ELBOW CENTER AND MITER ELBOW

ELBOW –

This is the fitting element used to divert the direction of line.  It is some time called bend . There are three types of elbow such as

  1. Standard elbow – in such elbow       R= 1.5 D
  2. Short radius elbow  - in such elbow R < 1.5 D
  3. Long radius elbow – In such elbow R > 1.5 D

Find out the elbow centre 

For 90° elbow = 38.1 x OD

For 45° elbow = 15.8 x OD

Formula for find out the elbow centre = tan (require degree/2) X radius

Let’s take an example of 90° elbow

= tan (90/2) x radius

= tan 45 x radius

Radius = 1.5 D

= tan 45 x 1.5 x 2

= 1”  X 1.5 X2

=1” X 3

=25.4 MM X 3

=76.2 MM

 

 

MITER ELBOW-

  The elbow we fabicated from pipe according to our required degree called miter elbow. For fabication of miter elbow  we have to use following formula

F1= tan(D/N X 2) X C X 2

F2= F1/2

Cut back = (tan(D/N X 2) X OD) / 2 

Here

D=  Required degree

N = Number of cut

C = Require radius of elbow center

OD = Pipe out side diameter

For example if we want to make miter elbow of 90 degree by using  10 inch pipe with following input.

D = 90 degree

N = 4 Cut

C = 381 ( as per standard elbow center radius)

OD = 273 mm

By using the upper formula the valve is

 

F1 = tan( 90/ 4 X2) X 381 X 2

   =   tan(11.25) X 381 X2

  = 0.1989 X 381 X 2

 = 151.6 mm

F2 = 151.6/2

   = 75.8 mm

Cut back = tan(90 / 4 X 2 ) X 273/2

                = 27.15 mm

 

ELBOW CENTER AND MITER ELBOW
ELBOW CENTER AND MITER ELBOW
ELBOW CENTER AND MITER ELBOW
ELBOW CENTER AND MITER ELBOW

TYPE OF NON DESTRUCTIVE TEST AND WHAT TYPE OF TEST TO BE CONDUCTED FOR PARTICULAR TYPE OF  DEFECT-CLICK HERE

 

TO  KNOW WHY WE USE ALLOY STEEL  AND WHAT IS BENEFIT OF ALLOY STEEL - CLICK HERE

 

TO KNOW ABOUT THE NATURE OF LOW TEMPERATURE CARBON STEEL AND WHERE IT IS USED -CLICK HERE

 

TO KNOW WHY WE NEED TO USE KILLED CARBON STEEL  AND WHAT IS KILLED CARBON STEEL- CLICK HERE

 

TO KNOW ABOUT CARBON STEEL - CLICK HERE

 

WHAT IS STAIN AND WHAT IS STAINLESS STEEL AND WHY STAINLESS STEEL CALL STAINLESS STEEL- CLICK HERE

TO KNOW ABOUT THE TYPE OF STAINLESS STEEL - CLICK HERE

TO KNOW ABOUT ELEMENT OF POST WELD HEAT TREATMENT AND DESCRIPTION OF EACH ELEMENT - CLICK HERE

 

 

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