Material suitability — Is it correct to say copper tubing is not suitable for process work, plumbing, or heating systems, or is copper actually widely used across these applications when properly specified?

Introduction / Context:
Copper tubing is a long-standing material in building services and light process applications. Its mechanical properties, corrosion resistance for many fluids, and reliable joining methods make it a frequent choice for potable water, hydronic heating, refrigeration, and certain process utilities. The statement suggests copper is not suitable, which contradicts common practice.

Given Data / Assumptions:

• Applications considered: plumbing (hot/cold water), heating (hydronic), and selected process services.
• Joining methods: soldered/brazed capillary joints, press-fit systems, and flared fittings where applicable.
• Limitations recognized: specific corrosive media or very high pressures/temperatures may require other materials.

Concept / Approach:
Material suitability depends on service conditions. For many building services, copper offers durability, cleanliness, and ease of installation. Codes and standards provide guidance on allowable services, pressure ratings, and jointing practices. Therefore, a blanket claim of unsuitability is wrong; copper is widely accepted when specified to the correct type, temper, and joining method.

Step-by-Step Solution:
1) Identify target uses: plumbing and heating—copper is commonplace.2) Consider process work: copper is used for certain gases, air, and moderate fluids; compatibility checks apply.3) Confirm joining and rating standards support these uses.4) Conclude the statement is incorrect.

Verification / Alternative check:
Typical specifications and trade manuals list copper tube types (e.g., K, L, M) with pressure/temperature ranges and joining methods for domestic water and hydronic systems; refrigeration copper is standard in HVACR pipelines.

Why Other Options Are Wrong:

• Correct: Not true; copper is suitable in many systems.
• Unsuitable for potable/hydronic/without threads claims: These contradict code-accepted practices; soldering, brazing, and press systems are standard.

Common Pitfalls:
Ignoring water chemistry and dezincification in certain fittings; using the wrong flux or overheating joints; not accounting for thermal expansion anchors and guides; misapplying copper in highly corrosive process streams.

Final Answer:
Incorrect