Elbow Branch Outlet
The Elbolet elbow branch outlet is a specialized branch pipe fitting for non-destructive opening on the outer wall of high-pressure pipe elbows, with built-in equal-area reinforcement. It primarily solves the engineering challenges where co
Inquiry
- The core advantages of the Elbolet elbow branch outlet are its dedicated elbow curved-surface forming, integrally forged with built-in equal-area reinforcement, precise curvature fit, elimination of stress from opening holes in bent pipes,
- it is a dedicated high-end pipe fitting that straight-pipe branch outlets cannot replace. The entire body is integrally hot-forged with no splicing welds
- the material is dense and uniform, with excellent fatigue resistance, erosion resistance, pressure resistance, and high-temperature resistance
- Fully compliant with MSS SP-97 high-pressure piping reinforcement standard
- No additional reinforcement pad needed
Detailed Introduction
The elbow branch outlet we supply is integrally forged in one piece, and the base curved surface is precisely machined according to the outer arc of the elbow, so that after welding it can form an equal-area reinforcement structure with the parent elbow. Unlike conventional straight-pipe branch outlets, it specifically solves the problems that straight-pipe branch outlets cannot be installed at the elbow position and that on-site opening reinforcement is non-compliant. The product complies with MSS SP-97, ASME B16.9, ASME B16.11, and GB/T19326 standards, is suitable for main pipes from NPS2 to NPS48 and branch pipes from NPS1/8 to NPS4, and covers pressure ratings of 3000LB and 6000LB. The branch end provides three types of connections: butt welding, socket welding, and threaded, and the materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 alloy steel, 2205 duplex steel, and nickel-based alloy. It is commonly used at points such as pressure and temperature measurement on high-pressure process elbows in petrochemicals, blowdown and venting on steam elbows in thermal power, sampling on bent pipes in coal chemical processing, and pressure relief on thick-wall elbows in natural gas.
- The base curved surface is precisely machined according to the outer arc of the elbow, fitting long-radius and short-radius elbows, and after welding the reinforcement area is equivalent to that of the parent pipe, with no need for additional reinforcement pads.
- Integrally forged in one piece, with no spliced welds, the material is dense and uniform, adapting to alternating stress in bent pipes and medium erosion conditions.
- It provides three branch-pipe connection types: butt welding, socket welding, and threaded, which can be selected according to the connection method of instruments, valves, and process piping.
- It covers carbon steel, low-temperature steel, stainless steel, alloy steel, duplex steel, and nickel-based alloy, adapting to different media and temperature conditions.
- It complies with reinforcement pipe fitting standards such as MSS SP-97, and is suitable for elbow branch projects with acceptance compliance requirements.
- It supports reverse customization according to overseas drawings or old dismantled pipe fittings, and the curved surface arc, reducing ratio, and surface treatment can be adjusted.
| Product Name | Elbow Branch Outlet |
| Product Category | Contact Us to Confirm |
| Standards | MSS SP‑97, ASME B16.9, ASME B16.11, GB/T19326; pressure rating: 3000LB, 6000LB; suitable wall thickness: STD, XS, SCH80, SCH160, XXS thickened high-pressure wall thickness; suitable base: LR long-radius elbow, SR short-radius elbow; diameter range: main pipe NPS2‑NPS48, branch pipe NPS1/8‑NPS4; structure type: equal-diameter elbow branch outlet, reducing elbow branch outlet, thickened high-pressure reinforced type; connection form: BW butt welding type, SW socket welding type, T threaded type (NPT/BSPT/RC); forming process: integral die forging in one piece, precision curved surface CNC machining; flaw detection |
| Customization | Our factory possesses full-dimensional heavy-industry high-end non-standard customization capabilities for Elbolet elbow branch outlets, and can comprehensively meet the supporting needs of high-pressure bent-pipe networks, special elbow adaptation, old pipeline renovation, and overseas non-standard projects at home and abroad. We can customize dedicated suitable for styles with long and short radii, extra-large main pipes paired with extremely small branch pipes, and ultra-high-pressure thickened and reinforced elbow branch outlets, suitable for ultra-high-pressure, strong-scouring, and high-stress severe bent-pipe working conditions. We support customization of all connection methods, including switching among BW butt welding, SW socket welding, and T threaded structures, and can customize non-standard thread types such as NPT, BSPT, and RC as needed, adapting to the connection needs of imported valves and instruments from various countries. We support structural customization, including non-standard curved surface arcs, thickened body reinforcement structures, and special reducing ratios, adapting to non-standard wall thickness elbows and old |
| MOQ | Our factory's Elbolet elbow branch outlet adopts a flexible low-threshold minimum order mechanism for foreign trade, suitable for large and small batch heavy industry procurement both domestically and overseas, with flexible ordering and no mandatory threshold. Conventional carbon steel A105 3000LB/6000LB long radius, compatible with butt weld, socket weld, and threaded mainstream specifications, has an MOQ as low as 1 piece, which can fully meet engineering trial samples, elbow point technical modifications, and elbow leakage |
