Union branch outlet
The union branch outlet is formed by integral hot forging, with the saddle base fitting the outer wall of the main pipe for welding, and the branch end comes with an MSS SP-83 standard high-pressure union, allowing quick unscrewing for maintenance, isolation of instruments and valves, without the need to cut the pipeline or dismantle welds. The body reinforcement follows MSS SP-97, the union seal and threads comply with ASME B16.11 and MSS SP-83, with domestic equivalents GB/T19326 and GB/T14383. Main pipe NPS2-NPS48, branch NPS1/8-NPS2, pressure ratings 3000LB and 6000LB, sealing available in two types: spherical hard seal and gasket soft seal. Materials cover carbon steel A105, LF2 low-temperature steel, 304/316L stainless steel, F11/F22 chrome-molybdenum alloy steel, 2205 duplex steel, and nickel-based alloys. Suitable for high-pressure instrument branch projects with dense instruments, high-frequency disassembly and assembly, prohibition of hot work, and requirements to reduce weld leakage points.
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Carbon Steel Branch Outlet
Carbon steel branch outlet (also called saddle, branch reinforcement pad) is used to create an opening on the side wall of the main pipe to lead out a branch, commonly found in pipeline systems for petroleum, chemical, power, and other industries. The product is forged from carbon steel, comes with a self-reinforcing structure, and can complete the branch simply by welding onto the outer wall of the main pipe, without the need to cut the entire main pipe, which helps shorten on-site construction time. Material options include A105, Q235B, A350 LF2, etc. Pressure coverage includes American standard Class150 to Class1500 and national standard PN10 to PN100. Main pipe compatibility ranges from DN20 to DN800, and branch pipe compatibility ranges from DN15 to DN300. Connection methods include butt welding, socket welding, and threading. It can be produced according to standards such as ASME and GB, and also supports customization of non-standard sizes and angles. Before purchasing, it is recommended to confirm the medium, temperature, pressure rating, connection method, and required specifications. You are welcome to contact us for assistance with selection and quotation.
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Stainless Steel Branch Outlet
The stainless steel branch outlets (forged branch fittings/Olets) we supply are integrally forged and formed in accordance with the MSS SP-97 standard, and are manufactured through die forging, heat treatment, and precision machining. During installation, a hole is opened directly in the wall of the main pipe to lead out the branch pipe, without the need to cut off the main pipe; they come with an integrated reinforcement structure used to distribute stress at the opening location. In terms of material, A182 F304, F304L, F316, and F316L are conventionally selected, and special stainless steels such as F321, F347H, and F904L can also be confirmed according to project requirements. Connection forms include butt welding, socket welding, threaded, and 45° miter, with pressure ratings covering 2000LB to 9000LB, specifications from DN6 to DN100, and pipe wall coverage from SCH40 to XXS. The products are mainly used in scenarios such as chemical acid and alkali fluid pipelines, food and pharmaceutical clean pipelines, seawater desalination transportation pipelines, new energy process pipelines, and high-temperature steam pipelines. Standard specifications are in stock, and non-standard customization according to drawings is also supported.
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Alloy Steel Branch Outlet
Alloy steel branch outlet (forged alloy steel branch outlet fitting / Alloy Steel Olet) is integrally die-forged in accordance with MSS SP-97, GB/T19326, and ASME B31.3 standards, and is manufactured from alloy steel forged blanks through forging, heat treatment, and precision machining. Its function is to open a hole in the side wall of the main pipe to lead out a branch, completing a pipeline branch without cutting off the main pipeline; the integrated forged body has a built-in reinforcement structure, used to disperse stress at the opening. Connection forms include butt welding, socket welding, threaded, and 45° mitered, with specifications covering DN6-DN100 and pressure ratings covering 2000LB-9000LB. Commonly used materials include A182 F11, F12, F22 chrome-molybdenum alloy steel, as well as F5, F9 heat-resistant chrome steel and F91, F92 martensitic heat-resistant alloy steel. The conventional working temperature is -29℃ to 650℃, and F91/F92 materials can withstand higher temperature working conditions. We simultaneously support standard in-stock supply and non-standard customization according to drawings.
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Duplex Stainless Steel Branch Outlet
Duplex steel branch outlet (forged duplex steel branch outlet fitting, Duplex Steel Olet) is integrally die-forged in accordance with MSS SP-97, GB/T19326, and ASME B31.3 standards, and belongs to the integrated reinforced type pipe branch fitting. The product does not require cutting the main pipe; it is directly welded to the outer wall of the main pipe to achieve branch outlet extraction, and comes with an integrated reinforcement structure, used to resolve stress concentration at the pipe opening location. Duplex steel combines austenitic and ferritic structures, with a yield strength approximately 2 times that of ordinary 316L stainless steel, and performs outstandingly in resistance to chloride ion pitting corrosion, crevice corrosion, and sulfide stress corrosion cracking, making it suitable for highly corrosive working conditions such as seawater, salt spray, and acidic media. Connection forms include butt welding, socket welding, threaded, 45° miter, etc., with nominal diameters covering DN6-DN100. We support standard stock items and non-standard customization according to drawings, and can provide grade options such as 2205, 2507, 2101, and 2304.
