Stainless steel reducers are core pipe fittings in piping systems that achieve pipe diameter transition. They are mainly formed by cold-push seamless, steel plate rolled and welded, 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. Products are divided into two basic types: concentric reducers and eccentric reducers: the concentric type is suitable for vertical pipelines, 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 diameter range covers DN15~DN2000, and they can be produced according to 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 as needed. 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.
- The diameter range covers DN15~DN2000, and they can be produced according to standards such as GB, ASME B16.9, EN, DIN, GOST, and JIS, and also support non-standard customization, making it convenient to connect with the piping systems of different countries and projects.
- Commonly used materials include 304, 304L, 316, 316L, 321, and 2205 duplex stainless steel, which can be matched according to the degree of medium corrosion and temperature conditions, among which 316L and 2205 are more suitable for seawater, salt water, and strongly corrosive working conditions.
- Two structures are available: concentric and eccentric: the concentric type is used for vertical pipelines and vertical equipment interfaces, and the eccentric type is used for horizontal liquid-phase pipelines, avoiding gas accumulation, liquid accumulation, and corrosion dead corners.
- They are formed by cold-push seamless, steel plate rolled and welded, and precision casting processes, undergo pickling and passivation before leaving the factory, and can be mirror polished as needed, reducing surface oxide scale and rust impurities.
- DN15~DN600 conventional 304, 316L standard wall thickness seamless reducers are usually kept in stock, and standard orders are completed within 3 working days, suitable for projects with tight schedules.
- For conventional 304/316L materials, SCH standard wall thickness, and mainstream concentric and eccentric specifications, the minimum order quantity is 10 pieces, and foreign trade sample orders and project supplementary orders can be accepted.
- Provide 18-month cross-border warranty. During the warranty period, for material corrosion, process defects, leakage and deformation, and failure to meet cleanliness standards caused by non-human installation issues, we will remake and reship for free and bear the cross-border logistics costs.
| Product Name | Stainless Steel Reducer |
| Categories | Reducers |
| Customization | The factory possesses full-dimensional high-end stainless steel reducer precision customization capabilities, is proficient in international anti-corrosion, cleanliness, high-temperature, and seawater special working condition standards, and undertakes various high-precision non-standard customization orders. For size customization, it can produce reducers with any non-standard diameter reduction drop, extended straight pipe sections, non-standard total length, and special eccentricity, adapting to overseas old non-standard anti-corrosion pipeline networks and special interface modifications of imported high-end equipment. For wall thickness, it can customize SCH ultra-thin, ultra-thick high-pressure, and locally reinforced structures, adapting to differentiated working conditions of low-pressure cleanliness and high-pressure anti-corrosion. For materials, it can customize 304L low-carbon intergranular corrosion-resistant, 316L seawater-resistant, 321 high-temperature-resistant, and 2205 duplex steel high-strength anti-corrosion special materials. For processes, it supports internal and external mirror polishing, sanitary-grade fine cleaning, weld-free finishing, and special acid pickling and passivation treatment. |
| MOQ | Stainless steel reducers adopt a flexible tiered MOQ mechanism, adapting to diverse procurement scenarios such as foreign trade sample orders, high-end project supplementary orders, overseas warehouse stocking, and large-volume EPC high-end centralized procurement. For DN15–DN600 conventional 304/316L materials, SCH standard wall thickness, and concentric/eccentric mainstream in-stock specifications, the minimum order quantity is 10 pieces, supporting foreign trade small-order trial sales and high-end engineering. |
| Lead Time | Relying on a high-end stainless steel dedicated production line, a complete set of acid pickling and passivation equipment, and a full-specification in-stock warehousing system, stainless steel reducers provide high-end precision stable delivery services, adapting to the stringent construction schedule milestones of global high-end anti-corrosion and clean engineering. For DN15–DN600 conventional 304 and 316L standard wall thickness seamless reducers, massive stock is kept on hand, and standard orders are completed within 3 working days. |
| Packaging | Stainless steel reducers adopt high-end foreign trade clean anti-corrosion dedicated packaging, eliminating scratches, stains, oxidation, and collision damage, strictly adapting to high-end pipe fitting export standards and overseas clean project warehousing requirements. For small DN15–DN100 precision stainless steel reducers, plastic dust-proof protective rings and threaded protective caps are installed at the pipe ends, each piece is wrapped with anti-rust paper and waterproof PE film, and independently packed to avoid friction scratches and eliminate oxidation blackening during transportation. For medium DN125–DN600 specifications, they are neatly stacked on fumigation-free solid wood pallets, integrally wrapped with waterproof and dust-proof film, locked and secured with steel straps, and the pallets are equipped with anti-slip isolation layers to ensure the pipe fitting surfaces are smooth and free of scratches. For large DN600 and above large-diameter stainless steel reducers, they are individually sealed and packaged in wooden boxes, with internal soft foam positioning protection. |
| Reference Price | Inquiry |
| Product Type | Concentric reducers, eccentric reducers |
Applications
- Fine chemical, petrochemical refining, acid-base transportation pipeline networks, and corrosive gas process pipelines are in long-term contact with weak acids, weak bases, and chemical media, requiring pipe fittings to be corrosion-resistant and not produce secondary pollution.
- Pharmaceutical sterile pipelines, food processing, pure water purification, and clean pipelines supporting medical devices require no rust and no precipitation, and mirror polishing and sanitary-grade fine cleaning can be performed on demand.
- Seawater desalination, offshore platforms, coastal salt spray pipeline networks, and ship transportation pipelines need to resist chloride ion corrosion, and 316L and 2205 duplex steel are common selection directions.