| Lead Time | Our factory maintains a massive ready stock of Elbolet branch outlet fittings in national standard and American standard, regular pressure ratings, regular diameters, and long-radius configurations. Inventory is ample for mainstream styles in carbon steel and stainless steel, including butt weld, socket weld, and threaded types. In-stock orders ship within 24 hours at maximum speed, quickly responding to the procurement needs of overseas heavy industry urgent orders, bent-pipe network emergency repairs, instrument point modifications, project rush work, and tight-schedule requirements. Regular |
| Packaging | The factory's Elbolet elbow branch outlet, as a precision curved-surface high-pressure forged pipe fitting, adopts fine protective export packaging at the level of foreign trade heavy industry, focusing on protecting the exclusive elbow fitting curved surface, welding groove, thread profile, and machined port, eliminating transportation collisions, curved surface deformation, scratches and rust, thread stripping and damage, and precision loss. 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 pickling and passivation and deoxidation treatment, and can withstand the salt spray and humid environment of ocean shipping, eliminating the problems of rust returning during sea transport and mottled surfaces. Threaded ports are equipped with special plastic thread protector caps, and shock-absorbing protective rubber pads are attached to the groove and curved surface fitting surfaces, comprehensively protecting the precision working surfaces from damage. Each piece is individually |
| Reference Price | Inquiry |
Applications
- At the elbow position of high-pressure process piping in petrochemical plants, pressure and temperature instrument connections are led out; this is used when the straight pipe section space is insufficient.
- High-pressure steam elbow drainage and vent branch for thermal power plants, replacing the simple on-site practice of drilling holes and adding reinforcement plates.
- For the bent pipe sampling interface of a coal chemical reaction unit, a sampling branch needs to be led out directly at the elbow.
- Natural gas thick-wall high-pressure elbow pressure-relief branch, requiring the reinforcement structure to have equal area to the main pipe.
- Instrumentation points on anti-corrosion high-pressure elbows for offshore platforms, in pipe rack areas with dense elbows and limited space.
Overview
An Elbolet is an integrally forged equal-area reinforced branch fitting, specifically designed for welding a branch onto the outer wall arc surface of a 90° long-radius or short-radius elbow. Unlike conventional branch outlets (Weldolet) installed on straight pipe sections, its base curved surface is machined according to the elbow curvature, and after welding, the branch strength is equivalent to that of the parent elbow, with no need to make an additional opening on the straight pipe section, and no need to install a reinforcement pad. The Elbolets we supply comply with MSS SP-97, ASME B16.9, ASME B16.11, and GB/T19326 standards, suitable for run pipe NPS2 to NPS48, branch NPS1/8 to NPS4, with pressure ratings covering 3000LB and 6000LB. The branch end can be made with butt weld, socket weld, or threaded connections, and materials cover carbon steel, low-temperature steel, stainless steel, alloy steel, duplex steel, and nickel-based alloy.
Key Features
First, the base curved surface is precisely machined according to the elbow outer arc, fitting long-radius and short-radius elbows, and after welding, the reinforcement area is equivalent to that of the parent pipe, eliminating the need for an additional reinforcement pad. Second, it is integrally die-forged in one piece, with no splice welds, dense and uniform material, capable of withstanding alternating stress of the elbow and medium erosion. Third, the branch end offers three connection types: butt weld, socket weld, and threaded, which can be selected according to the connection method of instruments, valves, and process piping. Fourth, materials cover carbon steel, low-temperature steel, stainless steel, alloy steel, duplex steel, and nickel-based alloy, adapting to different media and temperature conditions. Fifth, it implements MSS SP-97 and other reinforcement fitting standards, suitable for elbow branch projects with acceptance compliance requirements. Sixth, it supports reverse customization according to overseas drawings or old dismantled pipe fittings, with adjustable curved surface curvature, reducing ratio, and surface treatment.
Applications
Elbolets are mainly used for high-pressure pipelines where there is insufficient space on straight pipe sections and branches can only be led out at the elbow position. Typical scenarios include: pressure and temperature instrumentation connections on high-pressure process elbows in petrochemical plants; blowdown and vent branches on high-pressure steam elbows in thermal power plants; sampling connections on elbows in coal chemical reaction units; pressure relief branches on thick-walled high-pressure elbows in natural gas service; instrumentation points on anti-corrosion high-pressure elbows for offshore platforms; and technical modification replacement of leaked points on old high-pressure elbows. The common feature of these scenarios is that a branch needs to be led out at the elbow position, but conventional straight-pipe branch outlets cannot be installed, and the on-site method of making an opening and adding a reinforcement pad is difficult to meet acceptance requirements.