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Low-temperature steel branch outlet
Low-temperature steel branch pipe outlets belong to integrated reinforced pipeline branch fittings. They are integrally die-forged and formed in accordance with MSS SP-97, GB/T19326, ASME B31.3, and ASME B31.8 standards, and are manufactured through forging, low-temperature heat treatment, impact testing, and precision machining. The product does not require cutting the main pipe; it is directly welded onto the outer wall of the main pipe to lead out a branch pipe. It comes with an integrated reinforcement structure, used to disperse stress at the pipe opening position and reduce the risk of brittle fracture and medium leakage caused by stress concentration in low-temperature environments. The materials are mainly ASTM A350 LF2 and A350 LF3 low-temperature forged steel. LF2 is suitable for temperatures from -46°C to 425°C, and LF3 is suitable for low temperatures down to -101°C. Pressure ratings cover American standard 2000LB, 3000LB, 6000LB, and 9000LB, nominal diameters from DN6 to DN100, wall thicknesses from SCH40 to XXS, and connection forms include butt welding, socket welding, NPT threads, and 45° miter joints. The main target customers are LNG engineering general contractors, air separation equipment installation contractors, low-temperature chemical infrastructure enterprises, oil and gas low-temperature transportation pipeline network construction units, as well as low-temperature pipe fitting traders and design institute selection personnel.
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Nickel-based alloy branch outlet
Nickel-based alloy branch outlet (forged nickel-based alloy branch outlet, Nickel Alloy Olet) is directly welded to the outer wall of the main pipe to lead out a branch pipe. It has an integral reinforcement structure, used to disperse stress at the pipe opening position and reduce the risk of cracking and medium leakage caused by stress concentration under high-temperature and highly corrosive working conditions. The product uses nickel as the base material and can withstand strong acids and alkalis, chloride ions, hydrogen sulfide, and high-temperature oxidizing environments, combining high-temperature strength and creep resistance. Connection forms include butt welding, socket welding, threaded, and 45° miter. Nominal diameters cover DN6-DN100, pressure ratings cover 2000LB-9000LB, and wall thicknesses cover SCH40S to XXS. It supports standard stock items and non-standard customization according to drawings, and is intended for pipe branch supporting in fine chemicals, hydrometallurgy, high-temperature desulfurization, deep-sea oil and gas, nuclear power auxiliary pipelines, and high-purity fluid projects.
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National Standard Branch Outlet
The national standard branch outlet (weldolet) implements the current national standard GB/T19326-2022 "Forged Branch Outlet Fittings," modified to adopt the MSS SP-97 international specification, and is an integrated reinforced forged branch pipe fitting dedicated to domestic pressure piping. The product is integrally die-forged from round steel forging blanks, manufactured through forging, heat treatment, non-destructive testing, and CNC precision machining, requiring no cutting of the main pipe, and is directly welded to the outer wall of the main pipe to achieve branch extraction, relying on the reinforcing structure built into the body itself to disperse stress at the opening location and reduce the risk of cracking and leakage under high-pressure working conditions. Connection structures cover butt welding, socket welding, threaded, 45° oblique connection, elbow type, extended type, and flanged type, with nominal diameters covering DN6-DN100, and materials covering carbon steel, stainless steel, alloy steel, low-temperature steel, and duplex steel. A full set of national standard factory documentation can be issued, supporting standard stock items and non-standard customization according to drawings, suitable for pipeline branch systems of domestic industrial piping and domestic EPC overseas general contracting projects.
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American standard branch outlet
American standard branch outlet, also known as American standard forged branch outlet fitting, is integrally die-forged from ASTM series forged blanks, and manufactured through forging, heat treatment, non-destructive testing, and CNC machining. During installation, there is no need to cut the main pipe; it is directly welded to the outer wall of the main pipe to lead out a branch, and relies on the integrated reinforcement structure of the body to offset the strength loss caused by the opening, thereby reducing the risk of cracking and leakage under high-pressure, high-temperature, low-temperature, and corrosive working conditions. Specifications cover NPS 1/8" to 4", pressure ratings from 3000LB to 9000LB, materials include carbon steel, low-temperature steel, alloy steel, stainless steel, duplex steel, and nickel-based alloys, and connection forms include butt welding, socket welding, NPT thread, 45° angled, extended, and elbow branch, etc. The products are commonly used in overseas EPC projects, foreign-funded factories, and oil and gas offshore platforms, support standard stock items and non-standard customization according to drawings, and are provided with English material and non-destructive testing reports.
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