Integrally cast flanged elbow, also known as one-piece cast flanged elbow or cast steel flanged elbow, is 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, it structurally avoids common problems such as weld slag inclusion, porosity, cracks, and incomplete fusion, featuring high structural density and uniform wall thickness, and is capable of withstanding high pressure, high temperature, and continuous medium scouring. The product is 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 flange uses bolted gasket connections, with a flat sealing face and precise bolt hole positions. It is suitable for mining, metallurgy, thermal power stations, high-pressure chemical, oil and gas transportation, shipbuilding and heavy industry, pressure vessels, and special equipment high-pressure pipeline systems. For specific diameters, pressure ratings, and material configurations, please contact us for confirmation.
Product Overview
Integrally cast flanged elbows are formed in one pour using an integral sand mold precision casting process, with no welding, splicing, or secondary assembly between the flange disc and the elbow body. This integrated structure avoids the common problems of weld slag inclusion, porosity, cracks, and false welding in ordinary welded flanged elbows, with high structural density and uniform wall thickness, suitable for pipeline systems with high pressure, high temperature, heavy loads, and flammable and explosive media. The product offers three angles: 45°, 90°, and 180°, divided into long radius R1.5D and short radius R1.0D curvatures; materials cover cast steel, ductile iron, stainless steel casting, and alloy casting; the flange uses bolt and gasket connection, with flat sealing surfaces and precise bolt hole positions.
Key Selling Points
First, integrally cast forming, no welds, no splicing, structurally eliminating the hidden dangers of weld cracking and leakage in welded elbows. Second, high structural density and uniform wall thickness, capable of withstanding high pressure, high temperature, and continuous medium erosion over the long term, with impact resistance and deformation resistance. Third, complete angle and curvature specifications, with three angles of 45°, 90°, and 180°, and options of long radius R1.5D and short radius R1.0D. Fourth, materials cover WCB cast steel, ZG230, ductile iron, 304 stainless steel, 316L stainless steel, and alloy steel, selectable according to working conditions. Fifth, integrally formed flange, flat sealing surface, precise bolt hole positions, convenient installation, and stable sealing. Sixth, supports drawing customization, non-standard angles, reducing integrated casting, and various sealing surface forms.
Applications
Integrally cast flanged elbows are mainly used in industrial piping systems requiring high pressure, high temperature, wear resistance, explosion-proof and leak-proof performance. Typical scenarios include high-temperature and high-pressure thermal power pipelines in thermal power stations, high-pressure acid and alkali transfer pipelines in chemical plants, high-pressure oil and gas transmission pipelines, wear-resistant erosion-resistant conveying systems in mines, high-temperature circulation pipelines in metallurgy, and high-pressure equipment pipelines in shipbuilding and heavy industry. Special equipment scenarios cover supporting pipelines for pressure vessels, high-pressure boiler connecting pipelines, conveying systems in explosion-proof chemical workshops, and high-pressure water conveyance projects in water conservancy pump stations. They are also suitable for replacing old high-pressure pipe fittings and for upgrading impact-medium conveying pipelines.
Specifications
Angles: 45°, 90°, 180°. Curvature radius: R1.5D long radius, R1.0D short radius. Diameter specifications: DN25-DN1200, wall thickness thickened and customized according to high-pressure grade. Pressure ratings: national standard PN25-PN160, American standard Class300-Class1500. Commonly used materials: WCB cast steel, ZG230, ductile iron, 304 stainless steel, 316L stainless steel, alloy steel. Working temperature: cast steel -20℃~450℃, stainless steel -80℃~650℃. Connection method: flange bolt connection. Executive standards: GB/T12459, GB/T9113, ASME B16.5, ISO2531, EN545. For customization requirements such as special angles, reducing sizes, and sealing face forms, please contact us for confirmation.
