Eccentric Reducing Cross
The eccentric reducing cross is specifically designed for four-way diversion + diameter reduction + prevention of liquid accumulation and gas pocketing in horizontal process pipelines, and is a multifunctional integrated pipeline fitting. Unlike ordinary concentric crosses, it adopts an eccentric offset structure, which can keep the top or bottom of the pipe flat, completely eliminating the formation of liquid pockets, gas pockets, and medium sedimentation dead corners at horizontal reducing positions. It can simultaneously achieve four-way medium diversion, merging, and pipe diameter transition without the need for additional reducing fittings, greatly simplifying the pipeline structure and reducing weld leakage points. It is mainly used in horizontal pipeline networks for oil products, chemical fluids, steam, sewage, and corrosive media, effectively solving engineering problems such as cavitation, liquid accumulation and retention, and poor drainage, ensuring smooth medium transportation and stable pressure. It is an indispensable specialized pipe fitting for precision process pipeline systems.
Inquiry
- The core advantages of the eccentric reducing cross are its eccentric straight structure, zero conveying dead angles, integrated diversion and reducing, and thorough prevention of gas and liquid accumulation
- It is the optimal diversion solution for horizontal process pipelines. One-piece molding without spliced welds
- The pipe wall is uniform and dense, with excellent resistance to pressure, temperature, and vibration deformation
- Safe and stable operation under high pressure. The eccentric streamline transition is natural
- Minimal fluid resistance
Detailed Introduction
The eccentric reducing cross is a custom-made reducing cross under the Guojie brand. Its reducing port adopts an eccentric non-concentric transition, keeping one side of the pipe wall flush (top-flat or bottom-flat), and is specifically designed for horizontal process pipelines. Compared with ordinary concentric crosses, the eccentric structure can avoid the formation of air pockets and liquid pockets at the reducing position of horizontal pipelines, effectively solving the hidden dangers of gas accumulation, liquid accumulation, medium sedimentation and retention, and cavitation. The product complies with ASME B16.9, GB/T12459, GB/T13401, and SH/T3408 standards, with a nominal diameter range of DN15-DN1200, and wall thickness grades SCH10-SCH160 and XXS extra-thick. This product can simultaneously achieve four-way medium diversion, confluence, and pipe diameter transition, without the need for additional reducing pipe fittings, simplifying the pipeline structure and reducing weld leakage points. It is widely used in horizontal pipeline networks for oil products, chemical fluids, steam, sewage, etc., and is especially suitable for working conditions requiring continuous venting (top-flat) or thorough condensate drainage (bottom-flat). It supports non-standard customization to meet different engineering needs.
- Eccentric flat-straight structure, top-flat (FTO) or bottom-flat (FBO) design, effectively preventing gas and liquid accumulation, and eliminating medium sedimentation dead corners.
- The cross and reducer are integrally formed, without the need for additional reducing pipe fittings, reducing welds and leakage points, and saving installation space.
- Complies with ASME B16.9, GB/T12459, GB/T13401, and SH/T3408 standards, nominal diameter DN15-DN1200, wall thickness SCH10-XXS.
- Supports any non-standard eccentric reducing ratio, and the eccentricity, material, and surface treatment can be customized as needed.
- Adopts hot-press forming, hydraulic bulging, or integral forging processes, with uniform and dense pipe walls, and reliable pressure and temperature resistance.
- Flexible minimum order quantity, with MOQ as low as 1 piece for conventional specifications, supporting mixed batches and combined orders to meet sample and engineering replacement needs.
