News
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Methods for Improving Feed Pellet Durability Index (PDI)
The Pellet Durability Index (PDI) is the feed industry’s standard metric for pellet physical quality. Measured by tumbling a sample of pellets in a standardized tester (Holmen pneumatic or Kansas State tumbling can method) and calculating the percentage of pellets that remain intact,...Read more -
Ring Die Service Life Extension and Maintenance Guide
A ring die represents one of the most significant consumable costs in feed mill operations. Industry data indicates that a standard-quality ring die typically processes approximately 3,000 tons of material before reaching end of life, while premium-quality dies can process 7,000 tons or more [1]...Read more -
Ring Die Materials and Manufacturing Processes
The ring die is the heart of a pellet mill. Its material composition and manufacturing quality directly determine pellet quality, production capacity, energy consumption, and the all-important metric of cost per ton. When a ring die wears prematurely, blocks frequently, or produces unstable pelle...Read more -
How a Tunisian Broiler Integrator Achieved Consistent Pellet Quality and Lower Feed Costs with Hongyang Ring Die Pellet Mill
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Slovak Swine Feed Mill Achieves Consistent Pellet Quality with Hongyang Ring Die Pellet Mill
Item Detail Client Type Mid-sized integrated swine operation (2,800 sows, farrow-to-finish) Feed Type Grower-finisher pig feed (corn-wheat-barley-soybean meal base) Equipment Hongyang SZLH420 Ring Die Pellet Mill (110 kW) Installation Q3 2025 Key Results PDI 95.2%, throughput 10.5 ...Read more -
Moldova Dairy Feed Mill Achieves Stable 7.2 TPH Output with Hongyang Ring Die Pellet Mill | Customer Case
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Optimizing Corn-Based Layer Feed Pellet Quality: A Hongyang Ring Die Pellet Mill Case Study from Colombia
Executive Summary Colombia’s poultry sector produced a record 19.5 billion eggs in 2025, with per capita consumption reaching an all-time high of 366 eggs per year, according to the National Federation of Poultry Producers (FENAVI). The country’s animal feed industry surpassed 13.2 mi...Read more -
Hongyang HYPM508 Ring Die Pellet Mill and Counterflow Cooler Stabilize Dairy Feed Production at a Nakuru, Kenya Feed Mill
Parameter Detail Country Kenya Region Nakuru County, Rift Valley Customer Type Medium-scale commercial dairy feed manufacturer Feed Type Dairy concentrate pellets (14–18% crude protein, 6 mm diameter) Hongyang Equipment HYPM508 Ring Die Pellet Mill × 1 unit; HYSK160 Counterflow Cooler × 1 unit Ra...Read more -
Arctic Char Feed Pellet Durability: Hongyang Ring Die Pellet Mill Case Study in Iceland
Executive Summary Iceland’s aquaculture sector produced 64,417 tonnes of farmed fish in 2025, representing a 17% year-over-year increase according to Statistics Iceland. Arctic char (Salvelinus alpinus) accounted for 5,141 tonnes, cementing Iceland’s position as the world’s larg...Read more -
Norway Salmon Feed Producer Achieves 93% Pellet Durability with Hongyang Ring Die Pellet Mill Technology
Executive Summary Norway is the world’s largest producer of farmed Atlantic salmon, harvesting 1.553 million tonnes in 2024 and consuming an estimated 1.8 to 2.0 million tonnes of formulated feed annually. The physical quality of salmon feed pellets — particularly water stability, durabilit...Read more -
Cambodia Pangasius Floating Feed Production with Hongyang Ring Die Pellet Mill | Case Study
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Estonian Swine Producer Achieves 8% Feed Efficiency Gain with Hongyang Ring Die Pellet Mill
 Executive Summary Country: Estonia Client Type: Mid-size integrated swine operation (2,800 sows, farrow-to-finish) Feed Type: Finisher pig complete feed (corn-barley-wheat-SBM based) Equipment: Hongyang HYPM-508 ring die pellet mill with double-layer conditioner Annual Feed Output: 28,000 ton...Read more
