Handrails can be found from the everyday handrail to completely custom. Here are a few examples.

These are Custom, Carved on Site Handrails Serving both as a Barrier to the Equipment area, and Handrails for the climb to the slide.
Here are some handrails leading up the slide on this custom Legendary Escape
Not wanting a “traditional” stainless rail, this custom rail allowed the rail to be formed and located exactly where it needed to be for a special needs grip/entry to the pool sun ledge.
Standard Stainelss P-Rail with Anchor Jig
4 Bend (Sometimes referred to as Commercial) P Rail Commonly seen in Hotel Spas – Anchor Jig
Example of creating a custom handrail using iron pipe on a staircase.