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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 90 Degree Elbow provides a reliable threaded connection for changing pipeline direction by 90 degrees in water, gas, air, steam, fire protection, HVAC and general industrial piping systems.
Manufactured from ASTM A197/A197M malleable iron and designed to ASME B16.3, these threaded elbows are available in sizes from 1/8" to 8" (DN6–DN200). Equal and reducing configurations can be supplied to meet different piping layouts, with black and galvanized finishes available according to application requirements.
For distributors, pipe fitting wholesalers, EPC contractors and project procurement companies, we support bulk orders covering multiple sizes and Malleable Iron Pipe Fittings types, helping simplify sourcing and maintain consistent product quality across large-volume shipments.
• Size Range: 1/8"–8" / DN6–DN200
• Material: ASTM A197/A197M Malleable Iron
• Design Standard: ASME B16.3
• Elbow Angle: 90°
• Types: Equal Elbow / Reducing Elbow
• Thread Options: NPT / BSP according to order requirements
• Finish Options: Black / Galvanized
• Maximum Working Pressure: Up to 2.1 MPa, subject to service conditions
• Service Temperature: -29°C to 175°C
• Bulk Supply: Mixed sizes and fitting combinations available
• OEM Service: Branding, marking and packaging customization available
| Specification | Available Configuration |
|---|---|
| Product Type | Malleable Iron 90 Degree Elbow |
| Material | ASTM A197/A197M Malleable Cast Iron |
| Design Standard | ASME B16.3 |
| Nominal Size | DN6–DN200 |
| Inch Size | 1/8"–8" |
| Elbow Angle | 90 Degrees |
| Configuration | Equal / Reducing |
| Connection | Female Threaded Ends |
| Thread Options | NPT / BSP, according to purchase requirements |
| Surface Finish | Black / Galvanized |
| Service Temperature | -29°C to 175°C |
| Maximum Working Pressure | Up to 2.1 MPa |
| Typical Media | Water, Air, Gas, Oil, Steam |
| Typical Applications | Plumbing, Gas, Fire Protection, HVAC, Industrial Pipelines |
| Inspection | Pressure, Thread, Dimension, Appearance and Marking Inspection |
| OEM Options | Product Marking, Brand Packaging and Order-Specific Requirements |
| Order Type | Bulk, Distributor, Project and OEM Orders |
For project procurement, please provide the required size, equal or reducing configuration, thread standard, surface finish, quantity and application. Our team can prepare a quotation and specification confirmation based on your purchasing list.
We supply both standard equal elbows and malleable iron reducing elbows for different piping configurations.
An equal Malleable Iron 90 Degree Elbow connects two threaded pipes of the same nominal diameter while changing the pipeline direction by 90 degrees.
It is commonly used where the pipe size remains unchanged through the bend.
Typical purchasing information:
• Same nominal connection size at both ends
• Female threaded connection
• NPT or BSP thread options
• Black or galvanized finish
• Multiple sizes can be consolidated in one bulk order
A Malleable Iron Reducing Elbow combines a 90-degree directional change with a pipe-size transition.
Instead of installing a separate elbow and reducer, the reducing elbow allows buyers and installers to achieve both functions with a single threaded fitting. This can simplify piping layouts and reduce the number of connection points required in confined installations.
For bulk reducing elbow orders, please specify both inlet and outlet nominal sizes when requesting a quotation.
Different projects require different surface finishes. We can supply both black and galvanized malleable iron threaded elbows according to the intended environment and procurement specification.
Black malleable iron elbows are commonly selected for gas, air, steam and general industrial piping systems where additional zinc corrosion protection is not required.
They are suitable for distributors and contractors sourcing complete black malleable iron fitting ranges including elbows, tees, couplings, unions and nipples.
The Galvanized Malleable Iron 90 Degree Elbow provides additional surface corrosion resistance and is commonly specified for water systems, humid environments, outdoor piping and other applications where corrosion protection is required.
Our galvanizing process forms a protective zinc-iron layer over the fitting surface while thread quality is controlled to maintain reliable installation.
For large-volume projects, black and galvanized products can be sourced as part of a broader Malleable Iron Pipe Fittings purchasing package.
Thread accuracy is one of the most important factors when purchasing a malleable iron threaded elbow in volume.
Poorly formed threads can create several problems:
• Difficult assembly during installation
• Cross-threading
• Pipe misalignment
• Inconsistent engagement depth
• Increased risk of leakage
• Higher rejection rates during project installation
Our manufacturing and inspection process controls critical thread dimensions and alignment to provide consistent fit across production batches.
NPT and BSP thread configurations can be supplied according to target market and project requirements. Buyers should specify the required thread standard before production because NPT and BSP threads are not interchangeable.
For distributors serving multiple countries, thread standards can also be separated by purchase order, SKU or packaging configuration.
Large-volume buyers require more than an individual fitting that meets basic dimensions. They need repeatable specifications across thousands of pieces and multiple purchase cycles.
Our Malleable Iron 90 Degree Elbows are supplied for customers such as:
• Pipe fitting distributors
• Plumbing wholesalers
• Building material importers
• Fire protection equipment distributors
• HVAC system suppliers
• Gas pipeline equipment suppliers
• EPC contractors
• MEP contractors
• Industrial project procurement companies
• Private-label pipe fitting brands
For buyers sourcing a complete fitting range, orders can combine 90 degree elbows with tees, reducing tees, couplings, unions, nipples and other threaded malleable iron fittings.