| Product Name | Eccentric Reducing Cross |
| Product Category | Contact Us to Confirm |
| Standard | ASME B16.9, GB/T12459, GB/T13401, SH/T3408; nominal diameter: DN15-DN1200, supporting any multi-directional eccentric reducing combination; wall thickness grades: SCH10-SCH160, XXS ultra-high-pressure extra-thick; structure type: top-flat FTO, bottom-flat FBO eccentric structure; connection methods: butt welding BW, socket welding SW, threaded TH; forming processes: hot-press forming, hydraulic bulging, integral forging, 100% non-destructive testing; working temperature: carbon steel -20℃~425℃, stainless steel -196℃~600℃; suitable media: oil products, steam, gas-liquid mixed media, acid-base corrosive fluids, sewage slurry. All eccentricity, curvature, wall thickness spec |
| Customization | This factory possesses full-dimensional high-end non-standard customization capabilities for eccentric reducing cross fittings, and can customize any eccentricity, multi-directional unequal-diameter ratios, ultra-large diameters, and ultra-high-pressure thickened structures. It can customize top-flat and bottom-flat dedicated eccentric structures according to requirements, adapting to different exhaust and drainage process needs. It supports customization of precision polishing of the inner cavity, low-flow-resistance streamlined optimization, and thickened and reinforced explosion-proof structures, adapting to high-risk precision working conditions. It can perform surface treatments such as sandblasting, blackening, hot-dip galvanizing, and acid- and alkali-resistant anti-corrosion coatings. It can reversely customize dedicated pipe fittings according to overseas project drawings, dimensions of old equipment, and special process parameters. It supports laser marking, batch coding, and LOGO OEM customization, and can produce high-end materials such as duplex steel, low-temperature steel, and nickel-based alloys, adapting to various demanding industrial scenarios. |
| MOQ | Our factory's eccentric reducing cross adopts a flexible foreign trade minimum order quantity model. The MOQ for conventional popular eccentric reducing specifications is as low as 1 piece, which can meet the needs of engineering trial samples, pipe network renovation replacement parts, equipment repair and replacement, and small trial orders. Commonly used carbon steel and stainless steel top-flat and bottom-flat conventional ratio specifications on the market support scattered purchases and mixed-batch group orders of multiple specifications, with no mandatory minimum order threshold. There is no upper limit for large-volume full-container procurement. |
| Lead Time | Conventional GB and American standard universal eccentric reducing cross fittings are regularly kept in stock. Popular specifications with conventional top-flat and bottom-flat designs can be shipped extremely fast within 24 hours, quickly responding to urgent engineering orders, pipeline network emergency repairs, and modification supplementary order needs. Standard batch conventional eccentric ratio orders have a production lead time of 3-7 working days, with stable production capacity and controllable quality. Orders for special eccentricity, non-standard reducing ratios, and thickened reinforced types have a lead time of 7- |
| Packaging | Our factory's eccentric reducing cross adopts high-end standardized protective packaging for foreign trade, with specialized protection for the irregular eccentric structure, strictly preventing pipe end deformation, paint surface wear, and foreign matter entering the inner cavity. All ports are fitted with sealed dust-proof plugs to eliminate debris remaining inside the pipe; the surface is sprayed with anti-rust oil for anti-corrosion treatment, and each piece is individually wrapped and isolated with thickened bubble film to avoid collision and friction scratches during transportation. Conventional specifications are packed in reinforced export cartons, while large-diameter and bulk goods are packed on fumigated solid wood pallets, reinforced overall with steel straps, suitable for long-distance ocean shipping. The outer packaging clearly marks the eccentric type, reducing specification, wall thickness, material, standard, batch number, and export shipping marks. Supports neutral packaging, LOGO OEM branding, and customized exclusive shipping marks, fully complying with export commodity inspection, customs clearance, and overseas warehousing standards. |
| Reference Price | Quote |
Applications
- Petroleum refining horizontal process pipelines: used for the transportation of refined oil products and intermediate materials, requiring the prevention of liquid accumulation and deposition to ensure smooth pipeline operation.
- Chemical acid-base fluid horizontal pipeline: conveying corrosive media, requiring zero dead angles to avoid intensified corrosion caused by medium retention.
- Natural gas gathering pipeline: gas-liquid mixed medium, adopts a top-flat structure for continuous venting to prevent cavitation.
- Wastewater treatment environmental protection equipment pipeline: for wastewater containing solid particles, an even-bottom structure is adopted to facilitate slag discharge and sewage discharge.
- Power plant auxiliary horizontal systems: steam or condensate pipelines, where water accumulation and air lock must be avoided to ensure thermal efficiency.
Overview
The eccentric reducing cross is a custom pipe fitting designed specifically for horizontal process pipelines. It combines the flow-splitting function of a cross with the reducing function of a reducer, and through its eccentric structure (flat-top or flat-bottom) ensures that one side of the pipeline remains straight. This design effectively avoids the air accumulation and liquid accumulation problems that ordinary concentric crosses easily form when installed horizontally, making it particularly suitable for working conditions requiring venting or draining. The product implements domestic and international standards such as ASME B16.9 and GB/T12459, with a wide range of nominal diameters and selectable wall thickness grades, capable of meeting different pressure and temperature requirements.
