butt weld elbow bend
What is Elbow and Bend
Fittings that change direction in a piping system are called elbows. Pipe elbows are used to be installed between two lengths of pipe or tube allowing a change of direction,usually these elbows distinguished by connection ends.
The pipe bending is used to change the direction of run of pipe.It advantage is can matach long distance transition requirements,so it is commonly that bends dimension according to customer design
Elbows bends 45° – 90° – 180° LR/SR
The function of a elbow is to change direction or flow in a piping system. By default, there are 5 opportunities, the 45°, 90° and 180° elbows, all three in the “long radius” version, and in addition the 90° and 180° elbows both in the “short radius” version.
LR 90 Elbow: Long radius 90 degree elbow has the center line of elbow at 1.5 x NPS from eblow end. 3R elbow has center line at 3 x NPS from elbow end.
LR 45 Elbow: Long radius 45 degree elbow changes the direction by 45 degrees.
LR 180 degree Bend: Long Radius 180 degree return bend allows complete reversal of flow. The distance between end of elbow and center line is 3 x NPS.
SR90 Elbow: Short Radius 90 degree elbow is same as LR90 except for the measurement between end of elbow to center line is 1 x NPS.
SR 180 degree Bend: Short Radius 180 degree return bend allows complete reversal of flow but in a much tighter turn. The distance between end of elbow and center line is 1 x NPS.
|Type||Butt weld (BW) Radius: R=1D,1.5D 2D, 3D, 5D, 6D, 8D, 10D or Custom|
|Standards||ASME / ANSI – B 16.9 ‘Factory-Made Wrought Buttwelding Fittings’ASTM A234 - Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service.
ASTM A403 – ASME SA403 – ‘Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings’
ASME B16.25 – ‘Buttwelding Ends’
ASME B16.28 – ‘Wrought Steel Buttwelding Short Radius Elbows and Returns’
MSS SP-43 – ‘Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications’
|Dimension||ANSI B16.9, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2312, JIS B2313|
|Thickness||Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.|
|Size||1/2” TO 102”, (Seamless up to 32”),|
Materials and Grade
Carbon Steel :
ASTM A234 Gr. WPB
ASTM A420 Gr. WPL6/WPL3
EN10253-2 P235GH P265GH 16Mo3
DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404
Alloy steel :
ASTM A234 wp5 / wp9 / wp11 / wp22 / wp91
ASTM A860 WPHY42/WPHY52/WPHY60/WPHY65/WPHY70
MSS SP-75 WPHY42/WPHY52/WPHY60/WPHY65/WPHY70
ASTM A403 WP316/316L
ASTM A403 WP304/304L
Why choose us
BANGDONG PIPELINE is one of the leading Manufacturer, Stockist, and Exporter pipe elbows in China. We are ISO 9001:2015 certified company and most trusted suppliers of ANSI/ASME B16.9 90° Long Radius Elbow. We keep intensive stock of long radius 90 degree elbow to fulfil urgent requirements of our clients at reasonable prices.
The most common processes used for custom tube bending and custom pipe bending are ram, roll, mandrel bent, heat-induction, sand-packing and hot-slab forming. We uses several different types of custom tube bending and custom pipe bending methods, it is best known for its mandrel bent and heat-induction bends
How we manufactured pipe fittings: