Technical Drawing - Piping Drawings - Discussion

Steel pipe is generally using for steam oil & gas services, but for water service generally GI, pvc or wrought iron pipe can use.

What is wrought iron?

GI?

What is GI, Wrought Iron?

GI is galvanized iron in which iron is protected from rust n other oxidation by providing a layer of zinc over the body.

Wrought iron is an alloy of iron in which carbon composition is (0.2-0.4%).

Steel pipes are compared to cast iron pipes have much greater strength, ductility and impact resistance. These pipes are used to carry water, steam, gas and sewage. Gas and steam in these pipes can be carried at high pressure.

Wrought-iron galvanized pipes are extensively used for carrying water and gas at low pressure for domestic purpose. These pipes are much lighter than cast iron pipes and can be easily threaded. Galvanized iron pipes are resistance to corrosion.

Why did not use copper pipe to water, steam, gas?

FRP is used for water because it doesn't contains corrosion, and for gases steel is used SS, CS... is used.

Copper can be used as well, but due to its high cost and availability of sizes in large diameters, it is not commonly used.

In water supply, we use PVC and shield 40. So everything we are using separate materials how you say c is right? Is there any particular reason, please explain.