All

All
Product
News
FAQ
Video Demo

This is placeholder text.

Your inquiry cart is empty. Go add products now!

News

Stay up to date with the latest news, industry insights, and technical updates from Forante.

全部分类 



Company News

Industry Insights

Technical Articles

Home

2026

08-17

The Hidden Cost of Compressed Air Systems: It May Be in the Piping

Compressed air is often described as the “fourth utility” in industrial manufacturing, after electricity, water, and gas. Yet once this valuable compressed air leaves the air receiver and travels through seemingly ordinary pipes, it may begin to suffer from a silent loss of energy and efficiency.

Author:

Franta

Views:

An Overlooked Reality

　　Walk into the compressed air room of many factories and you may notice a puzzling situation: the air compressors and dryers are leading global brands, and the investment in air treatment equipment can easily reach hundreds of thousands of yuan, yet the piping connecting these systems is often still galvanized steel. It is like connecting a precision-engineered heart to a “blood vessel” that is already beginning to rust.

　　The piping system plays a critical role in determining the quality and efficiency of compressed air delivered to the point of use.

The Corrosion Risk of Galvanized Piping

　　Many factories choose galvanized steel pipes for a simple reason: lower initial procurement costs and acceptable pressure resistance. However, this focus on upfront cost can create significant hidden risks for long-term operating expenses.

　　· Risk 1: The Zinc Coating Delays Corrosion, but Does Not Eliminate It

　　Galvanized steel pipes are essentially still iron-based materials, with a zinc coating typically only 50-80μm thick. Impacts during installation and friction from threaded connections can damage this protective layer. Once the zinc coating is compromised, the exposed steel substrate reacts with moisture and oxygen in compressed air, resulting in rust formation.

　　· Risk 2: Corrosion Reduces Pipe Diameter and Increases Pressure Drop

　　Rust accumulates on the inner pipe wall, progressively reducing the effective internal diameter and increasing flow resistance. One potential consequence is an increase in pressure drop of around 0.5 bar.

　　· Risk 3: End-Use Air Quality Becomes Difficult to Guarantee

　　Rust particles and contaminants can travel with the compressed air and eventually reach downstream equipment. Pneumatic valves may become stuck, painted surfaces may develop defects, laser cutting heads may become contaminated, and precision equipment may trigger alarms or shut down. The root cause of these problems may be hidden inside corroded piping.

What Does a 0.5-Bar Pressure Drop Really Cost?

　　Pressure drop is not just a number. It translates directly into operating costs.

　　For every 1 bar increase in operating pressure, compressor energy consumption may increase by approximately 7%. Taking a 75 kW air compressor as an example, if pipe corrosion causes a 0.5-bar pressure drop, with 8,000 operating hours per year and an industrial electricity price of RMB 0.8 per kWh:

　　0.5 bar × 7% × 75 kW × 8000 h × RMB 0.8/kWh = RMB 16,800/year

　　That is only the additional electricity cost for one air compressor. What happens if a factory has five or ten compressors? This “hidden electricity cost” can be silently consumed by corroded piping year after year.

　　Even more importantly, galvanized steel piping typically has a service life of only 5-8 years, and in humid environments it may require replacement after just 3-5 years. Every replacement can bring a combination of production downtime, labor costs, and material expenses.

Stainless Steel Piping Is Becoming the New Standard

　　This is not to dismiss the historical role of galvanized steel piping. For many years, galvanized steel was a mainstream choice for industrial piping. But advances in technology have provided better alternatives.

　　Stainless steel piping is becoming an increasingly preferred solution for compressed air systems. Compared with galvanized steel, stainless steel offers several key advantages:

Franta’s Answer: A Complete Stainless Steel Compressed Air Piping Solution

　　Since introducing proven German technology in 2004, Franta has focused on developing multiple stainless steel pipe connection methods, including press-fit, welded, and flanged connections. With more than 20 years of experience in stainless steel piping, the company holds authoritative German DVGW certification for gas and drinking water applications and has received recognition as a High-Tech Enterprise and a Specialized and Innovative Enterprise. Franta has also obtained ISO intellectual property management system certification, after-sales service management maturity certification, and measurement management system certification. The company holds a special equipment production license, while its stainless steel raw materials are supported by food-grade safety testing reports.

　　Today, Franta stainless steel piping systems are used across industrial applications such as compressed air piping, as well as commercial real estate, residential real estate, public buildings, municipal water utilities, gas transmission, and other sectors. More than 10,000 stainless steel piping system projects have been implemented to date.

　　What we provide is more than piping. We provide a complete compressed air piping system solution — from system planning and design to installation, testing, and commissioning, every stage is implemented to high standards.

Why Stainless Steel Is the Preferred Choice for Industrial Gas Piping

Why Franta Uses Double Solution Heat Treatment for Stainless Steel Fittings