45° Flanged Elbow
The 45° flanged elbow is an angled direction-changing pipe fitting we supply to the pipeline engineering market, integrating a 45° elbow direction-changing structure with flanged quick-installation connections. Compared with 90° elbows, the 45° angled bend is more targeted in fine-tuning pipeline slopes, misaligned connections, and dispersing fluid impact, making it suitable for occasions requiring control of pipeline stress, reduction of scale buildup, or avoidance of installation dead zones. The product is divided into two specifications: long radius 1.5D and short radius 1.0D, with nominal diameters covering DN15-DN2000, and pressure compatibility for national standard PN10-PN160 and American standard Class150-Class2500. Materials cover carbon steel, stainless steel, and alloy steel, and can be selected according to medium type, working temperature, and corrosion conditions. The flange face is precision machined, bolt hole positions are configured according to standards, and both single-flange and double-flange forms are supported. Regular carbon steel and stainless steel stock styles can be quickly arranged for shipment after order confirmation, while non-standard sizes, special materials, and surface processes can be customized according to project requirements.
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180° Flanged Elbow
The 180° flanged elbow we provide has the flange ports integrally formed with the elbow, eliminating the need for on-site welding of flanges and reducing defects in the weld heat-affected zone. During installation, only bolt tightening is required; the parallelism deviation of the two flanges is controlled within ≤0.2 mm, the concentricity deviation is ≤1 mm, and the flatness error of the sealing surface is ≤0.02 mm, and it can withstand pressures above 1.6 MPa. Materials cover carbon steel, stainless steel 304/316L, duplex steel S32205, alloy steel 15CrMo/WP11, etc.; nominal diameters cover DN15–DN2000; bending radii are available in long radius R=1.5D and short radius R=1.0D; wall thickness grades range from Sch5S to Sch160. Material certificates, hydrostatic test reports, and non-destructive testing reports can be provided at the factory. For specific specifications, materials, flange standards, and quantity requirements, please contact us for confirmation before quotation.
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Flange equal-diameter elbow
The flanged equal-diameter elbows we supply have flanges of the same diameter at both ends, and are connected to pipelines, valves, or equipment through 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, plastics, etc. Pressure ratings cover PN6 to PN100, Class150 to Class1500, and 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.
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Long radius flanged elbow
Long-radius flanged elbows are among the most commonly used standard elbows in pipeline engineering, with the industry designation LR and a bending radius R=1.5D. Compared with short-radius elbows, their curvature is gentler, resulting in less turbulence and pipe-wall erosion when the medium passes through, which helps reduce scaling, vibration, and local pressure drop, making them suitable for long-distance transportation, high-flow-rate, and continuously operating pipelines. The flanges at both ends can be directly connected to pipes, valves, and pressure vessels via bolts and sealing gaskets, without the need for on-site welding, making later maintenance, cleaning, and modification more convenient. We produce according to standards such as GB/T12459, GB/T9113, ASME B16.9, and ANSI B16.5. Material options include carbon steel, stainless steel, alloy steel, and plastic, among others. Pressure ratings cover PN6 to PN100 and Class150 to Class1500, suitable for media such as water, steam, oil products, gas, acid-base chemical fluids, and sewage.
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Integrally Cast Flanged Elbow
Integrally cast flanged elbows, also known as one-piece cast flanged elbows or cast steel flanged elbows, are formed in a single pour using an integral sand mold precision casting process, with no welding, splicing, or secondary assembly between the flange and the elbow body. Compared with ordinary welded flanged elbows, they structurally avoid common problems such as weld slag inclusion, porosity, cracks, and incomplete fusion, featuring high structural density and uniform wall thickness, and can withstand high pressure, high temperature, and continuous medium scouring. The products are available in three angles: 45°, 90°, and 180°, in two curvatures: long radius R1.5D and short radius R1.0D. Materials cover cast steel, ductile iron, stainless steel casting, and alloy casting. The flanges use bolted gasket connections, with flat sealing surfaces and precise bolt hole positions. They are suitable for high-pressure pipeline systems in mining, metallurgy, thermal power stations, high-pressure chemical engineering, oil and gas transportation, shipbuilding and heavy industry, pressure vessels, and special equipment. For specific diameters, pressure ratings, and material configurations, please contact us for confirmation.
