Stainless Steel Flanges｜How to Choose to Prevent Leaks and Extend Factory Service Life

Flanges are essential for preventing pipe leaks and improving system durability in factories such as chemical plants, power plants, and food factories. This article explains how to choose stainless steel flanges, select suitable materials, and apply correct installation techniques to minimize leakage and extend service life.
■ Basic design principles for leak prevention
The primary function of a flange is to prevent leaks. Selecting the right gasket and controlling surface contact pressure are crucial. Factors such as surface flatness, roughness, and proper torque values must be considered. For high-temperature applications, stainless steel grades like SUS304 or SUS316 — commonly used in Thai factories — are recommended for their heat and corrosion resistance.
■ Material and surface treatment
Stainless steel flanges are popular for their excellent corrosion resistance, making them ideal for food factories, chemical plants, and coastal facilities. Although carbon steel flanges are more affordable, they require protective coatings such as thermal spray, plating, or fluoropolymer to prevent rust and extend lifespan.
■ Proper tightening and torque management
Uniform tightening is critical to preventing leaks. Using a torque wrench and following a standard bolt sequence ensures even pressure distribution. Regular torque checks and adjustments help maintain sealing performance and reduce long-term maintenance risks.
■ Precautions before selecting flanges
When selecting a flange, always consider:
・ Operating pressure and temperature
・ Fluid type (water, steam, chemicals, etc.)
・ Wall thickness and pipe size
・ Installation environment (e.g., outdoor, near the sea)
・ Maintenance requirements and budget
Choosing the right flange improves system safety, prevents leaks, and reduces maintenance costs over time.
■ Why we recommend flange parts from Haneda (Thailand) Co., Ltd.
Haneda (Thailand) Co., Ltd. offers high-quality stainless steel flange parts designed to reduce leakage risks even under high-pressure and high-temperature conditions. With advanced manufacturing processes, precise sealing surface designs, and support from expert engineers, Haneda ensures reliable performance and long service life in factory environments.
Their extensive experience and commitment to product development make Haneda’s flange parts an excellent choice for factories seeking durability, safety, and cost efficiency.
■ For more information, please download the PDF or contact us anytime.
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