BS4504 Flat Flanges

Engineered for Reliable and Efficient Pipeline Connections

BS4504 Flat Flanges are manufactured in accordance with the BS 4504 standard, providing secure and reliable connections for low- to medium-pressure piping systems. Featuring a flat sealing face, these flanges are designed to distribute gasket compression evenly, ensuring dependable sealing performance while minimizing stress on connected equipment. They are widely used in water supply, industrial processing, HVAC systems, and general engineering applications where safe and leak-free connections are essential.

High-Quality Materials and Precision Manufacturing

Our BS4504 Flat Flanges are produced from premium carbon steel, stainless steel, alloy steel, duplex stainless steel, and other specialized materials to accommodate a wide range of operating environments. Advanced forging, precision CNC machining, and controlled heat treatment processes ensure excellent mechanical strength, dimensional accuracy, and smooth sealing surfaces. Every flange is manufactured in strict compliance with BS4504 dimensional requirements and undergoes comprehensive inspections before delivery.

Excellent Strength and Corrosion Resistance

Designed for long-term industrial service, BS4504 Flat Flanges offer excellent resistance to pressure, corrosion, temperature fluctuations, and mechanical loading. Their flat-face design provides uniform gasket compression, reducing the possibility of leakage and extending gasket service life. Depending on the application, additional surface treatments such as hot-dip galvanizing, epoxy coating, anti-rust oil, or specialized protective coatings are available to improve corrosion resistance in demanding environments.

Comprehensive Size and Pressure Options

Our BS4504 Flat Flanges are available in a wide range of DN sizes, with pressure ratings including PN6, PN10, PN16, PN25, and PN40 to meet various pipeline requirements. Different bore dimensions, drilling configurations, and flange thicknesses are available according to standard specifications. Customized dimensions, special materials, machining services, and surface finishes can also be supplied based on customer drawings or project requirements.

Versatile Applications Across Multiple Industries

BS4504 Flat Flanges are widely used in water treatment plants, municipal water supply systems, wastewater facilities, chemical processing, oil and gas pipelines, power generation, marine engineering, HVAC installations, food processing, pharmaceutical manufacturing, and general industrial piping systems. Their reliable sealing performance and compatibility with standardized piping components make them an ideal choice for both new installations and maintenance projects.

Strict Quality Control and Inspection

Every BS4504 Flat Flange is subjected to rigorous quality control throughout the manufacturing process. Raw material verification, chemical composition analysis, mechanical property testing, dimensional inspection, hardness testing, non-destructive testing (NDT), surface quality inspection, and final visual examination are performed to ensure compliance with international quality standards and customer specifications. This comprehensive inspection process guarantees consistent product quality and dependable field performance.

OEM Manufacturing and Global Supply

We provide OEM and customized manufacturing services to meet the requirements of distributors, EPC contractors, and industrial end users worldwide. Customized materials, dimensions, pressure ratings, coatings, laser marking, packaging, and third-party inspection services are available upon request. Supported by modern production facilities, experienced technical teams, and efficient global logistics, we deliver high-quality BS4504 Flat Flanges that provide reliable performance, consistent quality, and timely delivery for international projects.