Grooved fittings include various shapes such as elbows, tees, and reducers,etc，each featuring grooved ends for easy connection with grooved pipes. They are designed for a secure and stable joint with minimal installation effort.
Grooved Pipe Fittings Manufacturer
CNG manufactures grooved pipe fittings for fire protection, HVAC, water supply and industrial piping systems. Our product range includes grooved elbows, tees, crosses, reducers, end caps and nipples for changing pipe direction, creating branches, connecting different pipe diameters and terminating pipe runs.
Contractors, distributors, EPC companies and project procurement teams can select fittings according to pipe outside diameter, fitting configuration, pressure requirement, coating, applicable approval and system conditions.
CNG also supplies a complete range of grooved piping products, including couplings, mechanical tees and grooved flange adapters for complete project procurement.
[Request a Project Quote]
Our Grooved Pipe Fittings
Grooved Elbows
Grooved elbows change the direction of a piping run without welding. The required elbow angle should be selected according to the pipeline route, available installation space and required center-to-end dimensions.
CNG supplies:
When requesting an elbow quotation, provide the required angle, nominal pipe size, actual pipe OD, pressure rating, coating and approval requirements.
Grooved Tees and Crosses
Grooved tees and crosses create branch connections in a piping network. Equal fittings maintain the same nominal diameter at each outlet, while reducing fittings connect a smaller branch to the main pipe.
Available products include:
Select tees and crosses by run size, branch size, actual pipe OD, center-to-end dimensions and required working pressure.
Grooved Reducers
Grooved reducers connect pipes of different diameters. The choice between a concentric and eccentric reducer depends on pipeline alignment, drainage, equipment connection and project design.
CNG offers:
Specify both the large-end and small-end pipe OD when requesting a reducer. Nominal pipe size alone may not be sufficient to confirm compatibility.
Grooved End Caps
End caps close a pipe run for system termination, pressure testing, maintenance isolation or planned future extension.
Available configurations include:
End caps should be selected according to actual pipe OD, pressure rating, required finish and applicable approval.
Pipe Nipples
Pipe nipples provide short connection sections between fittings, valves and other piping components. Available end configurations should be confirmed according to the project connection requirements.
View the available grooved and threaded pipe nipples.
Select Grooved Fittings by Piping Function
| Piping Requirement | Recommended Product |
|---|
| Change the pipe direction by 90 degrees | 90° Grooved Elbow |
| Create a smoother directional transition | 45° Grooved Elbow |
| Make a small pipeline offset | 22.5° or 11.25° Grooved Elbow |
| Change direction and reduce pipe size | 90° Reducing Elbow |
| Create an equal branch | Equal Grooved Tee |
| Connect a smaller branch to the main pipe | Grooved Reducing Tee |
| Divide flow in four directions | Equal Grooved Cross |
| Connect different pipe diameters on one centerline | Concentric Reducer |
| Connect different diameters with an offset centerline | Eccentric Reducer |
| Close or terminate a pipe run | Grooved End Cap |
| Connect closely positioned components | Pipe Nipple |
Final product selection should be confirmed against the piping drawing, pipe OD, groove dimensions, working pressure, coating and applicable approval requirements.
Materials, Pressure Ratings and Surface Options
CNG grooved fittings are available in different configurations according to the product model and size.
| Selection Item | Available Product Direction |
|---|
| Fitting material | Ductile iron conforming to ASTM A536 Grade 65-45-12 on applicable products |
| Pressure rating | Selected products are shown within the 300–500 PSI range; confirm by model and size |
| Surface treatment | Epoxy powder coating, electrophoretic coating or hot-dip galvanizing |
| Color | Red and other available project colors |
| Connection | Grooved-end and selected threaded configurations |
| Product types | Elbows, tees, crosses, reducers, end caps and nipples |
| Approval | Confirm according to the exact product, model, size and pressure rating |
Material, available size, pressure rating and approval coverage can vary across product families. Request the relevant specification before confirming an order.
Grooved Pipe Fittings for Fire Protection Systems
Grooved elbows, tees, crosses, reducers and end caps are used throughout fire sprinkler mains, risers, branch piping, pump rooms and fixed fire hydrant networks. They allow contractors to assemble directional changes, branch connections, pipe-size transitions and system terminations within a grooved piping layout.
For a complete overview of couplings, fittings, mechanical outlets and flange adapters used in sprinkler and fire protection piping, visit our fire protection grooved pipe fittings manufacturer page.
Fire protection buyers should provide:
Fire sprinkler, hydrant or pump-room application;
Wet, dry or pre-action system type;
Nominal pipe size and actual pipe OD;
Working and test pressure;
Red-painted or galvanized finish;
Required UL listing, FM approval or other documentation;
Product quantities and delivery destination.
