The flanged equal-diameter elbows we supply have flanges of the same diameter at both ends, and are connected to pipelines, valves, or equipment via bolts and sealing gaskets, without the need for on-site welding. The products are manufactured according to standards such as GB/T12459, GB/T9113, ASME B16.9, ANSI B16.5, etc. Materials can be selected from carbon steel, stainless steel, alloy steel, plastic, etc. Pressure ratings cover PN6~PN100, Class150~Class1500. The media are suitable for water, steam, oil products, gas, acid-base chemical fluids. The equal-diameter design means the pipeline bore remains unchanged, with no diameter reduction and no additional throttling, making it suitable for working conditions involving simple direction changes. If you need to confirm the specific angle, diameter, material, or pressure rating, you are welcome to contact us for assistance with selection.
Overview
Flange equal-diameter elbows are pipe fittings used in pipeline systems to change the flow direction of the medium. Both ends are flange plates of the same diameter, and the nominal diameters of the inlet and outlet are the same. In the industry, they are also called equal-diameter flange elbows. They are connected to pipelines, valves, or equipment through bolts and sealing gaskets, without the need for on-site welding, making disassembly, assembly, and maintenance relatively convenient. Common angles include 45°, 90°, and 180°, and curvature radii include 1.0D short radius and 1.5D long radius. The equal-diameter design means the pipeline bore remains unchanged, with no diameter reduction and no additional throttling, making it suitable for working conditions that require simple direction changes without diameter reduction. We produce according to standards such as GB/T12459, GB/T9113, ASME B16.9, and ANSI B16.5, and materials and pressure ratings can be selected according to project requirements.
Key Features
First, equal-diameter flow design, with completely identical inlet and outlet calibers, low medium flow resistance, and low pressure loss, without affecting pipeline transportation efficiency. Second, flange weld-free quick-installation structure, requiring no on-site welding or grinding, and can be connected through bolts and sealing gaskets. Later disassembly, cleaning, and maintenance are all convenient, making it suitable for pipelines requiring frequent inspection, repair, and modification. Third, many choices of angles and curvature radii, with conventional angles of 45°, 90°, and 180° all available, and short radius and long radius can be selected according to piping space. Fourth, wide coverage of materials and pressure ratings, with options such as carbon steel, stainless steel, alloy steel, and plastic, and PN6~PN100 and Class150~Class1500 can all be confirmed as needed. Fifth, customization is supported, and special angles, special materials, non-standard calibers, and flange sealing face forms can all be matched according to drawings or samples.
Applications
Flange equal-diameter elbows are used in occasions where the pipeline direction needs to be changed but the pipe diameter is not expected to change. In civil applications, building HVAC circulating water, domestic water supply and drainage, central air conditioning pipelines, and community fire water supply systems all use them. In municipal applications, urban rainwater pipe networks, water supply pipe networks, heating pipe networks, fire protection engineering, and sewage treatment supporting pipelines are common scenarios. In industrial applications, chemical acid and alkali transportation, petroleum and oil-gas pipelines, power plant thermal pipelines, factory circulating cooling pipelines, clean pipelines in food and pharmaceutical industries, and cooling systems of new energy equipment all have applications. In addition, dense piping in equipment rooms, equipment inlet and outlet turns, old pipeline renovation, outdoor open-air pipelines, and buried pipelines can also use them. For specific angles, calibers, and pressure ratings, welcome to contact us for confirmation according to drawings.
Specifications
Angles cover 45°, 90°, and 180°, and special angles such as 22.5°, 60°, and 120° can be customized. Curvature radii include 1.0D short radius and 1.5D long radius. Caliber range is DN15-DN1200 (1/2 inch-48 inch). Wall thickness options include SCH20, SCH40, SCH80, STD, and XS. Pressure ratings include national standard PN6/PN10/PN16/PN25/PN40/PN64/PN100 and American standard Class150-Class1500. Material options include 20#/Q235B carbon steel, 304/316L stainless steel, alloy steel, plastic, etc. For special materials such as duplex steel, Monel alloy, and Hastelloy, please contact us for confirmation. Implementation standards include GB/T12459, GB/T9113, ASME B16.9, ANSI B16.5, and HG/T21635. Flange sealing faces can be customized as raised face, male and female face, tongue and groove face, and ring joint face.
