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ASTM A234 WPB 45 Degree Butt Welding Elbow ASME B 16.9

45 degree BW tee’s specification and advantages in pipe system.

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What is a butt welding 45 degree elbow?

45° Pipe Elbow is also known as “45 bends or 45 ells”. The 45° pipe elbow is used to connect tubes at a 45° pipe angle. As the name suggests, this is a pipe fitting device which is bent in such a way to produce 45° change in the direction of flow of the fluid/gas in the pipe.Like a 90° elbow, the 45° pipe elbow also attaches readily to pipes of various materials like plastic, copper, cast iron, steel, lead, rubber etc. They are typically made as LR (Long Radius) elbows. These types of elbows are available in various sizes (in mm or inches). They are available with different male to female BSP thread connections. Providing a wide choice of colors, these 45° elbows can be manufactured to meet different specifications, in terms of size and diameter.


Specification of BW 45 degree elbow

Size Range 1/2″- 80″ / DN15 – 2000
Thickness Schedule SCH 10 – SCH 160, XXS
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
Germany Standard DIN2605/2615/2616/2617
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

Advantages of BW  elbow

Comparing to other types of steel pipe fittings,butt welding pipe fittings has advantages:

1.Butt welding joint is permanently leakproof and strong.

2.Continuous steel structure of the joints between the pipes and fittings have a good strength in the piping system.

3.The butt welding pipe fittings commonly have a smooth surface and gradual directional changes,it will decrease the pressure losses and turblence of the system,and protect from the corrosion and erosion.

4.The butt welding pipe fittings have a lower cost in bugdet.

5.The butt welding joints have a smaller space in the system.


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