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ASME B16.11 Threaded 45° Elbows, Threaded 90° Elbows

2023-12-06 16:39:02 Hits:154 American Standards / Product Standards

ASME B16.11 threaded 45° elbows and threaded 90° elbows are critical components in high-pressure piping systems, providing threaded connections for changing the direction of pipelines at 45 and 90 degrees, respectively.Like other ASME B16.11 fittings, threaded 45° elbows and threaded 90° elbows are typically manufactured through forging. Forging involves shaping the material under high pressure to achieve the desired form and mechanical properties.

Threaded 45° elbows and threaded 90° elbows are manufactured from materials that conform to specifications outlined in relevant ASTM standards. Common materials include carbon steel, alloy steel, stainless steel, and other alloys suitable for high-pressure and high-temperature service.Threaded 45° elbow and threaded 90° elbows come in different pressure classes, such as 2000, 3000, 6000, and 9000. The pressure class indicates the maximum pressure that the elbows are designed to withstand.

ASME B16.11 Threaded 45° Elbows, Threaded 90° Elbows Dimensions:(Table 6.1-3)

ASME B16.11 Threaded 45 Degree Elbows and Threaded 90 Degree Elbows

ASME B16.11 Threaded 45 Degree Elbows and Threaded 90 Degree Elbows

Nominal Pipe Size Center-to-end Elbows, A Center-to-End 45 Degree Elbow, C Outside Diameter of Band, H Minimum Wall Thickness, G Minimum Length of Thread [Note(1)]
2000 3000 6000 2000 3000 6000 2000 3000 6000 2000 3000 6000 B L2
⅛ 21 21 25 17 17 19 22 22 25 3.18 3.18 6.35 6.4 6.7
¼ 21 25 28 17 19 22 22 25 33 3.18 3.30 6.60 8.1 10.2
⅜ 25 28 33 19 22 25 25 33 38 3.18 3.51 6.98 9.1 10.4
½ 28 33 38 22 25 28 33 38 46 3.18 4.09 8.15 10.9 13.6
¾ 33 38 44 25 28 33 38 46 56 3.18 4.32 8.53 12.7 13.9
1 38 44 51 28 33 35 46 56 62 3.68 4.98 9.93 14.7 17.3
1¼ 44 51 60 33 35 43 56 62 75 3.89 5.28 10.59 17.0 18.0
1½ 51 60 64 35 43 44 62 75 84 4.01 5.56 11.07 17.8 18.4
2 60 64 83 43 44 52 75 84 102 4.27 7.14 12.09 19.0 19.2
2½ 76 83 95 52 52 64 92 102 121 5.61 7.65 16.29 23.6 28.9
3 86 95 106 64 64 79 109 121 146 5.99 8.84 16.64 25.9 30.5
4 106 114 114 79 79 79 146 152 152 6.55 11.18 18.67 27.7 33.0

General Note: Dimensions are in millimeters.

Note (1): Dimension B is minimum length of perfect thread. The length of useful thread (B plus threads with fully formed roots and flat crests) shall not be less than L2 (effective length of external thread) required by ASME B1.20.1 (see 1.1 below).

ASME B16.11 Threaded 45° Elbows, Threaded 90° Elbows Dimensions:(Table 6.1-3C)

