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Nominal Size: DN8-DN150
Design Standard: EN 10242
Material: EN 1562 - Malleable Iron Castings
Size Range: 1/4" (DN8) - 6" (DN150)
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Product description
Malleable iron pipe fittings are suitable for pipeline connections with nominal sizes (DN) ranging from 6 to 150, operating temperatures from -20°C to 300°C, and a maximum working pressure of 2.5 MPa. They are an essential component of pipeline systems in the gas, fire protection, water, and HVAC sectors, capable of meeting the connection needs of various pipeline systems. Whether for straight pipelines or curved pipelines, or for pipelines of the same or different diameters, malleable iron pipe fittings provide a secure and reliable German standard threaded connection, facilitating on-site construction.
Customer challenge
Product function
Value advantage
Premium Material
Superior Corrosion Resistance
Precision Threads
Comprehensive Product Range
Fast Service
High Cost Performance
Our Malleable Iron Long Radius 90 Degree Elbow provides a gradual 90° change of direction for threaded piping systems where a smoother flow path is preferred over a compact standard elbow.
Manufactured according to EN 10242 from EN 1562 malleable iron, the range covers 1/4" to 6" (DN8–DN150). Male/Female and Female/Female threaded configurations, together with black and galvanized finishes, are available to support different pipeline layouts and market requirements.
For wholesalers, importers, MEP contractors and industrial distributors, multiple sizes and Malleable Iron Pipe Fitting types can be consolidated into one bulk purchasing program.
• Size Range: 1/4"–6" / DN8–DN150
• Design Standard: EN 10242
• Material Standard: EN 1562 Malleable Iron
• Bend Angle: 90°
• Design: Long Radius / Long Sweep
• Connection Options: Male × Female / Female × Female
• Finish Options: Black / Galvanized
• Working Temperature: -20°C to 300°C
• Maximum Working Pressure: Up to 2.5 MPa
• Order Type: Bulk, Wholesale, Project and OEM Orders
| Parameter | Specification |
|---|---|
| Product | Malleable Iron Long Radius 90 Degree Elbow |
| Product Type | Long Radius Elbow / Long Sweep Bend |
| Material | Malleable Iron to EN 1562 |
| Design Standard | EN 10242 |
| Size Range | 1/4"–6" / DN8–DN150 |
| Angle | 90 Degrees |
| Connection | Male × Female / Female × Female |
| Surface Finish | Black / Galvanized |
| Working Temperature | -20°C to 300°C |
| Maximum Working Pressure | Up to 2.5 MPa |
| Typical Media | Water, Air, Gas, Oil and Steam |
| Applications | Gas, Fire Protection, Water, HVAC and Industrial Pipelines |
| Supply Type | Bulk / Distributor / Project / OEM |
| Customization | Product Marking, Labels and Packaging |
Actual operating limits should always be checked against the piping medium, temperature and applicable project specification.
A standard 90 degree elbow creates a relatively compact directional change. A Malleable Iron Long Radius Elbow uses a more gradual curve.
This difference can be important in piping systems where flow behavior and installation layout need to be considered.
| Feature | Long Radius 90° Elbow | Standard 90° Elbow |
|---|---|---|
| Direction Change | Gradual 90° bend | Compact 90° turn |
| Installation Space | Requires more space | Requires less space |
| Flow Transition | Smoother | Sharper |
| Turbulence | Generally lower | Generally higher |
| Typical Selection | Flow-sensitive or spacious layouts | Compact piping layouts |
The longer bend geometry helps reduce abrupt flow changes and can lower turbulence and pressure loss compared with a tighter elbow.
This makes a Malleable Iron Long Sweep Elbow particularly useful in heating, compressed-air, fluid distribution and industrial piping systems where a smoother directional transition is preferred.
Connection configuration should be confirmed before placing a bulk order.
A Male Female Long Radius Elbow has one externally threaded connection and one internally threaded connection.
This configuration can connect directly into another female threaded fitting or component, reducing the need for an additional nipple in certain piping layouts.
It is also widely referred to in international fitting catalogs as a:
Long Sweep Bend 90° M/F
A Female Female Long Radius Elbow has internal threaded connections at both ends and connects two compatible male-threaded pipes or fittings.
It is commonly specified when the piping system requires a gradual 90-degree change while maintaining female threaded connections at both ends.
For RFQs, clearly state M/F or F/F for every required size to prevent connection-type errors.
In the malleable iron fitting market, buyers may encounter both:
Long Radius 90 Degree Elbow
and
Long Sweep 90 Degree Bend
The terms are often used for the same general type of fitting: an elongated 90-degree bend that changes pipeline direction more gradually than a standard elbow.
European and international fitting catalogs frequently use Long Sweep Bend 90°, while buyers may also search for Long Radius Elbow or Long Radius Threaded Elbow.