Purchase & Delivery
Conventional standard in-stock models have a minimum order quantity of 1 piece, including mainstream specifications of conventional 90°/45°/180°, PN10/PN16, carbon steel, and 304 stainless steel. The warehouse regularly stocks thousands of standard in-stock specifications. For conventional carbon steel, 304 stainless steel, PN16/PN25, and conventional-caliber elbows, shipment will be made within 24 hours after payment confirmation. For delivery times of conventional standard orders and non-standard customized orders, please contact us for confirmation according to specific specifications and quantities. In terms of packaging, small pieces DN15-DN100 are individually wrapped in bubble film, with dust-proof protective film applied to flange sealing faces, and then packed into thickened hard cardboard boxes; medium and large calibers DN125-DN400 are reinforced with bubble film plus stretch film; large calibers DN450 and above are fixed on solid wood pallets and reinforced with steel straps. Carbon steel pipe fittings are additionally sprayed with anti-rust oil, and stainless steel pipe fittings are packaged separately in isolation. Export fumigation wooden pallets, waterproof packaging, and customized shipping marks are supported.
Service & Support
We provide full-process contact before sales, during sales, and after sales. Before sales, we can assist with parameter selection, working condition matching, drawing verification, and quotation budgeting; during sales, we can synchronize production progress and shipping logistics information; after sales, we can answer questions about installation, adaptation, and maintenance. Conventional products come with a 12-month warranty. During the warranty period, if non-human-caused quality cracking, leakage, or material inconsistency occurs, we will provide free replacement, free reshipment, and bear round-trip logistics costs. For large-volume engineering orders, we can provide online installation guidance by technical personnel or on-site technical support. Non-customized, unused products with intact packaging support seven-day no-reason return and exchange. After-sales response is connected and resolved within 2 hours.
FAQ
What is the difference between a flanged equal-diameter elbow and a reducing elbow?
An equal-diameter elbow has the same inlet and outlet diameters, with no reduction in diameter and low flow resistance, and is only used for simple direction changes in a pipeline; a reducing elbow has different diameters at the two ends and simultaneously provides both direction change and diameter reduction. If the pipeline only needs a direction change and does not need to change the pipe diameter, choosing an equal-diameter elbow is sufficient.
Can a flanged equal-diameter elbow be installed directly without welding?
Yes. Both ends of the product are flanges, which are connected to pipes, valves, or equipment through bolts and sealing gaskets, with no on-site welding required. This makes disassembly, assembly, and maintenance relatively convenient, and it is suitable for pipelines that require frequent maintenance or modification.
What angles and diameters of flanged equal-diameter elbows can you provide?
Standard angles include 45°, 90°, and 180°, curvature radii include 1.0D short radius and 1.5D long radius, and the diameter range is DN15-DN1200 (1/2 inch-48 inch). Special angles such as 22.5°, 60°, and 120° can also be customized. Please contact us to confirm the specific specifications.
What are the minimum order quantity and delivery time for flanged equal-diameter elbows?
Standard in-stock models have a minimum order quantity of 1 piece, and shipment is made within 24 hours after payment confirmation. For non-standard customized orders or orders with special materials, the delivery time needs to be confirmed according to the specific specifications and quantity. You are welcome to contact us for an accurate delivery time.
Is the product packaging suitable for export ocean shipping?
Yes. Small items use bubble wrap plus hard cardboard boxes, medium and large diameters add stretch film, and large diameters use solid wood pallets and steel straps for reinforcement. Carbon steel pipe fittings are coated with anti-rust oil, and stainless steel pipe fittings are packaged separately in isolation. Support for foreign trade export includes fumigated wooden pallets, waterproof packing, and customized shipping marks.
