Flanged branch outlet
Flangolet flange-type branch outlet is an integrated flanged non-destructive opening reinforcement branch pipe fitting for high-pressure pipelines, primarily solving the engineering pain points of traditional flanged branching such as cumbe
Inquiry
- The core advantages of the Flangolet flanged branch outlet are its one-piece forged three-in-one structure, a single weld seam with zero redundant leak points, built-in equal-area reinforcement, standard flange precision, quick disassembly
- Its overall performance far exceeds the traditional split flanged branch process. The integral hot forging has no spliced weld seams
- The material is dense and uniform, resistant to pressure and fatigue, and the structural strength is stable
- Fully compliant with MSS SP-97 high-pressure reinforcement standard
- No extra reinforcement pad needed
Detailed Introduction
Flanged branch outlet belongs to MSS SP-97 integrally forged one-piece flanged reinforced branch outlet fitting; the branch end is directly forged with a standard flange face, the saddle base fits the outer wall of the main pipe for welding, and the one-piece molding comes with equal-area reinforcement. Compared with the traditional multi-step process of opening a hole and welding a branch, welding a nipple, and then welding a flange, this structure combines three pieces into a single forged piece, and on site only one welding seam with the main pipe needs to be completed, reducing the leakage risk caused by multiple layers of welding seams. The flange face is implemented per ASME B16.5, domestically equivalent to GB/T19326, and the body design follows MSS SP-97. The main pipe covers NPS2 to NPS48, the branch covers NPS1 to NPS12, the flange pressure rating ranges from Class150 to 2500#, and the sealing face options include RF raised face, RTJ ring joint face, and FF full flat face. Materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 chrome-molybdenum alloy steel, 2205 duplex steel, and nickel-based alloys. It is suitable for valve groups, instruments, filters, and bypass interfaces that require flanged detachable connection, and is especially suitable for branch points that require frequent disassembly for inspection and maintenance, and isolation and shutoff.
- Integrally forged and molded, the branch outlet, nipple, and flange are combined into one piece, and on site only one welding seam with the main pipe is needed, reducing leakage points
- Comes with MSS SP-97 equal-area reinforcement, no additional reinforcement plate is needed after opening the hole, and the main pipe strength is reinforced
- The flange face is implemented per ASME B16.5, and the bolt hole positions and sealing face precision are machined according to the standard, allowing direct connection to valves, filters, and instrument assemblies
- Supports three sealing face types: RF raised face, RTJ ring joint face, and FF full flat face, covering pressure ratings from Class150 to 2500#
- Material options cover carbon steel, low-temperature steel, stainless steel, chrome-molybdenum alloy steel, duplex steel, and nickel-based alloys, adapting to different media and working conditions
- Can customize non-standard reducing size ratios, extended-neck insulation type, and thickened body reinforcement structure, and supports reverse customization according to overseas drawings or old imported dismantled pipe fittings
| Product Name | Flanged Branch Outlet |
| Product Categories | Contact Us to Confirm |
| Standards | MSS SP-97, ASME B16.5, GB/T19326; pressure classes: Class150#, 300#, 600#, 900#, 1500#, 2500#; applicable wall thickness: STD, XS, SCH80, SCH160, XXS full series high-pressure wall thickness; size range: main pipe NPS2-NPS48, branch NPS1-NPS12; sealing face types: RF raised face, RTJ ring joint face, FF full flat face; structure types: equal-diameter flanged branch outlet, reducing flanged branch outlet, extended-neck insulation type, ultra-high-pressure thickened type; forming process: integral die forging one-piece molding, precision CNC finishing of the flange face; inspection standard: 100% PT penetration, |
| Customization | Our factory possesses full-dimensional high-end non-standard customization capabilities for Flangolet flanged branch outlets, and can comprehensively meet the supporting needs of high-pressure flange pipe networks at home and abroad, special valve group connections, old pipeline renovations, and overseas non-standard project support. We can customize any non-standard reducing ratio, extra-large main pipe with small flange branch outlet, Class 2500# ultra-high-pressure thickened and reinforced flanged branch outlet, suitable for ultra-high-pressure and highly hazardous corrosive severe working conditions. We support full sealing surface structure customization, with RF, RTJ, and FF freely switchable, and can customize non-standard bolt hole spacing and special flange outer diameters as needed, suitable for connecting with imported high-end valve components and instrument equipment from various countries. We support structural customization, including extended neck insulation-specific models, thickened body reinforced structures, and non-standard saddle curved surfaces suitable for special thick-walled main pipes, suitable for |
| MOQ | Our factory's Flangolet flanged branch outlet adopts a flexible low-threshold minimum order mechanism for foreign trade, suitable for both large and small batch procurement by high-end heavy industry at home and abroad, with flexible ordering and no mandatory threshold. For conventional carbon steel A105 and stainless steel 304/316L Class150#-1500# mainstream RF raised face standard specifications, the MOQ is as low as 1 piece, which can fully satisfy high-end engineering |
