Specification Table
|
Parameter |
Detail |
|
Material |
Ductile Iron |
|
Process |
Casting + Anti-corrosion Coating |
|
Size Range |
DN50–DN300 |
|
Type |
Concentric Reducer |
|
Connection Type |
Grooved |
|
Function |
Axial-aligned pipe diameter transition |
|
Standard |
GB 5135.11-2019 |
|
Application |
Vertical pipelines, risers, fire and water systems |
Axial Alignment for Smooth Pipe Size Transition
- Concentric grooved reducers are designed to connect pipes of different diameters while maintaining a common centerline. This ensures axial alignment between the upstream and downstream piping sections.
- Unlike eccentric reducers, concentric reducers are typically used in vertical piping systems where maintaining centerline alignment is essential for stable flow conditions.
- An application example from Vietnam involves a vertical pipeline system where eccentric reducers were previously used, resulting in uneven flow distribution. After switching to concentric grooved reducers, flow conditions became more stable and system performance improved.
- This product is manufactured from ductile iron, produced through precision casting and finished with an anti-corrosion coating for long-term durability.
- Size range: DN50–DN300, compatible with standard grooved steel pipe systems.
Suitable for Vertical and Axial Piping Systems
- Concentric reducers are widely used in vertical pipelines, risers, downcomers, and other systems where centerline alignment must be maintained during diameter transitions.
- By keeping both pipe ends aligned on the same axis, mechanical stress on pipe joints is reduced and flow stability is improved.
- Jianzhi Group manufactures these fittings and holds UL, FM, and CE certifications, ensuring compliance with international fire protection and piping standards.
- Minimum order value is RMB 10,000. Mixed sizes are allowed within a single order. OEM branding and logo marking are available upon request.
Quality Control and Export Service
- Each concentric grooved reducer undergoes 100% inspection before packaging.
- Dimensional accuracy, coating quality, and groove profiles are fully inspected.
- Third-party inspections are welcome, and factory audits can be arranged upon request.
- Jianzhi Group operates under ISO9001 and ISO14001 certified quality management systems.
- Export packaging is applied according to international shipping standards to ensure product protection during transportation.
- Warranty service is provided. If any quality issue is confirmed upon arrival, replacement or refund will be arranged after verification.
- Standard delivery time is 3–7 days for regular specifications, while bulk orders require 7–10 working days.
- Payment terms: 30% deposit, 70% before shipment. EXW, FOB, and DDP terms are available.
- Production updates, photos, and videos can be provided upon request.
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