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Nominal Size: DN6-DN200
Design Standard: ASME B16.3
Material: ASTM A197/A197M (Malleable Cast Iron)
Size Range: 1/8" (DN6) - 8" (DN200)
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Product description
Malleable iron pipe fittings are suitable for pipeline connection pieces used in the transportation of media with a nominal size ranging from DN6 to DN200, a service temperature of -29°C to 175°C, and a maximum working pressure of 2.1 MPA. They are an important part of the pipeline systems in the fields of gas, fire protection, water affairs, and heating, ventilation and air conditioning, and can meet the connection requirements of various pipeline systems. Whether it is a straight pipeline or a curved pipeline, or whether it is a pipeline with the same diameter or different diameters, malleable iron pipe fittings can provide a firm and reliable American standard threaded connection, which is convenient for 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 45 Degree Elbow provides a gradual directional change in threaded piping systems and is available in both Female × Female and Male × Female configurations.
Manufactured from ASTM A197/A197M malleable iron to ASME B16.3, the range covers 1/8" to 8" (DN6–DN200). NPT or BSP thread requirements and black or galvanized finishes can be supplied according to the target market and project specification.
For pipe fitting wholesalers, importers, MEP contractors, industrial distributors and OEM brands, different elbow sizes can be consolidated with our complete range of Malleable Iron Pipe Fittings for bulk and repeat purchasing.
• Size Range: 1/8"–8" / DN6–DN200
• Material: ASTM A197/A197M Malleable Iron
• Design Standard: ASME B16.3
• Angle: 45 Degrees
• Connections: Female × Female / Male × Female
• Thread Options: NPT / BSP
• Finish Options: Black / Galvanized
• Service Temperature: -29°C to 175°C
• Maximum Working Pressure: Up to 2.1 MPa
• Supply Type: Bulk, Wholesale, Project and OEM Orders
| Parameter | Specification |
|---|---|
| Product | Malleable Iron 45 Degree Elbow |
| Material | ASTM A197/A197M Malleable Iron |
| Design Standard | ASME B16.3 |
| Size Range | 1/8"–8" / DN6–DN200 |
| Angle | 45 Degrees |
| Connection Options | Female × Female / Male × Female |
| Thread Options | NPT / BSP according to order requirements |
| Surface Finish | Black / Galvanized |
| Service Temperature | -29°C to 175°C |
| Maximum Working Pressure | Up to 2.1 MPa |
| Typical Media | Water, Gas, Air, Oil and Steam |
| Applications | Plumbing, Gas, Fire Protection, HVAC and Industrial Piping |
| Order Type | Bulk / Distributor / Project / OEM |
| Customization | Marking, Labels and Packaging |
For an accurate quotation, please provide the required size, F/F or M/F connection, NPT or BSP thread, finish and quantity for each SKU.
Both connection styles perform the same basic function—changing pipe direction by 45 degrees—but they connect differently within the piping system.
A Female Threaded 45 Degree Elbow has internal threads at both ends and connects two compatible male-threaded pipes or fittings.
It is commonly selected for standard threaded piping installations where both adjoining pipes have male threads.
Typical purchasing descriptions include:
• 45 Degree F/F Elbow
• Female Threaded 45 Degree Elbow
• Malleable Iron 45 Elbow
• 45 Degree Threaded Pipe Elbow
A Male × Female fitting is commonly referred to in overseas markets as a 45 Degree Street Elbow.
The fitting has one male threaded end and one female threaded end, allowing it to connect directly into another female-threaded fitting or component.
This can reduce the need for an additional nipple in certain piping layouts and helps create a more compact connection.
For international RFQs, useful descriptions include:
• Malleable Iron 45 Degree Street Elbow
• 45 Degree M/F Street Elbow
• Male Female 45 Degree Elbow
• NPT 45 Degree Street Elbow
The required elbow angle depends on the pipeline route.
A 45 degree elbow creates a less abrupt directional change, while a Malleable Iron 90 Degree Elbow creates a full right-angle turn.
| Feature | 45 Degree Elbow | 90 Degree Elbow |
|---|---|---|
| Direction Change | 45° | 90° |
| Flow Transition | More gradual | Sharper |
| Typical Use | Offset and gradual routing | Right-angle routing |
| Pipeline Layout | Useful for angled runs | Useful for perpendicular runs |
| Connection Options | F/F or M/F | Depends on fitting type |
Two 45 degree elbows may also be used in certain layouts to create an offset instead of using one sharp directional change.
For systems requiring a larger-radius 90° transition, consider our Malleable Iron Long Radius 90 Degree Elbow.
Thread compatibility should be confirmed before bulk production.
NPT is widely used in North America, while BSP/BSPT threaded fittings are commonly specified across Europe, the Middle East, Asia, Africa and many other international markets.
Although the nominal pipe size may look similar, NPT and BSP threads use different thread geometry and should not be treated as interchangeable.