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GB standard elbow
National standard elbows are formed by stamping and pushing seamless steel pipes or by rolling and welding steel plates, with an integrally formed structure, used for pipeline direction changes, fine adjustment of routing, and pipeline avoidance. The products strictly align with GB/T12459-2017 Steel Butt-Welding Seamless Pipe Fittings and GB/T13401-2017 Steel Plate Butt-Welding Pipe Fittings, and their dimensions, wall thickness, bevels, and pressure-bearing parameters match national standard drawings, making them suitable for the compliance requirements of domestic bidding, engineering inspection, and foreign aid export projects. Conventional supply angles are 45°, 90°, and 180°, bending radii are divided into long radius 1.5D and short radius 1.0D, and the nominal diameter range is DN15 to DN1200, among which seamless elbows cover small and medium diameters, and rolled elbows cover large-diameter specifications. Commonly used materials include 20# carbon steel, Q235B, 16Mn alloy steel, 304 and 316L stainless steel, and the connection method is butt-welding bevel connection, suitable for on-site welding construction. Material certificates, non-destructive testing, hydrostatic testing, and other documents can be provided before delivery, and spot supply and non-standard customization according to drawings are supported.
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American standard elbow
American standard elbows are pressure-bearing pipe fittings used in American standard pressure piping systems to change the direction of media flow. They are formed by forging or seamless pushing processes, with dimensions in inches, and groove, tolerance, non-destructive testing, and heat treatment are executed according to American standard specifications. Conventional butt-welding elbows comply with ASME B16.9, carbon steel pipes match ASME B36.10M, stainless steel matches ASME B36.19M, and high-strength pipe fittings refer to MSS SP-75. The specification system covers 1/2 inch to 48 inches, angles include 45°, 90°, and 180°, bending radii include 1.5D long radius and 1.0D short radius, and wall thickness grades include Sch10, Sch40, Sch80, Sch120, Sch160, and XXS. Mainstream materials include A234 WPB carbon steel, A403 WP304/WP316L stainless steel, A234 WP11/WP22 chrome-molybdenum alloy steel, and S32205 duplex steel. Products are exported to overseas engineering projects in North America, the Middle East, Southeast Asia, and other regions, and can be supplied as complete sets with American standard flanges, American standard branch outlets, American standard tees, and other pipe fittings. Conventional in-stock specifications have a minimum order of 1 piece, and packaging and shipping can be completed within 24 to 48 hours after order confirmation.
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Russian standard elbow
Russian-standard elbows are used to change the direction of pipeline medium conveyance. They are butt-welded pipe fittings produced according to the GOST 17375-2001 standard, while also referencing Russian-standard pipe fitting specifications such as GOST 30753 and GOST 17380. The nominal diameter adopts the DN metric system. Conventional angles include 45°, 90°, and 180°. Bending radii include two series: 1.5D long radius and 1.0D short radius. The seamless process covers DN15-DN600, and the rolled process covers DN600-DN1200. Materials include Russian-series grades such as Ст20 carbon steel, 09Г2С low-temperature weather-resistant steel, 15ХМ alloy steel, and 12Х18Н10Т stainless steel. Among them, 09Г2С low-temperature steel can adapt to extreme cold working conditions of -60°C, while carbon steel and alloy steel can adapt to working conditions from normal temperature up to 450°C. Product dimensional tolerances, bevel forms, heat treatment, and non-destructive testing are executed according to Russian-standard technical requirements, and can be supplied as complete sets with Russian-standard tees, branch outlets, and flanges. For each order, Chinese-Russian bilingual inspection reports, material certificates, and factory documents can be provided for project acceptance in Russian-speaking regions.
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European standard elbow
European standard elbows are produced in accordance with the EU EN series pipe fitting standards. Pressure-bearing elbows primarily implement EN 10253-2, while non-pressure-bearing elbows implement EN 10253-1, and they simultaneously comply with the PED 2014/68/EU Pressure Equipment Directive, and are compatible with the EN 10216 and EN 10217 European standard steel pipe systems. Production processes include seamless hot-push forming, steel plate rolled and welded forming, and forged forming. Materials cover European standard grades such as P235GH carbon steel, P355GH/P355NL low-alloy steel, 16Mo3 heat-resistant steel, 1.4301/1.4404 stainless steel, and duplex steel. Specifications adopt the DN metric nominal diameter system, with nominal diameters from DN15 to DN1200, conventional angles of 45°, 90°, and 180°, and bending radii divided into two series: 1.5D long radius and 1.0D short radius, with pressure adaptation from PN16 to PN160. Dimensional tolerances, beveling, heat treatment, non-destructive testing, and mechanical properties are implemented in accordance with EU regulations. They can be supplied as complete sets with European standard tees, branch outlets, and flanges, and support the issuance of EN10204 3.1/3.2 material certificates.
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