIN EN 10253 Typ A/B DIN 2605 part 1/2
    Tees, seamless / welded DIN EN 10253 Typ A/B DIN 2615 part 1/2
    Reducer, seamless / welded        Concentric and eccentric DIN EN 10253 Typ A/B DIN 2616 Teil 1/2 
    Caps DIN EN 10253 Typ A/B DIN 2617

    Material of Buttweld Pipe Fittings

    Butt Weld Pipe Fittings manufacturer in India, we use European/ German & Korean raw material to produce Butt Weld Reducing Tee and Cap

    Nickel – Monel® – Inconel® – Incoloy® – Hastelloy® – Alloy 20 – Duplex

    Nickel Alloy Butt Welding Fittings

    ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 ( INCONEL 601 ) , UNS 6625 (INCONEL 625) , UNS 10276 ( HASTELLOY C 276 )

    COPPER Alloy Steel Butt Welding Fittings

    ASTM / ASME SB 111 UNS NO.C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 , C 71500
    ASTM / ASME SB 466 UNS NO.C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)

    Stainless Steel Butt Welding Fittings

    ASTM / ASME SA 403 GR WP “S” / “W” / ” WX” 304 , 304L, 304H, 304N, 304LN, 309, 310H, 316, 316H, 317, 317L, 321, 321H, 347, 347 H

    Duplex Steel Butt Welding Fittings

    ASTM / ASME SA 815 UNS NO.S 31803, S 32205, S 32550, S 32750, S 32760

    Carbon Steel Butt Welding Fittings

    ASTM / ASME A 234 WPB, WPC
    ASTM / ASME A 860 WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70

    Alloy Steel Butt Welding Fittings

    ASTM / ASME A 234 WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 23, WP 91

    Manufacturing Buttweld Fittings

    The most appropriate manufacturing method of a product will be decided with consideration of its material, sizes, shape, use, standards and other properties.

    There are numerous processes for manufacturing Elbows alone, several examples listed as follows.


    TEES: Hydraulic Bulge method (Cold Forming)

    After cutting and placing raw material into a die, the pipe is pressed as hydraulic pressure pushes out the branch. The Tee is pressed against the die, leaving the finished product to have a truly smooth outer surface.

    Manufacturing chart-ELBOWS: "Monaka" method

    TEES: Extrusion method (Hot Forming)

    Using raw material with a bigger diameter than the finished product, the branch outlet is extruded from pipe while the main body is being pressed. The outlet’s wall thickness can also be adjusted as needed. Applied to Tees with large diameters, heavy wall thickness and/or special material with challenging workability that cannot be manufactured using the hydraulic bulge method.

    TEES: Steel Plate Welding method

    Manufacturing methods for Elbows, using steel plates as the raw material. Includes UO-method, Monaka method and Throat-welding method.

    UO method: After raw material plate is cut out into a specially designed shape, it is shaped first into an U-shape using a die, then the branch pipe is formed and then shaped into an O-shape (tubular form) using another die, finished with a single weld on the opposite side of the branch pipe. Usually applied to large diameter items used in severe conditions.
    “Monaka” method: Two pieces of raw material plates cut out symmetrically are press formed and welded together. Usually applied to large-diameter items.
    Throat-welding method: Mainly used for stainless and non-metal items, this method is similar to UO-method but with the weld on the same side as the branch pipe and the “branch throat.” Usually applied to low-pressure, corrosion-resistant items.


    Material Grades of ASME B16.9 Butt welded Fittings

    • St 37.0, S235
    • St 35.8/I and III, P235GH TC1 and TC2
    • C 22.8, H II, P265GH
    • 15 Mo 3 (15 Mo 3 )
    • 13 CrMo 45, 10 CrMo 9 10, 12 CrMo 19 5
    • StE 290.7, L290NB, StE 360.7, L360NB
    • W/TStE 355, P355QH1
    • 1.4541, 1.4571, 1.4301, 1.4306, 1.4307, 1.4404, 1.4462 – Duplex , 1.4529, 1.4539, 1.4547, 1.4410 (Super-Duplex)

    Butt Weld Reducing Tee Testing

    pipe tee

    Pipe Tee dimensions are covered in ASME B16.9. Refer to the table given below for the size 1/2″ to 48″. In piping, two types of tees are used, straight or equal and reducing tee. The following shall be checked during the inspection of Pipe Tee Dimensions.

    • The diameter of the branch and run pipe
    • The thickness of the tee
    • Center to center dimension for branch
    • Length of the tee.

