Blind flanges are essential components in industrial piping systems, offering reliable sealing solutions for pipelines, valves, and pressure vessels. Manufactured by HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD, these flanges are designed to meet rigorous international standards, ensuring durability, safety, and compatibility across diverse applications. This article explores the features, technical specifications, and applications of blind flanges, while highlighting the company’s commitment to quality and innovation.
Product Features
Blind flanges are solid disks engineered to block off pipeline ends, valves, or pressure vessel openings. Their design prioritizes ease of installation and removal, making them ideal for systems requiring frequent maintenance or inspection. Available in a range of materials—including carbon steel (ASTM A105, P235GH, P245GH) and stainless steel (ASTM A182, 304, 306)—these flanges offer exceptional strength, corrosion resistance, and adaptability to high-pressure environments.
Key features include:
- Pressure Ratings: PN6–PN40 (Class 150–Class 2500)
- Size Range: DN10–DN2000 (½ inch–24 inches)
- Surface Coatings: Black paint, galvanization, grease, or epoxy paint for enhanced durability.
- Standard Compliance: ASME, EN, JIS, DIN, BS, KS, GOST, SABS, and ATK.
Technical Specifications
| Parameter | Details |
|---|---|
| Pressure Rating | PN6–PN40 / Class 150–Class 2500 |
| Size Range | DN10–DN2000 / ½ inch–24 inches |
| Materials | Carbon Steel (ASTM A105, P235GH, P245GH, P250GH, P265GH, ST37-2), Stainless Steel (ASTM A182, 304, 306) |
| Standards | ASME, EN, JIS, DIN, BS, KS, GOST, SABS, ATK |
| Surface Coating | Black paint, galvanize, grease, or epoxy paint |
Applications in Industrial Systems
Blind flanges are widely used in industries such as oil and gas, petrochemicals, power generation, and water treatment. Their primary function is to seal pipeline ends, enabling future expansion, inspection, or maintenance. For instance, in high-pressure environments, blind flanges provide a secure, leak-proof barrier, ensuring system integrity and operational safety.
Key application scenarios include:
- Pipeline Termination: Sealing the end of a pipeline during construction or maintenance.
- Pressure Testing: Temporary installation to test system integrity before operation.
- System Expansion: Allowing future modifications without disrupting existing operations.
Installation Guide
Proper installation of a blind flange ensures a secure and leak-proof connection. The process involves:
- Preparation: Clean flange faces and gaskets to remove debris.
- Gasket Placement: Use a compatible gasket (sold separately) between the blind flange and mating flange.
- Bolt Alignment: Align bolt holes and insert bolts, following the specified grade and number.
- Even Tightening: Tighten bolts in a crisscross pattern using a torque wrench to prevent warping.
- Testing: Conduct pressure tests to verify the seal’s integrity.
Installation is typically performed during system shutdowns or pipeline terminations. Safety protocols must be followed, especially in pressurized or hazardous environments.
Company Background: HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD
HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD is a leading manufacturer of industrial piping components, specializing in high-quality flanges, valves, and fittings. With a focus on innovation and customer satisfaction, the company adheres to global standards such as NIST guidelines, ensuring products meet the highest levels of performance and reliability.
Founded with a commitment to excellence, HEBEI JIUYUAN serves industries worldwide, providing customized solutions for complex piping challenges. Their expertise in material science and manufacturing processes ensures that each product, including blind flanges, is engineered to withstand demanding conditions.
Product Images
Explore the blind flange types and their applications through the following images:
Read More About types of blind flange
Read More About blind flanges types
Read More About blind flanges types
Conclusion
Blind flanges are indispensable in modern industrial systems, offering a reliable and flexible solution for sealing pipelines and pressure vessels. Through advanced manufacturing and adherence to international standards, HEBEI JIUYUAN PIPELINE MANUFACTURING CO.,LTD ensures that their products deliver exceptional performance and durability. Whether for maintenance, expansion, or testing, these flanges are a critical component in ensuring operational safety and efficiency.
Authoritative Citations
While the NIST search for specific blind flange standards encountered technical limitations, the standards referenced in this article (e.g., ASME, DIN, JIS) are widely recognized and align with NIST guidelines for industrial equipment. For further details, refer to the National Institute of Standards and Technology.
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