Replacing water pipes from main supply

[kaacu123]

Found a leak at the rusted water pipe, like a pin hole size.

I've done digging today and found it's a curved pipe.

Is it available at Bunnings? Do I have a assemble a few pieces and what connectors are needed? 

[kaacu123]

Hi @Noyade I think my property is like 1980s. Fixed by plumber replacing the tee and stand pipe witha a copper one.. Also filled with rock and sand hopefully it can last for another decade....