For distributor and OEM orders, thread standards can be separated by:
• SKU
• Product marking
• Carton label
• Packaging configuration
• Purchase-order line
This is particularly useful for importers supplying more than one regional market.
Black malleable iron fittings are commonly supplied for compatible gas, compressed-air, steam, oil and general industrial piping systems.
Distributors can combine 45 degree elbows with tees, couplings and other black threaded fittings to create a coordinated product range.
Galvanized malleable iron elbows have a protective zinc coating that improves corrosion resistance for suitable water, humid, outdoor and building-service environments.
For bulk galvanized fitting orders, both coating quality and thread condition are important. Excessive or inconsistent zinc around the threaded area can affect installation, so thread and surface quality should both be inspected before shipment.
Our Malleable Iron 45 Degree Elbows are intended for commercial and large-volume purchasing.
Typical buyers include:
• Pipe fitting wholesalers
• Plumbing distributors
• Building material importers
• Gas equipment distributors
• Fire protection suppliers
• HVAC wholesalers
• Industrial piping suppliers
• EPC contractors
• MEP contractors
• Private-label pipe fitting brands
A typical distributor order may include multiple 45° elbow sizes together with Malleable Iron Threaded Tees, couplings and other fitting types.
Consolidating multiple SKUs with one supplier helps simplify specification control, inspection, packaging and shipment coordination.
Large-volume buyers need consistency across thousands of fittings, not just a good individual sample.
Our production and inspection process focuses on the areas that directly affect installation performance.
Malleable iron quality and casting conditions are controlled to reduce defects such as cracking, porosity and dimensional instability.
Thread dimensions and alignment are checked to reduce:
• Cross-threading
• Difficult installation
• Insufficient thread engagement
• Pipe misalignment
• Leakage caused by poor thread fit
Critical fitting dimensions, connection geometry and 45-degree orientation are inspected to maintain consistent installation characteristics between batches.
Finished pipe fittings undergo pressure-related inspection to identify leakage or casting defects before shipment.
Black and galvanized finishes are checked for surface quality before products are packed for shipment.
For distributors and established fitting brands, OEM requirements can be coordinated with bulk orders.
Available options may include:
• Product marking
• Customer branding
• Carton design
• Barcode and SKU labels
• Size-specific packaging
• NPT/BSP differentiation
• Black or galvanized finish
• F/F and M/F product assortments
• Mixed fitting orders
If your purchasing program also requires straight pipe connections, our Malleable Iron Threaded Couplings can be consolidated into the same fitting order.
Malleable Iron 45 Degree Elbows are commonly used to change pipeline direction in:
Gas Piping
Black threaded elbows provide directional connections in compatible gas piping systems.
Water Systems
Galvanized elbows can be specified for suitable water distribution and utility piping.
Fire Protection
Threaded 45-degree elbows can be used in compatible sections of fire protection piping according to project requirements.
HVAC Systems
They are used for angled routing in heating, cooling and mechanical-service pipework.
Compressed Air
Factories and workshops use 45 degree threaded elbows for compressed-air distribution systems.
Industrial Utility Piping
The fittings can also be used for compatible oil, air, steam and general industrial pipeline applications subject to system design conditions.
HULU has been engaged in the foundry industry since 1995 and supplies a broad portfolio of pipe fittings, valves and related pipeline products.
For bulk buyers, our supply approach focuses on:
• Broad size coverage
• Equal product specifications across repeat orders
• Accurate threaded connections
• Black and galvanized options
• Complete fitting-range purchasing
• OEM marking and packaging
• Factory quality inspection
• Support for distributor and project orders
This allows customers to source complete fitting ranges rather than purchasing one elbow type from multiple suppliers.
It is a threaded pipe fitting designed to change pipeline direction by 45 degrees. It is available with Female × Female or Male × Female threaded connections.
A 45 Degree Street Elbow normally has one male threaded end and one female threaded end. It can connect directly into another female fitting, reducing the need for a separate nipple in certain installations.
The current product range covers 1/8" to 8", corresponding to DN6–DN200.
Yes. HULU supports NPT and BSP thread requirements for international markets. The required thread standard should be specified before production because the two systems are not interchangeable.
Yes. Black and galvanized malleable iron fitting options are available according to application and purchase requirements.
Yes. Bulk orders can contain multiple 45 degree elbow sizes and connection configurations, together with other malleable iron fittings.
Yes. Product identification, branding, SKU labels, cartons and other private-label packaging requirements can be coordinated for commercial orders.
Looking for Malleable Iron 45 Degree Elbows for wholesale distribution, OEM branding or project procurement?
Send us your required sizes, F/F or M/F connections, NPT/BSP requirements, finish and quantity for each SKU.
HULU can supply 45 degree elbows individually or consolidate them with tees, couplings, 90 degree elbows and other malleable iron fittings for bulk and repeat purchasing programs.
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