P cone , D cone , Butterfly (B) form tie and tie bar use in form work in construction.
![B cone , B form tie , D cone use in construction](http://www.basiccivilengineering.com/wp-content/uploads/2015/04/561427077_302.jpg)
B cone , B form tie , D cone use in construction
Where to use ? see image below
![Butterfly form tie used in column formwork](http://www.basiccivilengineering.com/wp-content/uploads/2015/04/IMG_0842.jpg)
Butterfly form tie used in column formwork
B cone , B form tie , D cone use in construction
Butterfly form tie used in column formwork
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