Forged Reducer
The forged reducers we produce, also called forged reducers or high-pressure forged reducing joints, in English Forged Reducer, are integrally formed using a whole-piece forging process, with no welds or seams. The product specifications are concentrated in the small-diameter range of DN6–DN100, the pressure ratings cover Class3000, Class6000, and Class9000, and the materials include A105 carbon steel, 304/316L stainless steel, F11/F22 alloy steel, and 2205/2507 duplex steel. Structurally, they are divided into two types, concentric and eccentric, and the connection methods support socket welding, threading, and flanging. They are mainly used in high-pressure small-pipe systems to make smooth transitions between different pipe diameters, such as power plant instrument sampling pipes, petrochemical precision process branch pipes, and natural gas high-pressure auxiliary pipelines. If you are selecting models for a high-pressure small-pipe project, you can send us the specific diameter, pound rating, material, and connection method, and we will assist in confirming the configuration and provide a quotation.
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Flanged Reducer
Flanged reducers are used for diameter transition between large pipes and small pipes in piping systems. Both ends have integrally flanged discs and are connected by bolts and sealing gaskets. No hot work welding is required on site, and later disassembly, assembly, and maintenance are also convenient. The products are divided into two structures: concentric and eccentric. The concentric type is mostly used for diameter reduction of vertical risers, while the eccentric type is used for horizontal pipelines, which can avoid the accumulation of gas or liquid in the pipe and reduce the risk of gas blockage and water hammer. The internal conical flow passage transitions smoothly, which helps stabilize the medium flow rate, reduce local pressure drop, and reduce pipe wall erosion. It implements standards such as GB/T17185, GB/T12459, HG/T21635, and ASME B16.5. The diameter range is DN15 to DN1200, and the pressure coverage is PN6 to PN100 and Class150 to Class1500. Materials include 20# carbon steel, Q235B, Q345B, 304/304L/316/316L stainless steel, 16Mn alloy steel, and ductile iron. Special materials such as duplex steel and Hastelloy can also be customized according to project requirements.
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Flanged concentric reducer
Flange concentric reducers are also commonly called flange concentric size heads, and belong to flanged one-piece reducing pipe fittings. The centers of both ends are on the same central axis, the shape is a symmetrical cone, and both ends have their own flange plates. They rely on bolts together with sealing gaskets to complete pipeline connections, without the need for on-site hot work welding, and are convenient for disassembly, assembly, and maintenance. They are mainly used on vertical risers, connecting two sections of pipeline with different nominal diameters, allowing the fluid to transition smoothly at the reducing point, adjusting the medium flow rate, reducing local pressure drop, and solving the problem of mismatched pipe, valve, and equipment diameters on risers. The interior is a smooth conical flow channel, the medium flows smoothly, turbulence is small, and pipe wall erosion loss is low. The product implements standards such as GB/T17185, GB/T12459, HG/T21635, and ASME B16.5, with nominal diameters DN15 to DN1200, and supports arbitrary diameter reducing combinations at both ends. Pressure ratings cover national standards PN6, PN10, PN16, PN25, PN40, PN64, and PN100, and American standards Class150 to Class1500. Materials can be selected from 20# carbon steel, Q235B, Q345B, 304/304L/316/316L stainless steel, 16Mn alloy steel, and ductile iron, and can also be customized according to project requirements 2
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Flanged Eccentric Reducer
Flanged eccentric reducers belong to flanged reducing pipeline fittings, with flanges integrated at both ends, an eccentric conical flow channel inside, and the centers of the pipe openings at both ends not on the same centerline, while the pipe wall on one side remains straight. After installation, the bottom or top of the pipeline is flush, which can effectively avoid air pockets, accumulated liquid, and impurity sedimentation in horizontal pipelines, reducing the risks of pump cavitation, water hammer, and idle running. The products adopt hot-press forming, forging, or integral casting processes, and are connected by bolts and sealing gaskets, requiring no on-site welding and making disassembly, assembly, and maintenance convenient. We can provide materials such as carbon steel, stainless steel, alloy steel, and ductile iron, with pressure ratings covering PN6 to PN100 and Class150 to Class1500, and sealing surfaces available in RF raised face, MFM male-female face, etc. They are suitable for horizontal transportation pipelines in water supply and drainage, HVAC and fire protection, chemical engineering, power plant circulating water, sewage treatment, etc., and are also suitable for overseas engineering and foreign trade procurement.
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Cast Reducing Pipe
Cast reducing pipes belong to heavy-duty wear-resistant industrial reducing pipe fittings. Unlike conventional stamped or push-formed reducing pipes, the product is integrally cast and formed, with no spliced welds, and the wall thickness can be thickened according to working conditions, with a dense structure, resistance to erosion, wear resistance, and resistance to negative pressure deformation. The product is divided into two structures: concentric and eccentric. Concentric is used for vertical pipelines and uniform pressure conveyance, while eccentric is used for horizontal pipelines and can reduce gas accumulation, liquid accumulation, and sediment accumulation. The nominal diameter covers DN20 to DN1200, and supports national standard, American standard, European standard, German standard, Russian standard, and Japanese standard external dimensions. It can also produce non-standard thickened, non-standard drop, and extended sections according to drawings. Materials include gray cast iron, ductile iron, cast steel WCB, precision-cast stainless steel, and duplex steel castings. We serve B2B customers such as overseas dust removal and environmental protection engineering general contractors, mining pipeline construction units, cement plant supporting equipment suppliers, and power plant thermal pipe network contractors, providing selection confirmation, custom production, and cross-border delivery support.
