Japanese standard reducers are indispensable core reducing fittings in Japanese-style industrial piping systems, mainly used for smooth transition connections between pipes of different A-number diameters in JIS standard pipelines, achievin
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The Japanese standard reducers we produce comply with JIS B2311, JIS B2312, and JIS B2316 standards. The nominal diameters cover 15A to 600A, the wall thickness grades range from Sch10 to Sch160, and the pressure ratings cover 10K, 20K, 30K, and 40K. The products are divided into concentric reducers and eccentric reducers: the concentric type is mostly used for vertical riser diameter reduction, while the eccentric type is mostly used for horizontal pipelines, keeping the bottom of the pipe flush to reduce liquid accumulation and gas accumulation. In terms of process, seamless hot-pressed forming and steel plate rolled and welded forming are adopted, and carbon steel and stainless steel materials are selected according to Japanese-specific grades. Dimensional tolerances, wall thickness, mechanical properties, and non-destructive testing are implemented in accordance with JIS specifications, and Japanese material certificates and factory inspection reports can be provided, for use in Japanese-style project bidding, customs clearance, and on-site completion acceptance. Conventional specifications are in stock, and non-standard customization is also accepted.
| Product Name | Japanese Standard Reducer |
| Product Categories | Reducer |
| All technical parameters of this product strictly benchmark against JIS Japanese Industrial Standards, fully adapting to Japanese-style full-working-condition construction requirements. Executive standards | JIS B2311, JIS B2312, JIS B2316; Product types: JIS concentric reducers, JIS eccentric reducers; Manufacturing methods: seamless hot pressing, refined butt welding. Nominal diameter: 15A–600A; Wall thickness grades: Sch10–Sch160 full series; Pressure ratings: 10K, 20K, 30K, 40K Japanese pressure standards. Applicable materials: STPG370/410 carbon steel, SUS304/SUS316L stainless steel. Working temperature: carbon steel -20℃ to 450℃, stainless steel -196℃ to 600℃. Mechanical properties: carbon steel tensile strength above 400MPa, toughness and ductility conform to JIS pipe material standards. Dimensional accuracy |
| Customization | The factory possesses full-dimensional JIS Japanese standard non-standard customization capabilities, able to precisely match the personalized working condition requirements of Japanese precision engineering, old Japanese standard pipeline renovation, and special equipment connection. Supports Japanese standard non-standard size customization, can customize non-conventional A-number diameters, special wall thicknesses, non-standard eccentricity, extended end faces, special taper concentric and eccentric reducers as needed, suitable for Japanese old equipment renovation and precision pipeline matching. Supports Japanese dedicated material customization, can customize STPG370, STPG410, STS370 carbon steel, SUS304, SUS316L, SUS321 high-end stainless steel and other high-cleanliness corrosion-resistant materials. Supports Japanese pressure rating customization, can process 10K to 40K full pressure rating thick-wall products as needed. Also supports Japanese |
| MOQ | The company's Japanese standard reducers adopt flexible and agile minimum order rules, adapting to the diverse needs of Japanese, Korean and Southeast Asian customers for sample procurement, small-batch matching, bulk engineering stockpiling, and long-term distribution stocking. Conventional Japanese standard in-stock specifications, covering 15A–300A mainstream diameters, Sch40 conventional wall thickness, 10K/20K common pressures, STPG370 carbon steel, SUS3 |
| Lead Time | The factory has established an independent dedicated production line and constant-temperature warehouse for Japanese standard pipe fittings, with a complete inventory system, efficiently responding to Japanese standard project order deliveries in Japan, Korea and Southeast Asia. Market-common JIS standard specifications, conventional pressure ratings, and mainstream material reducers have sufficient in-stock reserves; after order confirmation and payment, re-inspection, sorting, and packaging are completed within 24 hours, with rapid shipment within 3 working days, fully satisfying Japanese standard in |
| Packaging | Japanese standard reducers adopt high-precision clean packaging dedicated for Japan-Korea export, strictly matching Japanese product cleanliness standards, suitable for sea freight and air freight cross-border long-distance transportation, preventing collisions, rust, and contamination. Small specifications 15A–100A are all individually wrapped in bubble bags, with dust-proof plastic protective caps added at both ends to prevent dust and impurities from entering the interior of the pipes, separately classified and packed into thickened export cartons, with cartons printed with Japanese and English bilingual specifications, models, materials, and standard information. Medium and large specifications 125A–600A are wrapped entirely with multi-layer waterproof and moisture-proof woven fabric, with reinforced corner protection to avoid transportation deformation and paint surface wear. Large items are uniformly fixed and strapped with fumigated solid wood pallets, conforming to Japan-Korea customs quarantine standards, allowing direct customs clearance and entry. Each batch of products is independently classified, |
| Reference Price | Inquiry |
Conventional JIS standard specifications, commonly used pressure ratings, and mainstream material reducers are kept in stock. After order confirmation and payment, re-inspection, sorting, and packing are completed within 24 hours, and shipment is made within 3 working days. For non-standard customized products, the production cycle must be confirmed according to specific size, material, and quantity. Please contact us and provide drawings or parameters so that production scheduling can be arranged. Packaging is carried out according to Japanese and Korean export requirements: small specifications are packed in export cartons after being placed in bubble bags with dust-proof protective covers; medium and large specifications are wrapped in waterproof and moisture-proof woven fabric; large items are fixed on fumigated solid wood pallets, meeting Japanese and Korean customs quarantine requirements. Each batch of products is accompanied by Japanese bilingual certificates of conformity, material reports, and inspection lists to facilitate customs clearance and on-site acceptance.
Before sales, we provide JIS standard selection, pressure rating matching, and Japanese-style pipeline operating condition consultation, assisting in confirming parameters such as diameter, wall thickness, material, and eccentricity. During sales, we synchronize production, inspection, packing, and logistics information, and provide Japanese and English qualification documents required for customs clearance, warehousing, and completion. After sales, we provide an 18-month warranty period. During the warranty period, non-human-caused quality problems can be returned or exchanged free of charge, and we bear the logistics losses. We are equipped with a multilingual technical team and can provide pipeline welding and installation guidance, clean pipeline commissioning, and troubleshooting support. If you need to confirm specific configurations or request materials, please contact us.
Yes. The products are produced and accepted according to JIS B2311, JIS B2312, and JIS B2316 standards. Dimensions, materials, and processes are implemented according to JIS specifications, and third-party re-inspection is supported.
Stainless steel products are cleaned through pickling and passivation treatment, free of oil stains and free of oxide scale, and can meet the construction requirements of Japanese-style high-cleanliness pipelines. For specific cleanliness grades and media compatibility, please contact us for confirmation.
Regular specifications support single-piece shipment and mixed-batch consolidated orders. Non-standard sizes, special wall thicknesses, non-standard eccentricity, extended end faces, and special materials can all be custom-produced. Please provide drawings or parameters so that we can confirm.
Packaging is carried out according to Japan-Korea export standards, using clean packaging and fumigated solid wood pallets, complying with Japan-Korea customs quarantine requirements. Each batch is accompanied by a Japanese bilingual certificate of conformity, material report, and inspection list.
In-stock orders for commonly used JIS specifications are shipped within 3 working days after order confirmation and payment. For the delivery cycle and minimum order quantity of non-standard customization and bulk orders, please contact us for confirmation based on the specific specifications and quantities.
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