HDPE to Steel Transition Coupling

Material: Ductile iron ASTM A536, 65-45-12 Fastener Material: Carbon steel bolts and nuts Gasket Options: EPDM, nitrile, silicone rubber, etc. Pressure Rating: 300–500 psi Connection Type: Plain-end HDPE pipe to grooved pipe or fittings Surface Protection: Red painted or hot dip galvanized Bolting Options: ANSI and EN bolt configurations available by size

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The HDPE to Steel Transition Coupling is designed to connect plain-end HDPE pipe with grooved steel pipe, fittings, or related metal pipework. Its four-bolt structure drives machined teeth into the outside of the HDPE pipe to create a secure mechanical grip, offering a rigid connection without the need for fusion equipment.

Key Features

Designed for connecting HDPE pipe to steel or grooved metal pipework
Four-bolt structure provides strong mechanical fastening
Machined teeth grip into the HDPE pipe surface for secure connection
No costly fusion equipment required during installation
Ductile iron housing for reliable strength and durability
Suitable for plain-end HDPE pipe with SDR range from 32.5 to 7.3
Multiple gasket material options for different system requirements
Red painted or hot dip galvanized surface finish available

Product Configurations

Item	Details
Connection Use	Plain-end HDPE pipe to grooved steel pipe or fittings
Pipe Compatibility	HDPE pipe, SDR 32.5 to SDR 7.3
Joint Type	Rigid mechanical transition joint
Fastening Design	Four-bolt coupling structure
Size Range	2″ to 10″
DN Range	DN50 to DN250
Grip Method	Machined teeth grip into the HDPE pipe surface
Application	Fire protection, water supply, and HDPE-to-metal pipe systems

FAQ
Q1: Who are we?
A: We are a fire fighting equipment manufacturer based in Fujian, China. Since 2004, we have supplied a wide range of fire safety products for domestic and international markets, including fire sprinklers, hydrants, valves, hoses and extinguishers.
Q2: How do we ensure product quality?
A: We follow strict quality control procedures from raw material inspection to production and final shipment. Pre-production samples and final inspections can be arranged according to order requirements.
Q3: What products do we supply?
A: We supply fire sprinklers, fire extinguishers, fire hydrants, fire valves, fire hoses, hose reels, fire cabinets, foam equipment and other fire fighting accessories.
Q4: Why choose Sunroom?
A: Sunroom has over 21 years of experience in fire fighting equipment manufacturing. We offer a wide product range, support customized production, and provide certificates or technical documents according to product and project requirements.

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