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Carbon Steel Reducer
Carbon steel reducers, also called carbon steel size reducers, are used in piping systems to connect pipe sections of different nominal diameters, achieving pipe diameter enlargement or reduction, while also adjusting medium flow velocity, balancing pipeline pressure, and reducing fluid turbulence impact. The products cover DN15–DN2000 and include two basic structures: concentric reducers and eccentric reducers. They can be produced according to multiple national standards such as the Chinese national standard GB, the American standard ANSI/ASME, the European standard EN, the German standard DIN, the Russian standard GOST, and the Japanese standard JIS, and also support customization of non-standard reducing dimensions, wall thickness, and straight pipe sections. Commonly used materials include 20#, Q235B, 16Mn, and Q345B carbon steel. Applicable media include water, compressed air, natural gas, steam, oil products, etc., and they are widely used in ordinary and medium-to-high pressure industrial pipelines in petroleum, chemical, electric power, heating, gas, municipal water supply and drainage, and other fields. The products have good toughness, excellent welding performance, and moderate cost, and can undergo surface treatments such as sandblasting, rust removal, anti-rust paint, and galvanizing.
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Stainless Steel Reducer
Stainless steel reducers are core pipe fittings in piping systems that achieve pipe diameter transition, mainly formed by cold-push seamless, steel plate roll-welding, and precision casting processes, with chromium-nickel stainless steel as the raw material. Their function is to connect pipes of different nominal diameters, regulate the flow velocity and pressure of the medium in the pipeline, and reduce fluid turbulence impact and pipeline vibration. The products are divided into two basic types: concentric reducers and eccentric reducers: the concentric type is suitable for vertical pipes, vertical equipment interfaces, and main process pipeline diameter reduction, with the medium transported centered and smoothly; the eccentric type is used for horizontal pipeline laying, keeping one side flush, preventing gas accumulation, liquid accumulation, and sediment buildup in horizontal pipelines. The nominal diameter covers DN15~DN2000, and they can be produced according to the national standard GB, American standard ASME B16.9, European standard EN, German standard DIN, Russian standard GOST, and Japanese standard JIS, and also support non-standard customization. Commonly used materials include 304, 304L, 316, 316L, 321, and 2205 duplex stainless steel. They undergo pickling and passivation before leaving the factory, and can be mirror-polished on demand. If you are selecting models for corrosive, clean, or high-temperature working conditions, welcome to contact us to confirm the material, diameter, and structural solution.
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Alloy Steel Reducer
Alloy steel reducers, also known as alloy large-and-small heads, are variable-diameter pipe fittings used in industrial piping systems to connect pipes of different diameters, and are divided into two structures: concentric and eccentric. Concentric reducers are mostly used for vertical pipes and vertical equipment connections, with the medium conveyed in the center; eccentric reducers are used for horizontal pipes, with one side's generatrix flush, helping to reduce gas and liquid accumulation in horizontal pipelines. The product's nominal diameter covers DN15–DN2000, and it is produced in accordance with ASME B16.9, GB/T12459, DIN, EN, GOST, and JIS standards, adapting to SCH40, SCH80, SCH160, and XXS wall thickness grades. Mainstream materials include heat-resistant and high-pressure alloy grades such as 15CrMo, 12Cr1MoV, Cr5Mo, P11, P12, P22, P91, and 16Mn/Q345B. Compared with carbon steel reducers, alloy steel materials have better creep resistance and thermal fatigue resistance under high-temperature and high-pressure environments; compared with stainless steel reducers, they focus more on high-temperature heat resistance and high-pressure load bearing. The products are aimed at pipeline new construction and renovation projects in fields such as thermal power and cogeneration, petrochemical refining, and boiler heating. For specific specifications, materials, and quantity requirements, please contact us to confirm.
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Duplex stainless steel reducer
Duplex steel reducers are used for smooth diameter transition between pipes of different diameters, regulating medium flow velocity, flow rate, and pipeline pressure, reducing turbulent impact of highly corrosive fluids and local sediment accumulation. Products are divided into concentric reducers and eccentric reducers: the concentric type is suitable for vertical pipelines and vertical equipment interfaces, with the medium conveyed in the center; the eccentric type is suitable for horizontal liquid-phase pipelines, with one side's generatrix flush, which can reduce gas and liquid accumulation and chloride ion deposition. Diameters cover DN15~DN1200, mainstream materials are 2205 (S32205/F51) duplex steel and 2507 (S32750/F53) super duplex steel, can be produced according to ASME B16.9, ASTM A815, GB/T12459, EN, DIN, GOST, JIS and other standards, and supports non-standard customization. Forming processes include seamless cold pushing, CNC roll welding, and precision forging, factory delivery undergoes pickling and passivation, and internal and external mirror polishing can be done on demand.
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