This consolidated sourcing approach helps distributors reduce supplier fragmentation and maintain more consistent materials, finishes, threads and packaging across their product range.
Consistency becomes especially important when a purchase order contains thousands or tens of thousands of fittings.
Our quality control system covers raw material inspection, casting, machining, surface treatment and finished-product inspection.
Malleable iron material and production inputs are controlled before casting to reduce the risk of inconsistent mechanical properties and casting defects.
Mold quality, pouring temperature and cooling conditions are monitored during production. Dimensions, weight and surface condition are checked during manufacturing, with metallographic inspection performed according to the quality control plan.
Critical product dimensions and threaded connections are inspected to help ensure correct assembly with corresponding pipes and fittings.
Factory-manufactured pipe fittings undergo pressure inspection to identify leakage or through-wall defects before shipment.
Surface condition, product identification and required markings are checked before finished products are released for packing.
Our quality management system is backed by ISO 9001 certification. More information about our inspection and production controls is available on our Quality & Production page.
For distributors and established pipe fitting brands, we support OEM and private-label requirements for bulk Malleable Iron 90 Degree Elbow orders.
Available customization can include:
• Brand marking
• Product identification
• Packaging design
• Carton labeling
• SKU differentiation
• Mixed-size purchasing programs
• Black or galvanized finish selection
• NPT or BSP thread selection
• Equal and reducing fitting combinations
• Broader fitting-range consolidation
Our in-house manufacturing and mold development capabilities also allow us to work with customers that require order-specific cast iron fitting solutions.
If you are developing your own fitting brand or expanding an existing distribution range, send us your current specification sheet, sample, drawing or product list for evaluation.
The 90 Degree Female Threaded Elbow is designed for piping systems where a durable threaded connection is required to redirect flow.
Galvanized malleable iron elbows can be used in suitable water distribution and utility piping systems where corrosion resistance is required.
Black malleable iron threaded elbows are commonly used to change direction in threaded gas piping systems.
Malleable iron elbows can be incorporated into threaded sections of fire protection and fire-fighting pipeline installations according to project specifications.
Used in heating, ventilation and air-conditioning piping where threaded metal pipe connections are required.
Malleable iron pipe elbows provide compact directional changes in workshop and industrial compressed-air piping.
Depending on system pressure, temperature and engineering requirements, malleable iron fittings can also be used in steam and general industrial utility piping.
HULU has been engaged in the foundry industry since 1995 and has developed an integrated system covering product development, manufacturing and sales.
For distributors and project buyers, our advantage is not limited to producing one Malleable Iron 90 Degree Elbow. We can support broader, recurring purchasing programs.
Our manufacturing system is designed to support different order volumes, product combinations and customization requirements.
Our broader product portfolio includes thousands of pipe fittings, valves and related pipeline products, allowing customers to consolidate more purchasing requirements with one supplier.
Buyers can source elbows together with tees, couplings, unions, nipples and other malleable iron pipe fittings instead of managing separate suppliers for each fitting type.
Finished pipe fittings undergo critical factory inspection including pressure testing as well as thread and dimensional inspection.
We support distributors and private-label customers that require customized identification and packaging for their local markets.
For long-term distributors, maintaining the same thread, casting quality, finish and packaging across repeat orders is critical. Our production and quality management systems are designed to support recurring bulk procurement rather than one-time small-quantity retail sales.
Our standard product range covers nominal sizes from DN6 to DN200, corresponding to approximately 1/8" to 8". Available sizes may vary depending on equal or reducing configuration, thread type and surface finish. Send us your size list for confirmation.
An equal 90 degree elbow connects pipes of the same nominal diameter. A malleable iron reducing elbow connects two different nominal pipe sizes while changing the pipeline direction by 90 degrees.
Yes. Black and galvanized finishes are available for different application environments and market requirements. Buyers should specify the required finish in the RFQ.
NPT and BSP thread configurations can be supplied according to the order specification. Because the two thread systems are different, please confirm the thread standard required by your market before ordering.
Yes. Bulk buyers can submit a purchasing list covering multiple elbow sizes and other malleable iron fittings. This is particularly suitable for distributors, wholesalers and project procurement companies building a complete pipe fitting inventory.
Yes. In addition to the Malleable Iron 90 Degree Elbow, we supply tees, reducing tees, couplings, reducing couplings, unions, nipples and other threaded fittings. Visit our Malleable Iron Pipe Fittings range for more product options.
Yes. OEM services can include product marking, branding, packaging and other order-specific requirements. Please provide your drawings, samples, packaging artwork or technical specifications for evaluation.
Quality control covers raw materials, casting, machining, surface treatment, thread and dimensional inspection, pressure testing, appearance and marking. Our quality management system is supported by ISO 9001 certification.
Looking for a reliable supply of Malleable Iron 90 Degree Elbows for distribution, OEM branding or an upcoming pipeline project?
Send us your required sizes, thread standard, finish, quantities and packaging requirements. We can quote individual elbows or combine your requirements with tees, couplings, unions, nipples and other malleable iron fittings in one purchasing program.
Contact HULU for bulk pricing, technical confirmation and OEM support for your next malleable iron pipe fitting order.
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