Threaded (Screwed) Reducer
Threaded (screwed) reducers are specialized reducing fittings for small-diameter threaded piping systems. Their core function is to achieve rapid reducing connections between threaded pipes of different diameters, smoothly change the pipeli
Inquiry
- The biggest core advantage of threaded (screwed) reducers is that they require no welding, allow quick installation, can be repeatedly disassembled and reassembled, and involve no open flames during construction
- They are the preferred reducing pipe fittings for threaded pipelines in fire-prohibited areas, civil pipe networks, and equipment supporting pipelines. The product is integrally forged and formed
- with a dense structure, no sand holes, no air pores, and no cracks
- high structural strength, stable pressure resistance, and resistance to damage and deformation
- far exceeding ordinary cast pipe fittings. Precision CNC-turned threads
Detailed Introduction
Threaded (screwed) reducers belong to forged threaded connection pipe fittings. The product body is machined with internal threads, and pipes are directly tightened and assembled through external threads, without welding, making disassembly and assembly convenient and facilitating inspection and replacement of pipeline components. They comply with standards such as GB/T14383, ASME B16.11, MSS SP-97, etc., and commonly use NPT American tapered pipe threads and BSPT British tapered pipe threads. Specifications cover DN6~DN100 (1/8 inch~4 inch), pressure ratings Class150, Class3000, Class6000, Class9000, integrally forged and formed, with a dense material structure and no internal welds. They are divided into two structures: concentric and eccentric: concentric is used for vertical risers, and eccentric is used for horizontal small pipes, solving the problems of gas accumulation and liquid accumulation in pipelines. Materials include carbon steel, stainless steel, alloy steel, etc. They are suitable for instrument pipelines, compressed air, water supply and drainage, gas, fire protection, and chemical auxiliary small pipes, suitable for working conditions requiring frequent disassembly and assembly and where on-site hot work welding is impossible, and are also commonly used fittings in foreign trade pipeline projects.
- No welding, no hot work required, threaded screw-in installation, suitable for construction in fire-prohibited areas and confined spaces
- Repeatable disassembly and assembly, convenient for inspection and replacement of pipeline components, reducing later maintenance costs
- Integrally forged and formed, dense structure, no sand holes, pores, or cracks, high structural strength
- Precision CNC-turned threads, full thread profile, accurate pitch, standard taper, smooth screwing
- Two structures available: concentric and eccentric, respectively suitable for vertical risers and horizontal small pipes
- Conventional NPT and BSPT standard specifications support ordering from 1 piece, with no minimum purchase quantity limit
| Product Name | Threaded Reducer |
| Product Categories | Please contact us to confirm |
| Customization | Our factory has comprehensive customization capabilities for threaded reducers, and can solve the installation problems of standard threaded pipe fittings being unable to adapt to special equipment, imported pipelines, and niche working conditions, achieving full-dimensional personalized customization. We can customize non-standard reduction ratios, special overall lengths, unconventional tapers, and special wall thickness threaded reducers as needed, suitable for old pipe network renovation, special equipment connection, and non-standard process pipelines. We support customization of special thread systems, including special thread pitch, non-standard taper, special British and American non-standard threads, perfectly matching imported equipment and overseas niche engineering standards. We can customize special materials such as carbon steel, stainless steel, alloy steel, duplex steel, etc., suitable for harsh working conditions such as high temperature, high pressure, strong corrosion, and seawater salt spray. Surface treatment can be customized as needed: natural color, sandblasting, anti-rust passivation, hot-dip |
| MOQ | Our factory's threaded (screwed) reducers adopt an ultra-low threshold flexible minimum order mode, fully adapting to sample procurement, sporadic replenishment, equipment supporting, batch engineering, and foreign trade full orders of various procurement needs. Conventional NPT, BSPT standard specifications, and conventional pressure rating in-stock items on the market support ordering from 1 piece, with no minimum purchase quantity limit, suitable for pipeline emergency repair, equipment sample testing, engineering replenishment, small pipeline networks |
| Lead Time | Our factory has professional threaded forged pipe fittings production lines and large-scale in-stock warehousing, with sufficient inventory and stable production capacity for threaded (screwed) reducers, and precise and controllable delivery times, perfectly matching civil engineering schedules, industrial technical transformation progress, and foreign trade export shipping schedules. For conventional standard threaded specifications and general pressure rating in-stock orders, after confirmation without error, ultra-fast shipment within 24 hours, quickly solving customers' urgent order replenishment, |
