Vector Illustrations of water pipes

URGENT - First drafts are required by 11am tomorrow morning.

The job will be awarded to someone by 5pm today.

I am a graphic designer and need some illustrations doing for a brochure that I am working on.

There are five in total and the purpose is to show 5 scenarios of problems that occur when trying to connect two water pipes together.
I have attached sketches of what the scenarios are. The illustrations are pretty simple, but I need some 'depth' adding to them with rendering and shading.

1. Part of the exterior of the pipe is buried, or otherwise inaccessible
2. A pipe is sheared to a surface, and so is without a pipe stub
3. Connecting with a flat bottomed concrete pipe
4. Surface damage prevents a reliable external seal
5. (Sketch to be supplied) Creating a perfect seal around a spiral moulded plastic pipe

The illustrations MUST be supplied as scalable vector eps files. (I will not accept JPEG or any other format).

You must be able to supply examples of relevant work so that I can see your style.

UK bidders only - please do not waste your proposal credit if you are not based in the UK.

Thank you.