Approval coverage must be verified by product model and size rather than applied to the complete product range automatically.
Grooved Fittings for HVAC Systems
Grooved elbows, tees and reducers are used in chilled-water, cooling-water and mechanical-room piping where fast assembly, equipment access and organized routing are required.
HVAC product selection should consider:
Operating temperature;
System pressure;
Pipe material and outside diameter;
Required gasket material;
Thermal movement;
Indoor or outdoor environment;
Connection to pumps, valves and other equipment.
Fitting selection must be coordinated with the appropriate coupling, gasket and pipe-support design.
Grooved Fittings for Water and Utility Piping
Grooved fittings can be selected for general water supply, water treatment, pump stations and utility piping. Concentric and eccentric reducers help manage diameter transitions, while elbows and tees control direction and distribution.
For potable-water projects, the required material and drinking-water approval must be confirmed separately. Product suitability should not be assumed from the general application description.
Grooved Fittings for Industrial Piping
Industrial facilities use grooved fittings for utility water, equipment connections and selected process-support piping. The suitability of each fitting depends on the conveyed medium, operating pressure, temperature, gasket compatibility and required corrosion protection.
Provide the service medium and operating conditions when submitting an industrial project inquiry.
Complete Your Grooved Piping System
Grooved fittings must be combined with compatible joining and equipment-connection products to form a complete piping system.
CNG supplies:
Selecting these products from a coordinated range helps project buyers confirm connection compatibility across different parts of the piping network.
Quality and Product Verification
Grooved fittings must maintain dimensional consistency at the groove, fitting body and connection points. Product verification should cover both material properties and finished-component performance.
CNG operates metal, rubber, hydraulic and piping-system testing facilities. Available inspection capabilities include material analysis, metallographic inspection, hardness testing, dimensional inspection, pressure testing and leakage testing.
Learn more about CNG production, inspection and technical support.
For approval-sensitive projects, request documentation for the exact product model and size before placing an order.
Why Choose CNG as Your Grooved Fittings Manufacturer?
Grooved Piping Experience Since 2002
CNG, Hebei Dikai Piping Products Co., Ltd., was founded in 2002 and specializes in grooved couplings, pipe fittings, mechanical tees and grooved flanges.
Complete Fitting Range
The product portfolio includes multiple elbow angles, equal and reducing tees, crosses, concentric and eccentric reducers, end caps and nipples.
Production Capacity for Project Procurement
CNG reports an annual casting production capacity of more than 50,000 tons and a production base covering more than 110,000 square meters.
Multiple Coating Options
Selected fittings are available with epoxy powder coating, electrophoretic coating or hot-dip galvanizing according to the product and project requirements.
Support for Different Applications
CNG grooved fittings are used across fire protection, HVAC, water and industrial piping applications. Product suitability is confirmed according to the specific operating conditions.
Project and Distributor Support
Contractors, distributors and EPC procurement teams can submit multi-product BOQs covering fittings, couplings, mechanical tees and flange adapters.
Frequently Asked Questions
What products are included in grooved pipe fittings?
The category normally includes grooved elbows, tees, crosses, reducers, end caps and related pipe connection components. Couplings, mechanical tees and flange adapters are complementary product categories.
Are grooved couplings considered grooved fittings?
Grooved couplings and grooved fittings are closely related but perform different functions. Couplings join grooved-end components, while fittings change direction, create branches, reduce pipe diameter or terminate a pipe run.
What information is needed to select a grooved elbow?
Provide the elbow angle, nominal size, actual pipe OD, center-to-end requirement, working pressure, coating and required approval.
What is the difference between concentric and eccentric reducers?
A concentric reducer maintains a common centerline between the two pipe diameters. An eccentric reducer uses an offset centerline and may be selected where pipeline elevation, drainage or air-pocket control must be considered.
Can grooved fittings be used in fire sprinkler systems?
Selected grooved fittings can be used in fire sprinkler piping when their model, size, pressure rating and approval meet the project requirements. View our complete fire protection grooved pipe fittings range for application-specific information.
Are all grooved fittings UL Listed and FM Approved?
Approval coverage varies by product type, model, size and pressure rating. Buyers should request the applicable listing or approval documentation for every item included in the project BOQ.
Are red-painted and galvanized fittings available?
Selected products are available with epoxy powder coating, electrophoretic coating or hot-dip galvanizing. Confirm finish availability for the required product, size and quantity.
Request a Quote for Grooved Pipe Fittings
Send CNG your required fitting types, pipe outside diameters, pressure ratings, coating preferences, approval requirements, quantities and delivery destination.
For fire sprinkler and fixed fire protection piping projects, review our complete fire protection grooved pipe fittings manufacturer solution.
Request a Quote