    Straight / Equal Tee Dimensions

    equal tee dimensions

    Pipe Tee Dimensions As Per ASME B16.9
    NOMINAL PIPE SIZE OUTSIDE DIAMETER CENTER TO END LENGTH
    Inch. OD C M
    1/2 21.3 25 25
    3/4 26.7 29 29
    1 33.4 38 38
    1 1/4 42.2 48 48
    1 1/2 48.3 57 57
    2 60.3 64 64
    2 1/2 73 76 76
    3 88.9 86 86
    3 1/2 101.6 95 95
    4 114.3 105 105
    5 141.3 124 124
    6 168.3 143 143
    8 219.1 178 178
    10 273.1 216 216
    12 323.9 254 254
    14 355.6 279 279
    16 406.4 305 305
    18 457.2 343 343
    20 508 381 381
    22 559 419 419
    24 610 432 432
    26 660 495 495
    28 711 521 521
    30 762 559 559
    32 813 597 597
    34 864 635 635
    36 914 673 673
    38 965 711 711
    40 1016 749 749
    42 1067 762 711
    44 1118 813 762
    46 1168 851 800
    48 1219 889 838
    All Dimensions are in mm


    Reducing Tee Dimensions

    reducing tee dimensions
    Pipe Tee Dimensions As Per ASME B16.9
    NOMINAL PIPE SIZE OUTSIDE DIAMETER CENTER TO END
    Inch D P C M
    1/2 x 3/8 21.3 17.1 25 25
    1/2 x 1/4 21.3 13.7 25 25
    3/4 x 1/2 26.7 21.3 29 29
    3/4 x 3/8 26.7 17.1 29 29
    1 x 3/4 33.4 26.7 38 38
    1 x 1/2 33.4 21.3 38 38
    1 1/4 x 1 42.2 33.4 48 48
    1 1/4 x 3/4 42.2 26.7 48 48
    1 1/4 x 1/2 42.2 21.3 48 48
    1 1/2 x 1 1/2 48.3 42.2 57 57
    1 1/2 x 1 48.3 33.4 57 57
    1 1/2 x 3/4 48.3 26.7 57 57
    1 1/2 x 1/2 48.3 21.3 57 57
    2 x 1 1/2 60.3 48.2 64 60
    2 x 1 1/4 60.3 42.2 64 57
    2 x 1 60.3 33.4 64 51
    2 x 3/4 60.3 26.7 64 44
    2 1/2 x 2 73 60.3 76 70
    2 1/2 x 1 1/2 73 48.3 76 67
    2 1/2 x 1 1/4 73 42.2 76 64
    2 1/2 x 1 73 33.4 76 57
    3 x 2 1/2 88.9 73 86 83
    3 x 2 88.9 60.3 86 76
    3 x 1 1/2 88.9 48.3 86 73
    3 x 1 1/4 88.9 42.2 86 70
    3 1/2 x 3 101.6 88.9 95 92
    3 1/2 x 21/2 101.6 73 95 89
    3 1/2 x 2 101.6 60.3 95 83
    3 1/2 x 1 1/2 101.6 48.3 95 79
    4 x 3 1/2 114.3 101.6 105 102
    4 x 3 114.3 88.9 105 98
    4 x 2 1/2 114.3 73 105 95
    4 x 2 114.3 60.3 105 89
    4 x 1 1/2 114.3 48.3 105 86
    5 x 4 141.3 114.3 124 117
    5 x 3 1/2 141.3 101.6 124 114
    5 x 3 141.3 88.9 124 111
    5 x 2 1/2 141.3 73 124 108
    5 x 2 141.3 60.3 124 105
    6 x 5 168.3 141.3 143 137
    6 x 4 168.3 114.3 143 130
    6 x 3 1/2 168.3 101.6 143 127
    6 x 3 168.3 88.9 143 124
    6 x 2 1/2 168.3 73 143 121
    8 x 6 219.1 168.3 178 168
    8 x 5 219.1 141.3 178 162
    8 x 4 219.1 114.3 178 156
    8 x 3 1/2 219.1 101.6 178 152
    10 x 8 273.1 219.1 216 203
    10 x 6 273.1 168.1 216 194
    10 x 5 273.1 141.3 216 191
    10 x 4 273.1 114.3 216 184
    12 x 10 323.9 273.1 254 241
    12 x 8 323.9 219.1 254 229
    12 x 6 323.9 168.3 254 219
    12 x 5 323.9 141.3 254 216
    14 x 12 355.6 323.9 279 270
    14 x 10 355.6 273.1 279 257
    14 x 8 355.6 219.1 279 248
    14 x 6 355.6 168.3 279 238
    16 x 14 406.4 355.6 305 305
    16 x 12 406.4 323.9 305 295
    16 x 10 406.4 273.1 305 283
    16 x 8 406.4 219.1 305 273
    16 x 6 406.4 168.3 305 264
    18 x 16 457 406.4 343 330
    18 x 14 457 355.6 343 330
    18 x 12 457 323.9 343 321
    18 x 10 457 273.1 343 308
    18 x 8 457 219.1 343 298
    20 x 18 508 457 381 368
    20 x 16 508 406.4 381 356
    20 x 14 508 355.6 381 356
    20 x 12 508 323.9 381 346
    20 x 10 508 273.1 381 333
    20 x 8 508 219.1 381 324
    22 x 20 559 508 419 406
    22 x 18 559 457 419 394
    22 x 16 559 406.4 419 381
    22 x 14 559 355.6 419 381
    22 x 12 559 323.9 419 371
    24 x 10 559 273.1 419 359
    24 x 22 610 559 432 432
    24 x 20 610 508 432 432
    24 x 18 610 457 432 419
    24 x 16 610 406.4 432 406
    24 x 14 610 355.6 432 406
    24 x 12 610 323.9 432 397
    24 x 10 610 273.1 432 384
    All Dimensions are in mm