- Lithium battery, photovoltaic, hydrogen energy and other new energy industrial anti-corrosion process piping systems have clear requirements for cleanliness and corrosion resistance.
- For industrial piping networks operating with high-temperature steam, high-temperature process gases and continuous high-temperature operation, high-temperature resistant materials such as 321 can be confirmed according to working conditions.
- Pipeline new construction and renovation for overseas chemical EPC general contracting, seawater desalination projects, new energy pipeline contracting, pharmaceutical and food clean engineering, and offshore oil platform infrastructure projects.
- Anti-corrosion equipment import and export reducing batch matching for fluid equipment manufacturers, pharmaceutical equipment suppliers, water purification equipment enterprises and chemical complete equipment manufacturers.
Purchasing & Delivery
Stainless steel reducers are scheduled for production according to orders. DN15~DN600 conventional 304, 316L standard wall thickness seamless reducers are kept in stock, and standard orders are completed within 3 working days. For DN15~DN600 conventional 304/316L materials, SCH standard wall thickness, concentric and eccentric mainstream specifications, the minimum order quantity is 10 pieces, and foreign trade sample orders and project supplementary orders can be accepted. The non-standard customization proofing cycle is 3~5 days. Packaging is graded by caliber: small DN15~DN100 pipe ends are fitted with plastic dust-proof protective rings and threaded protective caps, and each piece is wrapped with anti-rust paper and waterproof PE film; medium DN125~DN600 are stacked on fumigation-free solid wood pallets, wrapped with waterproof and dust-proof film, and secured with steel straps; large sizes above DN600 are individually sealed in wooden boxes, with soft foam positioned inside for protection. All products are affixed with bilingual Chinese-English labels indicating material, standard, wall thickness, heat number, batch, and pickling status. If you need to confirm the inventory, delivery time and quotation for specific specifications, please provide caliber, material, wall thickness standard, concentric or eccentric structure and quantity, and welcome to contact us.
Service & Support
Before sales, anti-corrosion engineers match materials and structures according to the acidity and alkalinity of the medium, seawater chloride ions, temperature and pressure, and cleanliness level, and assist in distinguishing concentric and eccentric installation specifications. During sales, welding, flaw detection, pickling, polishing, and quality inspection data are synchronized, supporting remote factory audits, online piece-by-piece inspection, and third-party supervision, with the entire order traceable. After sales, an 18-month cross-border warranty is provided. During the warranty period, material corrosion, process defects, leakage deformation, and failure to meet cleanliness standards caused by non-human installation problems will be redone and reshipped free of charge, and cross-border logistics costs will be borne by us. At the same time, anti-corrosion pipeline technical support is provided, with 24-hour bilingual Chinese-English answers to questions on installation, welding, anti-corrosion maintenance, and overseas acceptance specifications. We can reproduce 1:1 according to overseas drawings or old parts, customize special grooves, non-standard end faces, and special-shaped connection structures, and support internal and external mirror polishing, sanitary-grade fine cleaning, weld-free finishing, and special pickling and passivation treatment. If you need to confirm the selection or customization plan, please contact us.
FAQ
How to choose between 304 and 316L stainless steel reducers?
For ordinary clean water, air, and normal-temperature slight corrosion working conditions, 304 can be selected. For seawater, brine, strong acids and alkalis, high-temperature corrosion and chemical process pipelines, 316L is recommended, which has stronger chloride ion resistance and corrosion resistance and helps avoid pitting corrosion and intergranular corrosion. If the medium composition is complex or the temperature and pressure are high, welcome to contact us to confirm the specific material.
What is the difference in installation between concentric reducers and eccentric reducers?
Vertical pipes, vertical equipment connections, and main process pipe reducers use concentric reducers, allowing the medium to be transported smoothly in the center without bias flow disturbance. Horizontal liquid-phase pipes use eccentric reducers, keeping one side flat to prevent gas accumulation, liquid accumulation, cavitation, and corrosion dead corners. When selecting models, please provide the pipe routing and medium status, and we can assist in confirming.
Do you support sanitary-grade mirror polishing customization?
We support internal and external fine polishing, aseptic acid pickling, and high-cleanliness treatment, which can meet the surface condition requirements of clean engineering such as food, pharmaceuticals, and pure water. For specific polishing grades and acceptance standards, please provide project requirements, and you are welcome to contact us for confirmation.
Can you provide English quality inspection documents?
We can provide English documents such as 3.1B certificates, spectra, corrosion tests, flaw detection, and cleanliness reports free of charge. Please inform us before placing an order which reports are specifically needed, so that we can prepare them along with the shipment.
Can non-standard sizes and special materials be customized?
Yes. In terms of size, we can produce non-standard reducer drop, extended straight pipe sections, non-standard total length, and special eccentricity reducers; wall thickness can be customized with SCH ultra-thin, ultra-thick high-pressure, and locally reinforced structures; materials can be customized with 304L, 316L, 321, 2205 duplex steel, etc. We can replicate 1:1 according to overseas drawings or old parts, with a sampling cycle of 3~5 days. Please provide drawings or old part dimensions, and you are welcome to contact us for confirmation.
What are the lead time and minimum order quantity for standard specifications?
DN15~DN600 standard 304, 316L standard wall thickness seamless reducers are kept in stock, and standard orders are completed within 3 working days. DN15~DN600 standard 304/316L material, SCH standard wall thickness, concentric and eccentric mainstream specifications have a minimum order quantity of 10 pieces. For lead time and minimum order quantity of other specifications and materials, please contact us to confirm.