Key Features
The core advantage of the eccentric reducing cross lies in its eccentric straight structure, which can thoroughly solve the problem of air and liquid accumulation in horizontal pipelines. The flat-top structure is suitable for gas-phase or gas-liquid mixed media, facilitating continuous venting; the flat-bottom structure is suitable for liquid-phase or viscous media, facilitating condensate drainage and slag discharge. At the same time, this product combines a cross and a reducer into one, reducing the number of pipe fittings and welds and lowering the risk of leakage. The product adopts an integrated molding process, with uniform pipe walls and reliable pressure and temperature resistance, supports non-standard customization, and can adapt to various complex working conditions.
Applications
The eccentric reducing cross is mainly used in horizontally laid process pipelines, especially in occasions where media are prone to deposition and venting and draining are required. Typical industries include petroleum refining, chemical engineering, natural gas, coal chemical industry, water treatment, and others. For example, in horizontal pipe sections of petroleum refining units, the use of a flat-bottom structure can prevent deposition of heavy components; in steam pipelines, the use of a flat-top structure can avoid air lock. In addition, this product is also suitable for power plant auxiliary systems, pharmaceutical clean pipelines, and other fields with high requirements for cleanliness and safety.
Specifications
The product implements ASME B16.9, GB/T12459, GB/T13401, and SH/T3408 standards. The nominal diameter range is DN15 to DN1200, and wall thickness grades include SCH10 to SCH160 as well as XXS extra-heavy. Structural types are divided into two eccentric forms: flat-top (FTO) and flat-bottom (FBO). Connection methods can be selected as butt welding (BW), socket welding (SW), or threaded (TH). Molding processes include hot-pressing, hydraulic bulging, and integral forging. Specific parameters such as material, eccentricity, and reducing ratio can be customized according to project requirements. You are welcome to contact us to confirm detailed specifications.
Purchasing & Delivery
This product adopts a flexible foreign trade minimum order model. The MOQ for regular popular specifications is as low as 1 piece, supporting small-order samples and mixed-batch combined orders. Regular specifications are in stock, and popular sizes can be shipped within 24 hours; the production lead time for standard batch orders is about 3-7 working days; the lead time for special non-standard orders is about 7 days or more, depending on the degree of complexity. Packaging adopts foreign trade standard protection to ensure transportation safety. We provide customized services such as neutral packaging and LOGO labeling, and support export commodity inspection and customs clearance.
Service & Support
We provide comprehensive after-sales service for all eccentric reducing crosses. Before leaving the factory, the products undergo triple quality inspection consisting of dimensional fine-tuning, eccentricity verification, and non-destructive testing to ensure reliable quality. If quality problems occur, we support free replacement or return and exchange. In addition, we provide free process selection guidance, installation plan suggestions, and technical Q&A, and can provide documents such as material certificates according to customer needs. Long-term cooperative customers can also enjoy convenient services such as inventory custody and partial shipments.
FAQ
What is the main use of the eccentric reducing cross?
The eccentric reducing cross is specially designed for horizontal process pipelines, used to achieve four-way diversion and size reduction, while through the top-flat or bottom-flat eccentric structure, it prevents gas accumulation, liquid accumulation, and medium sedimentation inside the pipeline, ensuring smooth medium transportation.
What is the difference between an eccentric reducing cross and an ordinary reducing cross?
An ordinary reducing cross uses a concentric transition, and when installed horizontally, it is prone to forming gas pockets or liquid pockets at the size reduction point. An eccentric reducing cross uses an eccentric structure, keeping the top or bottom of the pipe flat, thereby avoiding gas accumulation and liquid accumulation, making it more suitable for horizontal pipelines.
How to choose between top-flat and bottom-flat structures?
If the medium is gas phase or gas-liquid mixture, it is recommended to choose the top-flat structure for easy exhaust; if the medium is liquid phase or viscous medium, it is recommended to choose the bottom-flat structure for easy condensate drainage and slag discharge. The specific choice can be made according to your process requirements.
Do you support non-standard customization?
Yes. We can customize any eccentricity, size reduction ratio, material, and wall thickness according to your drawings or requirements, to meet special working condition needs. Please contact us to provide detailed parameters.
What certifications does the product have?
We can provide documents such as material certificates. Please contact us to confirm the specific certification requirements, and we will provide corresponding support according to your needs.
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