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**Lapped flanges** are essential components in modern industrial piping systems, offering a secure, leak-proof connection between two pipes or components. Engineered for durability and precision, these flanges are widely used in high-pressure and high-temperature environments. This article provides an in-depth exploration of **lapped flanges**, including their design, technical specifications, applications, and the company behind this innovative product, **HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD.**

Understanding Lapped Flanges

A **lapped flange** is a type of flange connection used in piping systems where two flanges are joined together with a gasket in between, creating a reliable seal. This design consists of two separate pieces: a flat flange and a raised flange, which are designed to overlap each other when joined. This unique structure allows for a higher tolerance for misalignment and provides a strong, leak-resistant seal, particularly in systems dealing with high-pressure or high-temperature environments.

**Lapped flanges** are commonly used in industries such as **oil and gas**, **petrochemical**, and **water treatment**, where ease of maintenance, leak prevention, and secure connections are critical. Their versatility and robust design make them ideal for applications requiring frequent disassembly and reassembly, such as in chemical processing plants or power generation facilities.

Key Features of Lapped Flanges

Our **lapped flanges** are meticulously engineered for superior sealing performance in demanding industrial applications. Constructed from high-grade materials such as **stainless steel**, **carbon steel**, and **alloy steel**, these flanges offer excellent resistance to corrosion and thermal expansion. The unique overlapping design ensures a tight, leak-proof connection, even under high-pressure and high-temperature conditions.

Key features include:

• Material Compatibility: Available in a range of materials including ASTM A105, P235GH, P245GH, and stainless steel grades like 304 and 306.
• Standards Compliance: Adheres to international standards such as ASME, EN, JIS, DIN, BS, and more.
• Surface Coating Options: Available in black paint, galvanize, grease, and epoxy paint for enhanced durability.
• Design Flexibility: Offers both concentric and eccentric configurations to accommodate varying system requirements.

Technical Specifications

Parameter	Details
PN/CLASS	PN6 - PN40 / Class150 - Class2500
DN/INCH	DN10 - DN2000 / ½In - 24In / S.A 12In - 60In
Materials	CS (ASTM A105, P235GH, P245GH, P250GH, P265GH, ST37-2) / SS (ASTM A182, 304, 306)
Standards	ASME, EN, JIS, DIN, BS, KS, GOST, SABS, ATK
Surface Coating	Black paint, Galvanize, Grease, Epoxy paint

Applications of Lapped Flanges

Our **lapped flanges** are widely used in various industries where reliable, leak-proof connections are essential. These flanges are commonly applied in high-pressure and high-temperature piping systems, such as in **oil and gas pipelines**, **petrochemical plants**, and **chemical processing industries**. Their unique design makes them ideal for situations where slight misalignments might occur, ensuring a tight seal even in challenging conditions.

Additional applications include:

• Water Treatment Facilities: Ensuring durability and secure fittings for water distribution systems.
• Power Plants: Providing robust connections for steam and water piping.
• HVAC Systems: Offering reliable performance in heating, ventilation, and air conditioning applications.

Types of Lapped Flanges

There are two primary types of **lapped flanges**: concentric and eccentric. Each type is designed to meet specific industrial needs.

Concentric Lapped Flange

This type features a centered alignment, with the flange faces being concentric. It is used in systems where precise alignment is essential, ensuring that the flow of fluid or gas is uniform. This type is commonly used in high-pressure systems and applications where a smooth and consistent seal is required.

Eccentric Lapped Flange

In an eccentric lapped flange, the flange faces are offset, meaning the center of the raised face does not align with the center of the pipe. This design helps in applications where a uniform flow of fluid is important, such as in systems that carry slurries or liquids with varying flow characteristics. The eccentric design also helps avoid air pockets and uneven flow in certain setups, making it ideal for specific piping arrangements where misalignments are common.

Company Background: HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD.

**HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD.** is a leading manufacturer of high-quality piping components, including **lapped flanges**. With a commitment to excellence, the company has established itself as a trusted supplier in the global market. Located in Hebei, China, the company leverages advanced manufacturing technologies and rigorous quality control processes to ensure that every product meets the highest industry standards.

HEBEI JIUYUAN's expertise in producing **lap joint flanges** and **flange lap joint stub ends** has made them a preferred choice for industries requiring durable and reliable piping solutions. Their products are designed to withstand the harshest environments, ensuring long-term performance and minimal maintenance.

Why Choose HEBEI JIUYUAN?

Several factors set **HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD.** apart from its competitors:

• Quality Assurance: The company adheres to strict quality control measures, ensuring that all products meet international standards.
• Customization: HEBEI JIUYUAN offers tailored solutions to meet the specific needs of clients, including custom materials and surface coatings.
• Global Reach: With a strong distribution network, the company serves clients worldwide, providing timely delivery and excellent customer service.

Industry Standards and Compliance

HEBEI JIUYUAN's **lapped flanges** comply with a wide range of international standards, ensuring compatibility with global piping systems. These standards include:

• ASME: American Society of Mechanical Engineers standards for piping components.
• EN: European Norms for flange design and manufacturing.
• DIN: German Industrial Norms for high-quality flanges.
• BS: British Standards for piping systems.

Compliance with these standards ensures that HEBEI JIUYUAN's products are suitable for use in diverse industrial applications, from petrochemical plants to water treatment facilities.

Expertise and Authority in Piping Solutions

According to the **National Institute of Standards and Technology (NIST)**, the importance of standardized measurements and materials in industrial applications cannot be overstated. NIST emphasizes that "precision in material specifications and adherence to established standards are critical for ensuring the safety and efficiency of industrial systems" (NIST, 2023). HEBEI JIUYUAN's commitment to compliance with international standards aligns with these principles, reinforcing their position as a trusted provider of **lapped flanges**.

Conclusion

**Lapped flanges** are indispensable components in modern industrial piping systems, offering a reliable, leak-proof connection that can withstand high-pressure and high-temperature environments. With their unique design, versatile applications, and compliance with international standards, HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD. provides a trusted solution for industries worldwide. Whether in oil and gas, petrochemical, or water treatment, **lapped flanges** from HEBEI JIUYUAN ensure secure, long-lasting performance.

References

NIST (National Institute of Standards and Technology): https://www.nist.gov/

HEBEI JIUYUAN PIPELINE MANUFACTURING CO., LTD.: https://www.hbjypipeline.com/lapped-flange.html

Keywords: lapped flange, lap joint flange, flange lap joint stub end