| Packaging | Threaded (screwed) reducers use precision thread-specific protective packaging, focusing on protecting the thread profile from bumps, scratches, and deformation, adapting to domestic logistics, long-distance transportation, and foreign trade sea export needs. Products are uniformly cleaned before leaving the factory, removing burrs, iron filings, and oil stains, with surfaces sprayed with high-quality anti-rust oil, effectively preventing oxidation and rusting and thread corrosion during storage and transportation. All pipe fitting thread positions are individually fitted with special thread protection sleeves, precisely protecting the thread profile, eliminating bumped and damaged threads, extrusion deformation, and sand and dust entering the inside of the threads, ensuring perfect thread engagement and unaffected sealing upon arrival. Small products are wrapped in individual bubble bags to avoid mutual friction and wear; after orderly classification, they are packed into thickened hard cardboard boxes, with layered isolation and shockproof and pressure-resistant protection. Large-volume and foreign trade full-order goods use solid wood pallets |
| Reference Price | Inquiry |
| Size Range | DN6–DN100 (1/8"–4") |
Applications
- Reducing connections for petrochemical plant instrument pipelines, power plant vent threaded small pipes, and chemical auxiliary process pipelines
- Urban gas household pipeline networks, fire sprinkler threaded systems, HVAC heating small pipes, and water supply and drainage civil threaded pipelines
- Threaded reducing for air compressors, heat exchange equipment, pressure vessel instrument ports, water treatment equipment, and small unit inlet and outlet
- Special construction environments such as explosion-proof workshops, confined spaces, and indoor pipelines where hot work welding is prohibited
- Threaded pipe fitting supporting for foreign trade B2B buyers and cross-border trading companies used in overseas pipeline projects
Overview
Threaded reducer, also known as threaded size head, threaded reducing joint, English Threaded Reducer, belongs to forged threaded connection pipe fittings. The product body is machined with internal threads, and the pipe is directly screwed and assembled through external threads, without welding, convenient for disassembly and assembly, and convenient for maintenance and replacement of pipeline components. Mostly used for small-diameter low-pressure to medium-high pressure pipeline reducing, implementing GB/T14383, ASME B16.11, MSS SP-97 and other domestic and international standards. Commonly used NPT American tapered pipe thread, BSPT British tapered pipe thread, specifications DN6~DN100 (1/8 inch~4 inch), pressure ratings Class150, Class3000, Class6000, Class9000, integrally forged and formed, material dense without internal welds. Divided into concentric and eccentric two structures: concentric used for vertical risers, eccentric used for horizontal small pipes, solving the problem of pipeline gas accumulation and liquid accumulation. Materials include carbon steel, stainless steel, alloy steel, etc.
Key Features
The biggest advantage is no welding, fast installation, repeatable disassembly and assembly, zero construction open flame, suitable for fire-prohibited areas, civil pipe networks and equipment supporting threaded pipelines. The product is integrally forged and formed, with dense structure, no sand holes, pores, cracks, high structural strength, stable pressure resistance, not easy to break or deform. The thread is precision CNC turned, with full tooth profile, accurate pitch, standard taper, smooth screwing, tight engagement, and with sealing gasket or raw material tape can achieve zero leakage sealing effect. The concentric structure has a centered and stable flow channel, small pressure loss, ensuring stable medium transportation; the eccentric structure has a flat top design, used for horizontal pipelines to solve the problem of gas accumulation and liquid accumulation.
Applications
Industrial scenarios cover petrochemical plant instrument pipelines, power plant vent threaded small pipes, chemical auxiliary process pipelines, compressed air pipe networks, gas transmission branch pipes, automation equipment fluid pipelines, suitable for medium-low pressure, clean media, gas transmission working conditions. Municipal and civil scenarios are suitable for urban gas household pipe networks, fire sprinkler threaded systems, HVAC heating small pipes, water supply and drainage civil threaded pipelines, community pipe network renovation projects. Equipment supporting scenarios include air compressors, heat exchange equipment, pressure vessel instrument ports, water treatment equipment, small unit inlet and outlet threaded reducing connection. At the same time, it is suitable for explosion-proof workshops, confined spaces, indoor pipelines and other special construction environments where hot work welding is prohibited. The concentric structure is suitable for vertical pipelines, and the eccentric structure is suitable for horizontal small pipes.
