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Steel Elbow

 Pipe Elbow

Elbow Size : 1/2' up to 36 " dia
Elbow Material : S.S and C.S
Elbow angle : 45, 90 , 120 and 180 degree

To access Standard ASME B16.9 please click here

Elbow is an important parts in plumbing pipeline systems and used to change the fluid directions. It ranges in different types as per body material there are stainless steel elbow, carbon steel elbow, and alloy steel; As per fluid directions there are 45 degree , 90 degree elbow and 180 degree; As per elbow length and radius there are short radius elbow (SR elbow) and long radius elbow (LR elbow); As per connections types there are butt weld elbow, socket weld elbow and threaded steel piping elbow.n simple terms, steel pipe elbow is a type of pipe fitting connected between two pipes. The main purpose is to change the course of direction. As we know, steel elbow can be classified into different degrees, normally is 45 degree steel pipe elbow, 90 degree steel pipe elbow and 180 degree steel pipe elbow. Other degree like 60° or 120° also used in pipeline systems in case special requirements.

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Types of Elbow according to fitting method:

​Butt weld:

The easiest way to connect the elbow and pipe is to do welding directly to the elbow ends with pipe ends, where we called butt to butt weld (BW Elbow, as showed in above
picture). Butt weld elbow mainly used in a higher pressure and temperature than the other connection types of elbow. (Than socket weld elbow or the threaded piping elbow)

Socket weld:

Socket weld elbow also connected with ends welding, different with BW elbow is: Socket weld elbow ends has a ladder shaped area, which we can insert the pipe ends to this
area (SW elbow ladder diameter fit with pipe outer diameter), after inserting do the welding work to joint them together.
Threaded Elbow:
Similar shape with SW elbow, different is ladder area inner surface has been machined to threads, it makes more easy to install and un-install. Which is good for the pipeline repair and maintenance.
Reducer Elbow:
Also known as decreasing elbow, is a kind of pipe which applied when both the elbow and closures are different in size. It’s often used so that different sizes of the pipes could be easily distinguished in order to make noteworthy turns.

 Material for Elbow:

Stainless steel elbow : Material in stainless (Added Cr and Ni chemicals in carbon steel), standards and grades commonly in ASTM A403 WP 304/304L, 316/316L, ASTM A270 etc. It has higher strength and higher corrosion-resistances than carbon steel elbow.

Material in carbon steel, referred standards as
ASTM 234 WPB and WPC
MSS-SP-75 WPHY 42, 46, 52, 56, 60, 65 and 70

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