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ASTM Q235 BUTT WELDING FITTINGS 90 DEGREE ELBOW

Classify,specification of a BW 90 degree elbow

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What is a 90 degree elbow?

The 90° pipe elbows is used to connect tubes at a 90° angle. As the name suggests, the elbow is always a right-angle in shape. Such type of elbow is also known as “90 bends or 90 ells”. This is a pipe fitting device which is bent in such a way to produce 90° change in the direction of flow of the fluid/gas in the pipe. The elbow is used to change the direction in piping and is also sometimes called a “quarter bend”.

Classify of elbows

Long Radius Elbow :
The most common is long radius (L.R.) elbow where the centre to face dimension (A) is always 1 ½ times the nominal pipe size of the elbow.
Short Radius Elbow :
In this case the centre dimension(A) is the same as the nominal pipe size of the elbow.
Extra Long Radius :
This is where the centre to face dimension is longer than the standard long radius type. The most common of these is where the centre to face dimension is three nominal size, i.e. 3D

Specification of 90 degree elbow

Size Range 1/2″ – 80″ / DN15 – 2000
Thickness Schedule SCH 10 – SCH 160, XXS
Bending Radius Long Radius (LR) and Short Radius (SR)
China Standard GB/T12459, GB/T13401, HG/T21635/21631, SH3408/3409
America Standard ANSI / ASME B16.9 / MSS SP 43
Japan Standard JIS B2311/2312/2313
Europe Standard EN10253
Carbon Steel Q235, 20#, 35#, 45#, 20G,ASTM A234 WPB/WPC
Low Temp Carbon Steel Q345B, 16Mn, ASTM A420 WPL6
Pipeline Steel ASTM A860 WPHY 42 / 46 / 56 / 60 / 65
Alloy Steel ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92,15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5
Stainless Steel ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347,904L
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