Specifications
Specifications cover DN6~DN100 (1/8 inch~4 inch), pressure ratings Class150, Class3000, Class6000, Class9000. Thread types commonly used NPT American tapered pipe thread and BSPT British tapered pipe thread, for other types please contact us to confirm. Materials include carbon steel, stainless steel, alloy steel, etc., for specific grades please contact us to confirm. Implements GB/T14383, ASME B16.11, MSS SP-97 and other standards. Structure is divided into concentric and eccentric two types. Supports customization of non-standard reducing ratios, special total length, non-standard taper, special wall thickness, special thread types, special materials and surface treatment. If you need to confirm specific parameters, please contact us and provide size, quantity, thread type and pressure rating.
Purchasing & Delivery
Conventional NPT, BSPT standard specifications, conventional pound class in-stock support minimum order of 1 piece, no minimum purchase quantity limit, suitable for pipeline emergency repair, equipment sample testing, engineering material replenishment, small pipe networks and other needs. Conventional standard threaded specifications, general pound class in-stock orders, shipped within 24 hours after confirmation. Products are uniformly cleaned before leaving the factory, removing burrs, iron filings, oil stains, surface sprayed with anti-rust oil, thread positions individually covered with special thread protective sleeves, small pieces individually wrapped in bubble bags, packed into thickened hard cardboard boxes, large quantities or foreign trade full orders packed with solid wood pallets. Can customize Chinese and English foreign trade shipping marks, specification labels, thread types, pound class markings, batch numbers and quality inspection labels as needed. For specific delivery time and packaging requirements please contact us to confirm.
Service & Support
Pre-sales free provision of working condition analysis, thread type selection, pound class matching, concentric eccentric structure recommendation, installation adaptation guidance. During sales, dedicated personnel track the entire order, synchronizing production, processing, quality inspection, and shipping progress, timely responding to order changes, specification adjustments, and urgent shipment needs. All products leave the factory after thread go/no-go gauge inspection, full dimension inspection, and appearance screening. After-sales commitment: products with original quality problems are unconditionally returned or exchanged, for quality problems such as thread defects, dimensional deviations, material mismatch, process defects, etc., we bear all round-trip freight and losses, free replacement, full compensation. Lifetime free technical consultation for threaded pipeline installation, sealing adaptation, and working condition matching. Long-term cooperative customers establish exclusive files, enjoying priority production scheduling, priority shipping, and priority after-sales privileges.
FAQ
What connection method is the threaded reducer?
It adopts NPT/BSPT tapered pipe thread screw connection installation, no welding, no hot work, fast installation, detachable maintenance, suitable for standard threaded small pipe pipeline systems.
How to choose between threaded, socket weld, and butt weld reducers?
For small pipes, low pressure, no open flame allowed, and frequent maintenance needs, choose threaded; for high-pressure precision instrument tubing, choose SW socket weld; for large diameter, high-temperature and high-pressure main pipelines, choose BW butt weld. The three working conditions are complementary, and can be selected according to specific pipeline conditions.
Where are concentric and eccentric structures used respectively?
The concentric structure has a centered flow passage, and is used for vertical risers, small gas transportation pipes, instrument pressure tapping lines, and vent and exhaust pipes; the eccentric structure has a flat top, and is used for horizontal threaded pipelines, which can solve the problems of gas accumulation and liquid accumulation.
What is the minimum order quantity?
Conventional NPT and BSPT standard specifications, conventional pressure ratings in stock support ordering from 1 piece, with no minimum purchase quantity limit, suitable for pipeline emergency repairs, equipment sample testing, engineering replenishment, and other needs.
Can non-standard threads or special materials be customized?
Yes. We support customization of non-standard reducing ratios, special overall lengths, non-conventional tapers, special wall thicknesses, special thread systems, special materials, and surface treatments. Please provide drawings, samples, or technical agreements, and we will assist with confirmation.
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