Here are the basic steps to install fire sprinkler pipe:

1. Plan the pipe layout: Determine the optimal routing of the pipes based on the building layout and fire code requirements.  1 fire sprinkler pipe  This includes identifying the locations of sprinkler heads, valves, and other components.

2. Obtain the necessary permits: Check with your local fire department or building authority to ensure you have the proper permits to install the fire sprinkler system.

3. Select the right pipe materials: Typically, fire sprinkler pipes are made of steel, copper, or CPVC. Choose the material that meets local code requirements.

4. Cut and prepare the pipe: Use a pipe cutter to accurately measure and cut the pipes to the required lengths. Deburr the ends and ensure they are clean.

5. Lay out the pipes: Position the pipes along the planned routing, securing them in place temporarily using hangers or supports.

6. Join the pipes: Use appropriate fittings and joining methods, such as threaded connections, grooved couplings, or solvent welding, depending on the pipe material.

7. Install valves and accessories: Add isolation valves, test connections, drain valves, and other required components per the system design.

8. Secure the pipes: Permanently attach the pipes to the building structure using hangers, brackets, or other supports at the required intervals.

9. Test the system: Perform hydrostatic tests and any other required inspections to ensure the sprinkler system is functioning properly and meets code requirements.

10. Obtain final approval: Work with the local fire department or building authority to get the final inspection and approval for the installed fire sprinkler system.

It's important to follow all local building codes and manufacturer instructions carefully when installing a fire sprinkler system. Consulting with a licensed fire protection contractor is recommended for complex installations.