중급 배관용 슬립온 플랫 용접 플랜지

산업용 배관의 세계에서, 비용 효율적이고 효율적인 솔루션은 필수적입니다. 특히 압력과 온도 조건이 적당한 시스템에서는 더욱 그렇습니다.. 다양한 플랜지 옵션 중, 그만큼 flat welding flange (also known as a slip-on flange) stands out as a practical and economical choice for low-pressure pipeline systems.

This article explores the advantages, technical features, 애플리케이션, installation methods, and material options of flat welding flanges. Whether you’re a pipeline contractor, engineer, or procurement specialist, this guide will help you understand why flat welding flanges are a popular option in industries such as water treatment, 공조, 석유화학, and general construction.

What Is a Flat Welding Flange?

에이 flat welding flange is a type of pipe flange that slides over the pipe and is then fillet welded on both the inside and outside to provide strength and leak-tightness. 웰드 넥 플랜지와 달리, flat welding flanges do not have a hub and are ideal for applications where pressure is relatively low and where space and budget constraints matter.

Standard references include:

ASME B16.5 – For pipe flanges and flanged fittings
EN 1092-1 유형 01 또는 02 – For European specifications
JIS B2220 – For Japanese standard flanges

SASAFLANGE manufactures flat welding flanges in a variety of sizes and materials to meet international standards and project specifications.

Design Features of Flat Welding Flanges

Bore size: Slightly larger than the pipe outer diameter to allow easy insertion
올려진 얼굴 (RF) or flat face (FF): Options depending on sealing needs
No long tapered hub: Compact and lightweight
Fillet welds: Applied on both sides to secure the pipe
볼트 구멍: Equally spaced to match standard bolt patterns

The simple geometry and easy alignment make flat welding flanges suitable for quick assembly, 수리하다, and field modifications.

Advantages of Flat Welding Flanges

1. Cost-Effective Solution

Flat welding flanges are more affordable than weld neck flanges due to:

Less material used
Easier machining
Faster installation time
Lower welding complexity

This makes them ideal for budget-sensitive projects and large-scale piping networks.

2. Easy Installation and Alignment

These flanges are easier to align with pipes during welding. 그들의 slip-on design accommodates minor misalignment and allows quick positioning.

Saves labor time
Reduces risk of installation errors
No need for complex beveling as with butt-weld connections

3. Lightweight and Space-Saving

The absence of a hub reduces the overall weight and space requirement, making them suitable for:

Compact equipment layouts
Lightweight supports
Skid-mounted systems

4. Versatility in Applications

Flat welding flanges can be used for:

Fluids (물, 공기, 기름)
Low-pressure steam
Non-hazardous gases
Non-corrosive liquids

They are common in non-critical systems that don’t require high structural strength.

5. Wide Availability and Customization

Flat welding flanges are widely produced and available in:

압력 등급: 150#, 300#, PN10, PN16
크기: DN15 to DN2000
Facing types: RF, FF, and RTJ
재료: 탄소강, 스테인레스 스틸, 합금강

SASAFLANGE offers quick delivery of standard and customized flat welding flanges for global projects.

Typical Applications of Flat Welding Flanges

● Water Supply and Drainage

Used in municipal pipelines, 펌프장, and wastewater treatment plants due to corrosion-resistant coatings and simple connections.

● HVAC 시스템

Flat welding flanges are ideal for air conditioning and heating pipelines, offering quick on-site adjustments and tight seals.

● 화학 및 석유화학 플랜트

Applied in non-critical service pipelines carrying mild chemicals, 용매, or low-pressure steam.

● 식품 및 음료 가공

When made from stainless steel, flat welding flanges are used in hygienic piping for beverages, dairy, and brewing.

● Power Plants and Energy Facilities

Applied in auxiliary systems such as cooling water, low-pressure return lines, and drainage networks.

Installation Procedure

Installing a flat welding flange requires the following steps:

Pipe Preparation
- Cut the pipe to the required length
- Clean the pipe end to remove oil, 흙, or burrs
Flange Placement
- Slide the flange over the pipe end
- Align the bolt holes with mating flange or template
용접
- Perform a fillet weld on the inner side of the pipe end
- Follow with an outer fillet weld around the flange face
Gasket Insertion and Bolt Tightening
- Place the gasket (spiral wound, 고무, 등.)
- Insert bolts and tighten in a cross-pattern using a torque wrench
- Follow appropriate torque sequence to ensure uniform pressure
Testing and Inspection
- Conduct hydrostatic or pneumatic testing to check for leaks
- Visually inspect welds for quality and completeness

SASAFLANGE supplies flanges with precision machining, making installation smooth and consistent.

재료 옵션

Flat welding flanges are manufactured in a variety of materials, 포함:

탄소강 (ASTM A105, EN P245GH): Affordable and strong for general use
스테인레스 스틸 (304, 316, 321): Corrosion-resistant for chemical and food applications
합금강 (F11, F22): Used in moderate temperature and pressure environments
듀플렉스 스테인레스 스틸: Offers superior strength and corrosion resistance
니켈 합금: For specialized systems requiring chemical resistance

Surface treatments may include:

Galvanizing
Epoxy coating
패시베이션
Pickling and polishing

SASAFLANGE offers material traceability, EN10204 3.1 인증서, and special coatings upon request.

Pressure Ratings and Standards

Flat welding flanges are designed for low to moderate pressure applications:

ASME B16.5 Classes: 150#, 300#
EN 1092-1 Pressure Classes: PN6, PN10, PN16
JIS B2220 Classes: 5케이, 10케이, 16케이

Always select the correct pressure class and material based on system pressure, 온도, 그리고 액체형.

Inspection and Quality Control

To ensure safety and performance, all flat welding flanges must undergo:

치수검사
재료 검증 (PMI)
Flatness and facing finish check (라 ≤ 3.2 µm)
Bolt hole alignment
Visual inspection of welds (if factory-welded)
Hydro or air leak testing if assembled

SASAFLANGE maintains ISO 9001-certified quality systems and third-party inspection cooperation (SGS, BV, TUV).

Why Choose sasaflange?

SASAFLANGE is a professional flange manufacturer serving global customers in energy, 석유화학, 물, 및 인프라 프로젝트. Key advantages include:

Full range of flat welding flanges in ASME, EN, DIN, JIS, and GOST standards
Manufacturing in stainless steel, 탄소강, 및 특수 합금
CNC 가공, 표면 마무리, and drilling
3.1/3.2 certified quality control and fast export support
Custom sizes, 코팅, and gasket kits available

For budget-conscious projects or low-pressure pipelines, SASAFLANGE delivers reliable flanged solutions with fast turnaround.

결론

Flat welding flanges are a smart and economical solution for low-pressure pipeline systems across a wide range of industries. Their ease of installation, cost efficiency, and flexibility make them ideal for non-critical yet essential piping applications.

By sourcing high-quality flat welding flanges from SASAFLANGE, customers benefit from certified materials, international compliance, and expert support—ensuring the success of every pipeline project.