| Lead Time | Our factory maintains a massive in-stock inventory of Flangolet branch outlet flanges in national standard and American standard conventional pressure ratings, conventional sealing faces, and conventional diameters. Carbon steel and stainless steel RF mainstream styles are fully stocked. In-stock orders ship within 24 hours at express speed, quickly responding to overseas high-end heavy industry urgent orders, flange pipeline network emergency repairs, valve group modifications, project rush work, and procurement needs with tight schedules. Conventional standard batch |
| Packaging | Our factory's Flangolet flanged branch outlet, as a high-end precision forged flanged pipe fitting, adopts foreign trade heavy-industry-grade refined full-protection export packaging, with key protection for the saddle fitting arc surface, flange sealing surface, bolt holes, and machined end faces, eliminating transport collisions, sealing surface scratches, hole position deformation, and rust contamination or blockage. All products undergo professional anti-rust treatment before leaving the factory. Carbon steel parts are sprayed with long-acting industrial anti-rust oil, sealing the metal surface to isolate oxidation and rust; stainless steel parts undergo acid pickling and passivation and mirror polishing treatment, capable of withstanding ocean shipping salt spray and humid environments, eliminating re-rusting and oxidation. Special anti-vibration protective rubber pads are attached to the flange sealing surfaces, and dust plugs are installed in the bolt holes, providing all-round protection for the precision sealing working surfaces. Each individual piece is fully wrapped and cushioned with thickened bubble wrap and pearl cotton. |
| Reference Price | Inquiry |
Applications
- On petrochemical high-pressure process pipelines, valve group branch points with flanged removable connections are required to facilitate individual valve disassembly, assembly, and maintenance.
- Instrument connections and bypass connections in the high-pressure steam pipe network of thermal power plants that require isolation, shutoff, or sectional pressure test acceptance
- Flange vent bypass for high-pressure thick-wall natural gas pipelines, requiring reduction of the number of welds and lowering the risk of leakage
- In the branch pipe sections of the high-risk medium pipeline network of the coal chemical industry where instrument assemblies or filters need to be regularly disassembled
- Flange pipe network branches under salt spray corrosion environments on offshore platforms require stainless steel or duplex steel materials combined with anti-corrosion surface treatment.
Overview
The flanged branch outlet (Flangolet) is an integrally forged branch pipe fitting in which the branch end is directly forged with a standard flange face, belonging to the MSS SP-97 integrally forged one-piece flanged reinforced branch outlet. The saddle base fits against and is welded to the outer wall of the main pipe, integrally formed with built-in equal-area reinforcement, merging the three-piece structure of branch outlet, nipple, and separate flange into a single forging, requiring only one weld seam to the main pipe on site. This structure reduces the leakage risks associated with traditional multiple weld seams, while the flange face is machined to ASME B16.5, allowing direct connection to valves, filters, instrument assemblies, bypass pipelines, and other equipment. Products cover main pipe NPS2 to NPS48, branch NPS1 to NPS12, pressure ratings Class150 to 2500#, sealing faces available in RF, RTJ, FF, and materials covering carbon steel, low-temperature steel, stainless steel, chrome-molybdenum alloy steel, duplex steel, and nickel-based alloys.
Key Features
First, integrally forged and formed, three pieces in one, requiring only one main pipe weld seam on site, reducing leakage points and eliminating multiple docking procedures. Second, built-in MSS SP-97 equal-area reinforcement, no additional reinforcement plate needed after opening, and the main pipe strength is reinforced. Third, the flange face is integrally formed, with bolt hole positions and sealing face machined to standard, allowing direct connection to valves, filters, instrument assemblies, and other equipment, facilitating disassembly and isolation. Fourth, sealing faces available in RF raised face, RTJ ring joint face, FF full flat face, with pressure ratings covering Class150 to 2500#, adapting to different working conditions. Fifth, multiple material options, allowing selection of carbon steel, stainless steel, duplex steel, or nickel-based alloy based on media and corrosion conditions. Sixth, support for non-standard customization, including non-standard reducing, extended neck, thickened body, special flange outer diameter and bolt hole spacing, etc.; please contact us for confirmation of specifics.
Applications
Flanged branch outlets are mainly used for high-pressure pipeline branch points that require flanged detachable connections, frequent disassembly and maintenance, isolation and shutoff, and sectional pressure testing and acceptance. Typical scenarios include flange valve group branches on petrochemical high-pressure process pipelines, isolation and maintenance interfaces on thermal power plant high-pressure steam networks, flanged vent bypasses on natural gas high-pressure thick-wall pipelines, detachable instrument assembly points on coal chemical high-risk media pipeline networks, salt spray anti-corrosion flanged pipe networks on offshore platforms, and critical branch pipe sections requiring sectional pressure testing and acceptance in industrial installations. For working conditions that do not allow multiple weld seams, require periodic disassembly of valve components for maintenance, and require pipeline isolation and plugging, this one-piece flanged branch structure is more convenient for operation and maintenance than the traditional process of opening and welding plus nipple plus split flange.
