Grooved Flange

Superior Leak-Proof Sealing Performance

The integrated "groove + gasket + locking ring" sealing system creates a triple sealing effect. The precision-machined groove profile ensures tight compression of the gasket (EPDM, nitrile, or fluoropolymer), forming a reliable seal that resists leakage even under vibration, pressure fluctuations, or temperature changes. With a leak-proof success rate of over 99% in standard operating conditions, it is suitable for critical applications involving water, gas, oil, or corrosive media.

Exceptional Vibration & Shock Resistance The flexible connection design of grooved flanges allows for slight axial and angular displacement (up to ±3°), effectively absorbing pipeline vibration and thermal expansion/contraction. This reduces stress on the pipeline system and equipment joints, minimizing the risk of loosening or damage caused by mechanical shock or seismic activity. It is particularly reliable for HVAC systems, industrial pumps, or marine pipelines prone to vibration.

Corrosion & Wear Resistance

Available in premium materials such as 304/316 stainless steel, carbon steel with galvanized/epoxy coating, or ductile iron, grooved flanges offer strong resistance to corrosion, rust, and chemical erosion. The surface treatment (hot-dip galvanizing, passivation, or epoxy coating) enhances durability in harsh environments like humid areas, chemical plants, or marine engineering. The service life is extended by 50%-80% compared to uncoated flanges, reducing replacement and maintenance costs.

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Product Details

Overview

Grooved Flange (also known as Grooved End Flange) is a revolutionary pipeline connection component designed for mechanical locking, featuring a grooved end structure that pairs with grooved pipes, gaskets, and locking rings. It eliminates the need for on-site welding or complex threading, offering rapid installation, reliable sealing, and exceptional adaptability. Compliant with global standards, our grooved flanges are engineered with premium materials and precision machining to meet the demands of diverse industrial, commercial, and infrastructure applications—from fire protection systems to industrial pipelines.

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Material Type	Grade Examples	Key Properties	Application Scenarios
Carbon Steel	A105, Q235B, 20#	High strength, cost-effective, good weldability	General industrial pipelines, water supply/drainage
Stainless Steel	304, 316, 316L	Corrosion-resistant, oxidation-resistant	Chemical processing, food & beverage, marine engineering
Ductile Iron	D400, D500	High toughness, wear-resistant, cost-effective	Fire protection systems, municipal pipelines
Galvanized Carbon Steel	Hot-dip galvanized A105/Q235B	Enhanced corrosion resistance	Outdoor pipelines, humid environments
Epoxy-Coated Steel	Epoxy-coated carbon steel/ductile iron	Superior chemical and rust resistance	Wastewater treatment, chemical pipelines

Sealing Gasket Options

Gasket Material	Temperature Range	Key Properties	Application Scenarios
EPDM (Ethylene Propylene Diene Monomer)	-40°C – 120°C	Excellent weather resistance, chemical stability	Water supply, HVAC, fire protection (non-oil media)
Nitrile Rubber (NBR)	-20°C – 100°C	Oil and fuel resistance	Petroleum, hydraulic systems
Silicone Rubber	-60°C – 200°C	High-temperature resistance, flexible	High-temperature industrial pipelines
Fluoropolymer (PTFE)	-200°C – 260°C	Chemical inertness, corrosion resistance	Strong acid/alkali, corrosive media

Manufacturing Standards & Certifications

International Standards:

ANSI/AWWA C110/A21.10 (American Water Works Association)

ASME B16.5 (American Society of Mechanical Engineers)

EN 1092-1 (European Standard)

DIN 2501 (German Standard)

GB/T 12465 (Chinese National Standard for grooved pipe fittings)

Quality Certifications: ISO 9001, UL, FM (for fire protection applications), CE.

Quality Control: Each flange undergoes dimensional inspection (CNC measurement), groove precision testing, pressure testing (hydrostatic/air pressure), and surface quality checks to ensure compliance with standard requirements.

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