Specifications
Implemented standards are MSS SP-97, ASME B16.9, ASME B16.11, and GB/T19326. Pressure ratings are 3000LB and 6000LB. Diameter range: run pipe NPS2 to NPS48, branch NPS1/8 to NPS4. Compatible elbow types are 90° long-radius (LR) and short-radius (SR) elbows. Connection forms include butt weld (BW), socket weld (SW), and threaded (NPT/BSPT/RC). Optional materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 alloy steel, 2205 duplex steel, and nickel-based alloy. Forming process is integral die forging in one piece and precision curved surface CNC machining. Applicable wall thicknesses include STD, XS, SCH80, SCH160, XXS; for other wall thicknesses, please contact us for confirmation. Customization options include non-standard curved surface curvature, thickened body, special reducing ratio, non-standard thread form, hot-dip galvanizing, pickling and passivation, mirror polishing, laser marking, LOGO engraving, and batch coding.
Purchase & Delivery
For conventional carbon steel A105 3000LB/6000LB long-radius compatible butt weld, socket weld, and threaded mainstream specifications, the minimum order quantity is as low as 1 piece, suitable for engineering samples, elbow point technical modification, and elbow leak emergency repair. For minimum order quantities of other specifications and materials, please contact us for confirmation. We routinely keep in stock domestic standard and American standard conventional pressure, conventional diameter, long-radius compatible styles; carbon steel and stainless steel butt weld, socket weld, and threaded mainstream styles are well stocked, and in-stock orders ship within 24 hours. For lead times of non-standard customization and special materials, please contact us for confirmation. Packaging uses foreign trade heavy-industry-grade protection: carbon steel parts are sprayed with anti-rust oil, stainless steel parts are pickled and passivated; threaded ports are fitted with plastic thread protectors, and bevels and curved surface fitting faces are affixed with shock-absorbing rubber pads; each piece is individually wrapped in bubble film and pearl cotton; small and medium specifications are packed in thickened moisture-proof export cartons, and large-diameter heavy-duty styles use fumigated solid wood pallets, secured with steel straps and waterproof film. The outer packaging is marked with compatible elbow type, specification, pound rating, connection method, material, standard, batch, and export shipping marks, and supports neutral unbranded packaging.
Service & Support
We provide Elbolet selection guidance, welding and installation process recommendations, and curved surface fitting adjustment support. Before leaving the factory, products undergo appearance screening, precision inspection of curved surface curvature, port and thread verification, dimensional calibration, and non-destructive testing. If after receiving the goods there are original factory quality defects, wrong specifications shipped, incompatible elbow fit, poor curved surface fitting, or transport damage, please contact us, and we will assist in confirming and arrange replacement, return or exchange, or re-customization. We can provide parameter drawings and process documents, and support long-term customer inventory custody, partial shipments, and replenishment on demand. For quality issues not caused by human damage, please contact us to confirm the after-sales solution.
FAQ
What is the difference between an Elbolet and a conventional straight-pipe branch outlet?
Ordinary branch outlets are installed on straight pipe sections, and the base is flat or machined according to the outer diameter of the straight pipe. The curved base of an elbow branch outlet is precisely machined according to the outer arc of the elbow, specifically fitting 90° long-radius or short-radius elbows. After welding, the reinforcement area is equivalent to that of the parent pipe, and there is no need to make additional openings in the straight pipe section, nor is there any need to install reinforcement pads.
How to choose among the three connection types: butt welding, socket welding, and threaded?
For permanent process branches at elbow locations, butt-welded type is usually selected; for fixed temperature and pressure measurement instrument points, socket-welded type is selected; for sampling, blowdown, or points requiring quick-install valve components, threaded type is selected. For specific selection, you can contact us to confirm according to your pipeline connection method and instrument interface.
Can an elbow branch outlet fitting be adapted to a non-standard elbow?
Standard products are compatible with standard long-radius and short-radius elbows. If your elbow has a non-standard curvature, is an old or irregular bent pipe, or needs to be reverse-customized based on a disassembled part, please contact us and provide elbow drawings or physical dimensions, and we can confirm a customized solution according to project requirements.
What are the minimum order quantity and delivery time for regular specifications?
Regular carbon steel A105 3000LB/6000LB long-radius compatible butt weld, socket weld, and threaded mainstream specifications have a minimum order quantity as low as 1 piece. We regularly keep in stock national standard, American standard regular pressure, regular diameter, and long-radius compatible styles, and in-stock orders ship within 24 hours. For non-standard customization and special materials, please contact us to confirm the minimum order quantity and delivery time.
What standards does the product comply with? What materials are available?
Complies with MSS SP-97, ASME B16.9, ASME B16.11, and GB/T19326 standards. Materials include carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 alloy steel, 2205 duplex steel, and nickel-based alloys. For other material requirements, please contact us for confirmation.
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