Name: China Grooved Reducing Coupling Manufacturers Suppliers Factory - Wholesale Service - Gangyuanlong
Brand: Juncheng
SKU: 306044753

Specification Table

Parameter	Detail
Material Grade	Ductile Iron
Process	Casting + Anti-corrosion Coating
Size Range	DN50–DN300 (multiple reducing combinations)
Wall Thickness	Compatible with standard pipe schedules
Shape	Sleeve
Connection	Grooved
Standard	GB 5135.11-2019
Application	Direct connection between different pipe sizes

Direct Connection for Different Pipe Sizes

The grooved reducing coupling is designed to connect two pipelines of different diameters directly without requiring additional reducers, elbows, or tees.
The fitting features a sleeve-type structure with different connection sizes on each end, allowing a smooth transition between larger and smaller pipelines.
A customer in Vietnam needed to connect a DN200 pipeline to a DN150 pipeline. His original plan required a reducer and two separate couplings, which increased both installation complexity and material usage. After switching to our grooved reducing coupling, the connection was completed using a single fitting.
The grooved reducing coupling is manufactured from ductile iron through casting with an anti-corrosion coating. Sizes range from DN50 to DN300 with multiple reducing combinations available.

Compared with traditional installation methods that require separate reducers and couplings, the grooved reducing coupling integrates these functions into a single component.
This helps reduce installation cost, potential leak points, and installation time.
Jianzhi Group manufactures these couplings and is the chairman unit of China's casting association. The company holds UL, FM, and CE certifications, ensuring reliable product quality and international market compatibility.
The minimum order value is 10,000 RMB, and mixed sizes are acceptable within a single order. OEM branding services are also available.

Each grooved reducing coupling undergoes full inspection before packaging.
Third-party inspection is welcome, and factory visits can also be arranged.
Warranty support is provided. If any issue occurs upon arrival at your port, please provide photos for verification. Replacement or refund will be arranged accordingly.
Payment terms: 30% deposit, 70% balance before shipment. Available terms include EXW, FOB, and DDP.