Procurement & Delivery
The MOQ for conventional in-stock standard high-pressure models is 1 piece, including commonly used 90°, PN40/PN64, conventional-diameter cast steel and ductile iron styles, supporting emergency repairs and pipe fitting replacement at construction sites. The warehouse regularly stocks conventional high-pressure in-stock specifications, and ships quickly within 24 hours after order confirmation. For the delivery time of conventional standard high-pressure orders and high-pressure non-standard customized orders, please contact us for confirmation. Packaging uses high-pressure industrial-grade thickened protection: carbon steel castings are sprayed with anti-rust oil, stainless steel castings receive anti-oxidation protection, and flange sealing faces are affixed with thickened protective film; small and medium diameters use multi-layer bubble wrap plus thickened hard cardboard boxes, while medium and large diameter heavy castings use stretch film wrapping plus solid wood pallet fixing and steel strap locking. The outer box is marked with product model, angle, pressure, material, specification, batch, and executive standard. Customized export fumigation wooden pallets, waterproof and rainproof packaging, and foreign trade shipping marks are supported.
Service & Support
All products undergo 100% non-destructive testing and full high-pressure pressure testing before leaving the factory, and genuine products have a unified 18-month warranty period. During the warranty period, for cracking, leakage, and structural defect problems not caused by human impact or overpressure use, free replacement, free reissue, and round-trip logistics costs are covered. Before sales, free services are provided for high-pressure working condition selection, parameter matching, drawing verification, solution optimization, and budget quotation; during sales, the full progress of casting, machining, quality inspection, and shipping is synchronized in real time; after sales, technical guidance for high-pressure pipeline installation, working condition adaptation Q&A, and troubleshooting services are provided. For large high-pressure engineering projects, remote technical disclosure and full-process technical follow-up can be provided. Unused standard products with intact packaging support seven-day no-reason return and exchange, after-sales issues are connected within 2 hours, and a solution is issued on the same day.
FAQ
What is the difference between integrally cast flanged elbows and ordinary welded flanged elbows?
Integrally cast flanged elbows are formed by one-piece casting, with no weld seam and no splicing between the flange and the elbow body, featuring a dense structure, high pressure-bearing capacity, and no hidden leakage risks, making them suitable for high-pressure, high-temperature, and explosion-proof working conditions. Ordinary welded flanged elbows have weak weld seam areas and are prone to cracking and leakage under high pressure, so they are generally only suitable for medium- and low-pressure ordinary pipelines. For high-pressure engineering, integrally cast styles are recommended.
What angles and curvature radii are available for integrally cast flanged elbows?
Conventional angles include 45°, 90°, and 180°, and curvature radii are divided into long radius R1.5D and short radius R1.0D. In addition, customization is also supported for special non-conventional angles such as 22.5°, 60°, and 120°, as well as special arc structures with extra-large curvature. For specific angle and curvature combinations, please contact us for confirmation.
What materials are commonly used for integrally cast flanged elbows?
Common materials include WCB cast steel, ZG230, ductile iron, 304 stainless steel, 316L stainless steel, and alloy steel. We can also customize 2205 duplex steel, high-temperature and high-pressure special alloy steel, and wear-resistant alloy materials. In terms of operating temperature, cast steel parts range from -20℃ to 450℃, and stainless steel parts range from -80℃ to 650℃. For material selection, we recommend considering the medium, temperature, and pressure conditions. You are welcome to contact us for assistance in confirming.
What are the minimum order quantity and delivery time for integrally cast flanged elbows?
For regular in-stock standard high-pressure models, the MOQ starts at 1 piece, including commonly used 90°, PN40/PN64, and regular-diameter cast steel and ductile iron styles, supporting emergency repairs and pipe fitting replacement at construction sites. The warehouse regularly stocks conventional high-pressure in-stock specifications, and ships quickly within 24 hours after order confirmation. For the delivery time of regular standard high-pressure orders and high-pressure non-standard customized orders, please contact us to confirm.
Do integrally cast flanged elbows support customization?
We support full-dimensional customization, including special angles, one-piece casting with reducing diameters, full high-pressure ratings from PN16 to PN160, Class150-Class1500 American standard series, RF/MFM/TG/RJ various sealing surfaces, surface processes such as sandblasting/blackening/anti-rust coating/hot-dip galvanizing/pickling and passivation, as well as drawing customization, sample replication, and laser marking of LOGO. Please provide drawings or dimensions, quantity, and working condition requirements, and we will assist in confirming the configuration and providing a quotation.
