Coolant leaking from radiator hose?

Intially I thought my radiator hose pipe was leaking; but the local mechanic is unable to diagnose whether it is problem of radiator or coolant hose pipe. One mechanic told me to change the entire coolant auxiliary pipe kit because the pipes are swollen. Leakage starts once coolant pressure increases in the system. Please could you see the pipes' condition and I'm installing a new radiator anyway but do I need a new kit or only one pipe could fix the problem? I was unable find the exact pipe model number online please help me!