Grooved flange

Rapid & Tool-Free Installation

Grooved flanges adopt a mechanical locking design with grooved ends and locking rings, eliminating the need for on-site welding or complex threading. The installation process only requires aligning the flange with the grooved pipe, placing the gasket, and tightening the locking bolts—completing a connection in 5-10 minutes (30%-50% faster than welding or threaded flanges). No specialized welding skills or heavy equipment are needed, significantly reducing labor costs and construction time for large-scale projects like fire protection systems or industrial pipelines.

Boltless & Space-Saving Design

Unlike traditional flanges that rely on multiple circumferential bolts, grooved flanges use a compact locking ring mechanism. This boltless structure reduces the overall size of the flange, saving 40%-60% of installation space. It is ideal for confined areas such as building ceilings, underground pipelines, or equipment compartments where space is limited, while also simplifying pipeline layout and reducing interference with other components.

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.

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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.

Grooved flange ASA 4 inches .jpg

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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