    Pipe FIttings Quiz – Test yourself, Take This Quiz


    Pipe Fittings Dimensions Tolerance as per ASME B16.9

    Dimension Tolerance for tee
    NOMINAL PIPE SIZE ALL FITTINGS ALL FITTINGS ALL FITTINGS ELBOWS AND TEES 180 DEG RETURN BENDS 180 DEG RETURN BENDS 180 DEG RETURN BENDS REDUCERS CAPS
    NPS O.D. at Bevel (1), (2) I.D. at End
    (1), (3), (4)    		 Wall Thickness (3) Centre-to-End Dimension A,B,C,M Centre-to-Centre O Back-to-Face K Alignment of Ends U Overall Length H Overall Length E
    ½ to 2½ 0.06
    -0.03    		 0.03 Not less than 87.5% of nominal thickness 0.06 0.25 0.25 0.03 0.06 0.12
    3 to 3 ½ 0.06 0.06 0.06 0.25 0.25 0.03 0.06 0.12
    4 0.06 0.06 0.06 0.25 0.25 0.03 0.06 0.12
    5 to 8 0.09
    -0.06    		 0.06 0.06 0.25 0.25 0.03 0.06 0.25
    10 to 18 0.16
    -0.12    		 0.12 0.09 0.38 0.25 0.06 0.09 0.25
    20 to 24 0.25
    -0.19    		 0.19 0.09 0.38 0.25 0.06 0.09 0.25
    26 to 30 0.25
    -0.19    		 0.19 0.12 … … … 0.19 0.38
    32 to 48 0.25
    -0.19    		 0.19 0.19 … … … 0.19 0.38
    NOMINAL PIPE SIZE NPS ANGULARITY TOLERANCES ANGULARITY TOLERANCES ALL DIMENSIONS ARE GIVEN IN INCHES. TOLERANCES ARE EQUAL PLUS AND MINUS EXCEPT AS NOTED.
    Off Angle Q Off Plane P (1) Out-of-round is the sum of absolute values of plus and minus tolerance.
    (2) This tolerance may not apply in localized areas of formed fittings where increased wall thickness is required to meet design requirements of ASME B16.9.
    (3) The inside diameter and the nominal wall thicknesses at ends are to be specified by the purchaser.
    (4) Unless otherwise specified by the purchaser, these tolerances apply to the nominal inside diameter, which equals the difference between the nominal outside diameter and twice the nominal wall thickness.
    ½ to 4 0.03 0.06
    5 to 8 0.06 0.12
    10 to 12 0.09 0.19
    14 to 16 0.09 0.25
    18 to 24 0.12 0.38
    26 to 30 0.19 0.38
    32 to 42 0.19 0.50
    44 to 48 0.18 0.75

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    • No.38 Yangzi Road Shanghai city China

    • Phone: +8618632758880

    • Email: sales@wilsonpipeline.com

    • Web: https://topsteelmill.com

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