Metal Flange Guard

Product Overview

LXHTR metal flange guards are manufactured from galvanized carbon steel, 304 stainless steel or 316L stainless steel, with optional 1mm or 2mm plate thickness depending on the working environment and protection requirements.

The guard is installed around the flange connection to help contain and redirect sudden leakage, spray or splashing caused by gasket failure, flange loosening or pressure fluctuation. Its rigid metal structure provides excellent resistance to heat, impact and mechanical damage, making it suitable for demanding industrial piping systems where soft flange guards may not provide enough protection.

Core Design Features

• High-Temperature Metal Construction — Made from galvanized carbon steel, 304 stainless steel or 316L stainless steel, the guard can be used in working environments from -50°C to 500°C.
• Strong Mechanical Protection — The rigid metal body helps protect personnel and nearby equipment from sudden flange leakage, hot liquid splashing, steam release or mechanical impact.
• Optional 1mm / 2mm Thickness — Different thickness options are available to balance strength, weight, cost and site installation requirements.

• Optional Drain Valve System — An optional drain valve can be added to safely channel leaked chemicals into a collection container, minimizing environmental contamination and simplifying leak management.
• High Impact Pressure Resistance — The 316L stainless steel version can be designed to withstand impact pressure up to 10 MPa, suitable for selected high-pressure flange protection applications.

Key Advantages

• Better Heat Resistance Than Plastic Guards — Metal flange guards are more suitable for high-temperature pipelines where PP, PVC or other plastic guards may soften, deform or age quickly.
• Stronger Than Fabric Guards — The metal structure provides better resistance to impact, abrasion and external mechanical damage, especially in heavy-duty industrial areas.
• Improved Safety Around Flange Connections — By covering the flange joint, the guard helps reduce direct exposure to sudden leakage, spray or splash, giving operators more time to identify and respond to leakage points.
• Long Service Life in Suitable Media — When selected correctly according to temperature, pressure, medium and environment, metal flange guards can provide long-term protective performance.

Technical Specifications

Standard Dimensions

LXHTR metal flange guards can be customized to fit various flange standards, pressure classes, valve assemblies, and special piping configurations.

Typical Applications

• Steam Pipelines — Suitable for flange protection on steam pipelines where high temperature and pressure may create safety risks during leakage.
• Hot Oil & Thermal Fluid Systems — Provides a strong protective barrier around flange joints carrying hot oil or thermal transfer fluids.
• Petrochemical & Refinery Plants — Used on process pipelines, utility pipelines and outdoor pipe racks where heat, pressure and mechanical protection are required.
• Heavy Industrial Plants — Ideal for metallurgy, mining, machinery, shipbuilding and other heavy-duty industrial areas where soft guards may be easily damaged.

Frequently Asked Questions

1. Is a metal flange guard suitable for acid and alkali pipelines?

Metal flange guards are not the first choice for strong acid or alkali applications. For corrosive chemical media, PTFE, PVC or PP flange guards are usually more suitable. Metal flange guards are mainly recommended for high-temperature, high-pressure, mechanical-impact or fire-risk environments.

2. What is the difference between galvanized carbon steel, 304 stainless steel and 316L stainless steel?

Galvanized carbon steel is a cost-effective option for general industrial use. 304 stainless steel provides better corrosion and weather resistance. 316L stainless steel offers higher corrosion resistance and is recommended for more demanding industrial environments.

3. Can the metal flange guard withstand high-pressure leakage?

The 316L stainless steel version can be designed with impact pressure resistance up to 10 MPa. However, the final performance depends on flange size, guard structure, material thickness and installation conditions.

4. Can a drain valve be added?

Yes. A drain outlet or drain valve can be added to guide leaked liquid to a safer direction or collection point, depending on the site requirements.