give me the design calculation and literature survey of manul hydraulic pipe bending machine ..plz

Introduction
Rapid Flow has designed and manufactured the highest quality machines for tube industry since 1979. Rapid machines have earned a good reputation worldwide. Rapid Tube bending machines can be used for economical, small batch to high volume mass production. The range includes Electrical & PLC (Single Axis) Tube Bending Machines. The machine has all production related features. We also supply tooling for the simple to most complex tube bending applications.
Features of Pipe Bending Machine
Cost effective & alternative to CNC bending.
High volume production machine avoiding manual power.
Produces wrinkle free, clean, repetitive bends.
Interchangeable set of tooling for each type of bend.
Operates at minimum working pressure for trouble free operation.
Memory Capacity : 50Programes with 11 Bends / Program.
Mitsubishi Control with HMI are installed to input data precisely
Applications of Pipe Bending Machines
Building construction (Windows, Trusses, Interior decoration)
Furnitures (Beds, Hospital equipments, Wheel chairs)
Automotive (Exhaust, Seat frames, Stabilizers)
Gymnasium Equipments- Baby Strollers
Chemical Plant- Petrochemical Plants
Material handling equipments
Stores display equipments
Cycle, Motorcycle frames
Electrical appliances
Refrigeration pipes
Irrigation systems
Boiler tubes
Sequence of Bending
Insert tube over mandrel
Grip end of tube with clamping die
Close pressure die
Select bending angle
Initiate bending electrically through PLC
Release both clamping and pressure die
Remove bent portion out of roller die
Proceed with next bend