For purchasing purposes, the most important information is not the wording alone. Buyers should confirm:
• Nominal size
• Connection type
• Thread requirement
• Center-to-end dimensions
• Material standard
• Surface finish
• Pressure and temperature requirements
Black fittings are commonly selected for compatible gas, compressed-air, steam, HVAC and general industrial pipeline systems.
For distributors, black long sweep elbows can be combined with other black threaded fittings to create a consistent product range.
Galvanized fittings use a protective zinc-based surface layer to provide increased corrosion resistance.
They are commonly specified for water systems, outdoor piping, humid environments, fire protection systems and general building-service pipelines where galvanized fittings are required.
Both surface finish and thread condition are inspected because excessive or inconsistent coating around threaded areas can affect assembly.
Our Long Radius 90 Degree Elbows are supplied for commercial purchasing rather than small retail orders.
Typical buyers include:
• Pipe fitting wholesalers
• Plumbing distributors
• Building material importers
• Fire protection suppliers
• Gas equipment distributors
• HVAC suppliers
• Industrial piping distributors
• EPC and MEP contractors
• Project procurement companies
• Private-label fitting brands
A single purchase order can contain multiple long radius elbow sizes together with other Malleable Iron Pipe Fittings, helping buyers simplify purchasing, quality control and shipment consolidation.
For distributors, consistency between batches is as important as the performance of an individual fitting.
Our inspection process focuses on the characteristics that directly affect installation and service performance.
Raw materials, casting conditions, dimensions and surface appearance are controlled during manufacturing to reduce cracking, porosity and other casting defects.
Critical thread dimensions and alignment are inspected to support reliable assembly and reduce problems such as cross-threading, insufficient engagement and pipeline misalignment.
Long radius fittings require stable bend geometry and connection dimensions.
Critical dimensions are checked to help maintain consistent installation clearances across bulk production.
Finished fittings undergo pressure-related inspection to identify leakage or through-wall casting defects before shipment.
Black or galvanized surfaces are checked for appearance and treatment consistency before packaging.
For established distributors and private-label brands, OEM requirements can be coordinated with bulk orders.
Available options may include:
• Brand or product marking
• Carton customization
• Product labels
• Barcode and SKU labels
• Size-specific packaging
• Black or galvanized finish
• M/F and F/F product combinations
• Mixed-size orders
• Combined fitting purchasing programs
If you already have drawings, technical specifications, samples or an existing fitting range, send them with your RFQ for evaluation.
Malleable Iron Long Radius 90 Degree Elbows are commonly used where threaded pipelines require a more gradual directional change.
Typical applications include:
Gas Piping – changing pipeline direction while maintaining threaded malleable iron connections.
HVAC and Heating Systems – suitable where a smoother bend is preferred in heating and mechanical-service piping.
Compressed Air Systems – used in workshop and industrial air distribution systems.
Fire Protection Systems – suitable for threaded sections of compatible fire protection piping according to project requirements.
Water Distribution – galvanized versions can be specified for applicable water and utility piping.
Industrial Pipelines – used for air, oil, steam and other compatible media subject to system design requirements.
HULU has worked in the foundry industry since 1995 and supplies a broad portfolio of pipe fittings, valves and related pipeline products.
For bulk buyers, we focus on the factors required for repeat procurement:
• Consistent malleable iron casting quality
• Controlled threads and dimensions
• Black and galvanized product options
• Broad size coverage
• Multiple fitting types from one source
• OEM marking and packaging support
• Quality inspection before shipment
• Support for repeat distributor and project orders
This allows customers to source not only one Malleable Iron Long Radius 90 Degree Elbow, but a broader range of threaded fittings under coordinated technical and commercial requirements.
It is a threaded malleable iron fitting designed to change pipeline direction by 90 degrees using a longer, more gradual bend than a conventional compact elbow.
The two terms are commonly used for the same general fitting style in the malleable iron pipe fitting industry. International catalogs frequently use the term Long Sweep Bend, while buyers also search for Long Radius Elbow.
Male × Female and Female × Female threaded configurations are available depending on product size and purchasing requirements.
The current product range covers 1/4" to 6", corresponding to DN8–DN150.
A standard elbow creates a tighter directional change and requires less installation space. A long radius elbow uses a more gradual curve, providing a smoother change in flow direction but requiring greater installation clearance.
Yes. Black and galvanized malleable iron fitting options are available according to the application and purchase specification.
Yes. Bulk orders can contain multiple sizes and connection types. Long radius elbows can also be consolidated with other malleable iron threaded fittings in one purchasing program.
Yes. Product identification, labels, cartons, SKUs and other private-label packaging requirements can be discussed for commercial orders.
Looking for Malleable Iron Long Radius 90 Degree Elbows for distribution, OEM branding or a piping project?
Send us your required sizes, M/F or F/F connections, finish, thread requirements and quantities.
HULU can supply individual long radius elbow ranges or consolidate them with tees, couplings, unions and other malleable iron fittings for bulk and repeat purchasing programs.
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