スリップオンフランジとは何ですか?

産業用配管システムにおいて, 適切なフランジを選択することは安全性を確保するために不可欠です, 耐久性のある, コスト効率の高い接続. たくさんの種類がある中で, の スリップオンフランジ is one of the most commonly used due to its simplicity, 手頃な価格, and ease of installation. It is a popular choice for systems operating under moderate pressure and temperature conditions.

This article provides a detailed explanation of what a スリップオンフランジは, how it is constructed, its benefits, 一般的なアプリケーション, and why it is favored in many industries. Whether you’re involved in pipeline design, plant maintenance, or equipment manufacturing, understanding the function and value of slip-on flanges is key to making informed decisions.

Definition of a Slip-On Flange

あ スリップオンフランジ, と略されることが多い SO flange, is a type of flange that is slipped over the pipe before being welded into place. Unlike weld neck flanges, which require precise alignment and butt welding, slip-on flanges are easier to position and align, making them ideal for quick and efficient installations.

The slip-on flange is typically attached to the pipe with two fillet welds — one on the inside and one on the outside of the flange — providing a strong and stable connection suitable for low to moderate pressure systems.

構造上の特徴

Slip-on flanges have a simple design that consists of the following elements:

あ flat face or raised face to accommodate gasket sealing
あ slightly larger inner diameter than the pipe’s outer diameter, allowing the pipe to pass through
ボルト穴 arranged around the circumference for connecting to other flanges or equipment

で ササフランジ, we offer slip-on flanges in a wide range of sizes and materials that comply with international standards such as ASME B16.5, EN 1092-1, and API specifications.

Advantages of Slip-On Flanges

Slip-on flanges are widely used due to their many advantages, especially in non-critical applications:

1. 簡単な取り付け

Their design allows the pipe to simply slip through the flange opening. This makes alignment much easier and faster than with flanges that require butt welding.

2. Lower Cost

Slip-on flanges typically cost less to manufacture and install. The welding process is less complex and time-consuming, reducing labor costs.

3. 多用途性

These flanges can be used with both pipes and tubing and are suitable for a variety of fluid systems including air, 水, 油, and gas.

4. コンパクトなデザイン

Slip-on flanges have a shorter overall profile compared to weld neck flanges, making them suitable for systems where space is limited.

5. Available in Multiple Pressure Ratings

Although best for low to medium pressure, slip-on flanges are available in pressure classes ranging from クラス 150 クラスへ 600.

一般的なアプリケーション

スリップオンフランジ are widely used in a variety of industries, especially where pressure and thermal cycling are moderate:

Water treatment and distribution systems
HVAC and mechanical piping
Oil and gas utilities (non-critical lines)
Food and beverage processing
Chemical and pharmaceutical plants
Firefighting systems and compressed air lines

で ササフランジ, we supply slip-on flanges to support global clients in construction, mechanical contracting, and utility infrastructure.

Materials and Standards

スリップオンフランジ are available in a variety of materials to meet different operating environments:

炭素鋼 for general use
ステンレス鋼 for corrosion-resistant applications
合金鋼 for higher temperature or pressure resistance
二相ステンレス鋼 for critical environments like offshore installations

Each material type meets international standards, ensuring compatibility and performance reliability across multiple industries.

Slip-On Flange vs Other Flange Types

To understand where slip-on flanges fit into the larger picture, let’s compare them to other common flange types:

Slip-On vs Weld Neck: Slip-on flanges are easier and cheaper to install but offer less strength and sealing capability compared to weld neck flanges
Slip-On vs Socket Weld: Socket weld flanges are better for small diameter pipes and high pressure; slip-ons are more versatile for general applications
Slip-On vs Blind Flanges: Blind flanges are used to close pipe ends, while slip-ons are used for pipe-to-pipe or pipe-to-equipment connections

Each flange type has its own strengths, but slip-on flanges remain a go-to option for systems that balance performance with economy.

設置ガイドライン

Proper installation is essential to ensure the effectiveness and safety of a slip-on flange. The steps generally include:

Slide the flange over the pipe end
Position the flange at the desired location
Perform two fillet welds — one inside and one outside the flange
Bolt the flange to its mating pair with a gasket in between

While installation is simpler than with other flange types, proper welding and gasket selection remain crucial for system reliability.

結論

の スリップオンフランジ is a cost-effective, versatile, and easy-to-install solution for piping systems that operate under moderate pressure and temperature conditions. Its straightforward design and simple welding process make it a preferred choice in many industries for non-critical applications.

Whether you are planning a new piping system or upgrading existing infrastructure, the slip-on flange offers an efficient balance of パフォーマンス, 手頃な価格, and simplicity.

For high-quality slip-on flanges manufactured to meet international standards, に向かう ササフランジ — your trusted source for precision-engineered flange products built for long-term performance and reliability.