Specifications
The body design follows MSS SP-97, the flange face is manufactured to ASME B16.5, and the domestic equivalent is GB/T19326. Main pipe nominal diameter NPS2 to NPS48, branch nominal diameter NPS1 to NPS12. Flange pressure ratings cover Class150#, 300#, 600#, 900#, 1500#, 2500#. Sealing face types include RF raised face, RTJ ring joint face, FF full flat face. Compatible wall thicknesses include STD, XS, SCH80, SCH160, XXS; for other wall thicknesses, please contact us for confirmation. Structural types include equal-diameter flanged branch outlet, reducing flanged branch outlet, extended neck insulation type, and ultra-high pressure thickened type. The forming process is integral die forging one-piece forming, with flange face precision CNC finish machining. Non-destructive testing standard is 100% PT penetrant testing; for other testing requirements, please contact us for confirmation. Materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 chrome-molybdenum alloy steel, 2205 duplex steel, and nickel-based alloys.
Procurement & Delivery
For conventional carbon steel A105, stainless steel 304/316L, Class150# to 1500# mainstream RF raised face standard specifications, the minimum order quantity is as low as 1 piece. Conventional national standard, American standard conventional pound ratings, conventional sealing faces, and conventional diameters are kept in stock, and in-stock orders ship within 24 hours. For non-standard customization, special materials, special pressure ratings, or special sealing faces, please contact us for confirmation of lead time and minimum order quantity. Regarding packaging, carbon steel parts are coated with long-lasting industrial anti-rust oil, stainless steel parts undergo pickling and passivation treatment; flange sealing faces are covered with protective rubber pads, bolt holes are fitted with dust plugs; small and medium specifications are packed in thickened moisture-proof export cartons, large-diameter heavy-duty models are packed on fumigated solid wood pallets, with overall steel strapping and waterproof film covering. The outer packaging is marked with pound rating, sealing face, specification, material, standard, batch number, and export shipping marks, supporting neutral unbranded packaging, LOGO private labeling, and custom project-specific shipping marks.
Service & Support
We provide selection guidance for flanged branch outlets, welding and installation process recommendations, flange connection sealing and adjustment recommendations, and valve group disassembly and maintenance solutions. Before leaving the factory, products undergo appearance screening, saddle arc surface inspection, flange sealing face calibration, hole position precision verification, and non-destructive testing. If after receipt you find problems such as original factory quality defects, wrong specifications shipped, sealing face defects, incorrect hole positions, or transportation deformation, please contact us and we will assist in handling them. We support reverse customization based on overseas drawings or old imported dismantled pipe fittings, and support laser marking, LOGO engraving, and batch coding. For long-term customers, we can provide inventory consignment management, partial shipments, on-demand replenishment, and price-locked stocking services; please contact us for confirmation of specifics.
FAQ
What is the difference between flanged branch outlets and traditional flanged branch methods?
Traditional flange branches usually require drilling a hole, welding a branch pipe, welding a nipple, and then welding a flange, resulting in multiple welds on site. The flanged branch outlet merges the branch outlet, nipple, and flange into a single integral forging, requiring only one weld to the main pipe on site, reducing the number of welds and potential leak points, and also eliminating multiple butt-jointing steps.
What working conditions are suitable for selecting a flanged branch outlet?
It is suitable for selecting a flanged branch outlet when flanged removable connection, frequent disassembly and maintenance, pipeline isolation and shutoff, sectional pressure testing and acceptance, or high-pressure pipeline branch points that do not allow multi-layer weld leakage are required. It is commonly found in valve groups, instruments, filters, and bypass interfaces in industries such as petrochemicals, thermal power, coal chemical, oil and gas, and offshore engineering.
How to choose among the three sealing faces RF, RTJ, and FF?
RF raised face can be selected for conventional working conditions; RTJ ring joint face can be selected for working conditions such as high-temperature and high-pressure oil and gas that require metal ring gasket sealing; FF full flat face is suitable for specific flange connection requirements. The specific selection needs to be combined with the flange sealing face form, medium, and pressure rating of the connecting equipment; please contact us for confirmation.
What materials and pressure ratings are supported by the flanged branch outlet?
Materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 chrome-molybdenum alloy steel, 2205 duplex steel, and nickel-based alloys. Pressure ratings cover Class 150#, 300#, 600#, 900#, 1500#, and 2500#. For special materials or special pressure ratings, please contact us for confirmation.
What are the minimum order quantity and delivery time?
Regular carbon steel A105, stainless steel 304/316L, Class150# to 1500# mainstream RF raised face standard specifications have a minimum order quantity as low as 1 piece. Regular standard specifications are kept in stock, and in-stock orders ship within 24 hours. For non-standard customization, special materials, or special pressure ratings, please contact us to confirm the delivery time and minimum order quantity.
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