ASME B16.11 Threaded 45 Degree Elbows and Threaded 90 Degree Elbows

ASME B16.11 Threaded 45 Degree Elbows and Threaded 90 Degree Elbows

Nominal Pipe Size Center-to-end Elbows, A Center-to-End 45 Degree Elbow, C Outside Diameter of Band, H Minimum Wall Thickness, G Minimum Length of Thread [Note(1)]
2000 3000 6000 2000 3000 6000 2000 3000 6000 2000 3000 6000 B L2
⅛ 0.81 0.81 0.97 0.69 0.69 0.75 0.88 0.88 1.00 0.125 0.125 0.250 0.25 0.2639
¼ 0.81 0.97 1.12 0.69 0.75 0.88 0.88 1.00 1.31 0.125 0.130 0.260 0.32 0.4018
⅜ 0.97 1.12 1.31 0.75 0.88 1.00 1.00 1.31 1.50 0.125 0.138 0.275 0.36 0.4078
½ 1.12 1.31 1.50 0.88 1.00 1.12 1.31 1.50 1.81 0.125 0.161 0.321 0.43 0.5337
¾ 1.31 1.50 1.75 1.00 1.12 1.31 1.50 1.81 2.19 0.125 0.170 0.336 0.50 0.5457
1 1.50 1.75 2.00 1.12 1.31 1.38 1.81 2.19 2.44 0.145 0.196 0.391 0.58 0.6828
1¼ 1.75 2.00 2.38 1.31 1.38 1.69 2.19 2.44 2.97 0.153 0.208 0.417 0.67 0.7068
1½ 2.00 2.38 2.50 1.38 1.69 1.72 2.44 2.97 3.31 0.158 0.219 0.436 0.70 0.7235
2 2.38 2.50 3.25 1.69 1.72 2.06 2.97 3.31 4.00 0.168 0.281 0.476 0.75 0.7565
2½ 3.00 3.25 3.75 2.06 2.06 2.50 3.62 4.00 4.75 0.221 0.301 0.602 0.93 1.1380
3 3.38 3.75 4.19 2.50 2.50 3.12 4.31 4.75 5.75 0.236 0.348 0.655 1.02 1.2000
4 4.19 4.50 4.50 3.12 3.12 3.12 5.75 6.00 6.00 0.258 0.440 0.735 1.09 1.3000

General Note: Dimensions are in inches.
Note:(1)Dimension B is minimum length of perfect thread.The length of useful thread(B plus threads with fully formed roots and flat crests) shall not be less than L2 (effective length of external thread)required by ASME B1.20.1 (see 1.1 below).

1.1 Threaded Fittings

1.1.1 Wall Thickness.The body or end wall thickness of threaded fittings shall be equal to or greater than the minimum values,G,as shown in Tables.

1.1.2 Internal Threading.All fittings with internal threads shall be threaded with American National Standard Taper Pipe Threads (ASME B1.20.1).Variations in threading shall be limited to one turn large or one turn small from the gaging notch when using working gages.The reference point for gaging is the starting end of the fitting,provided the chamfer does not exceed the major diameter of the internal thread.

When a chamfer on the internal thread exceeds this limit,the reference point becomes the last thread scratch on the chamfer cone.

1.1.3 External Threads.All externally threaded fittings shall be threaded with American National Standard Taper Pipe Threads (ASME B1.20.1),and the variation in threading shall be limited to one turn large or one turn small from the gage face of ring when using working gages.The reference point for gaging is the end of the thread,provided the chamfer is not smaller than the minor diameter of the external thread.When a chamfer on the external thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.

1.1.4 Countersink or Chamfer.All internal threads shall be countersunk a distance not less than one-half the pitch of the thread at an angle of approximately 45 deg with the axis of the thread,and all external threads shall be chamfered at an angle of 30 deg to 45 deg from the axis,for easier entrance in making a joint and protection of the thread.Countersinking and chamfering shall be concentric with the threads.The length of threads specified in all tables shall be measured to include the countersink or chamfer.

Meanwhile,we manufacture & supply different types of threaded pipe fittings according to ASME B16.11 standard as follows:

Haihao Group manufacture & supply & export pipeline products more than 30 years,which contain butt welding pipe fittings(elbows,tees,reducers,caps,bends,crosses,etc),forged pipe fittings(socket weld/threaded elbows, tees, reducers, crosses, couplings, union, outlet, nipple, etc),steel pipes(seamless steel pipes, SAW/ERW steel pipes, casing and tubing pipes,etc) and forged flanges(weld neck flange, slip on flange, blind flange, lap joint flange, plate flange, threaded flange, socket weld flange, orifice flange, spectacle blind flange, weld overlay cladding flange,etc).We supply the products in different standards such as ANSI/ASME, ASTM, BS, EN, JIS, GOST, ISO, MSS, etc.If you want to know more about our pipeline products,please email us:sales@haihaogroup.com

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