Over 10,000+ customers' choice, Focus on screening industry 40+ years
Feed raw materials come in many varieties, and different materials have different requirements for equipment materials. Ordinary carbon steel equipment, after prolonged contact with feed materials, may face the following issues:
Corrosion risks. Animal‑derived feed ingredients such as fish meal and meat and bone meal contain certain amounts of oils and salts – which are corrosive to metals in humid environments. Ordinary carbon steel equipment is prone to rusting after prolonged contact with such materials – rust particles contaminating the feed directly affect product quality and food safety.
Hygiene standards. Feed is a food‑grade product with strict hygiene requirements for production equipment. Equipment materials must meet national food‑grade certification standards – i.e., SUS304 stainless steel. Stainless steel has smooth surfaces, no dead corners, and is easy to clean – effectively preventing material residue and bacterial growth.
The challenge of wet and high‑moisture materials. Fermented feed, wet feed, and other high‑moisture materials can cause ordinary carbon steel equipment to rust due to moisture erosion. Stainless steel offers excellent corrosion resistance – capable of handling the special conditions of wet feed screening.
Long service life and low maintenance costs. Stainless steel construction is robust, corrosion‑resistant, and durable – resulting in long equipment service life and low maintenance costs. For feed production lines requiring 24‑hour continuous operation, equipment durability directly affects overall line utilisation.
Gaofu's SZF series stainless steel feed linear vibrating screen uses dual vibrating motors operating in synchronised opposite directions. When the two motors mounted longitudinally on the screen body run in opposite directions, the lateral excitation forces cancel each other out, while the longitudinal forces are transmitted through the vibration‑transmitting body to the entire screen box, generating stable linear vibration on the screen surface. Under the combined action of excitation force and gravity, material is thrown up on the screen surface and moves forward in a straight line in a bouncing motion. Particles smaller than the screen openings pass through to the lower layer, while oversize material travels along the screen surface to the outlet, completing the grading operation.
The linear vibrating screen can simultaneously obtain several different particle size fractions, completing multi‑stage grading in a single pass. It is particularly effective for screening and grading powdered and granular materials.
Core Advantages of Stainless Steel Construction
1. Corrosion resistance – suitable for wet and high‑oil materials
The SZF series stainless steel feed linear vibrating screen is constructed of 304 stainless steel – offering excellent corrosion resistance against high‑oil materials such as fish meal and meat and bone meal, as well as high‑moisture materials such as fermented feed and wet feed. The equipment does not rust from prolonged contact with corrosive materials – preventing rust particles from contaminating the feed and ensuring feed purity and safety.
2. Food‑grade hygiene standards – compliant with industry regulations
Stainless steel meets national food‑grade certification standards. The equipment has smooth surfaces and a dead‑corner‑free design – easy to clean thoroughly. The fully enclosed structure effectively prevents dust emission – ensuring hygienic and safe feed processing.
3. Robust structure – excellent durability
The entire machine is constructed of high‑quality stainless steel – robust, corrosion‑resistant, and durable. High structural rigidity and impact resistance prevent deformation and cracking. For feed production lines requiring long‑duration continuous operation, equipment durability directly affects overall line stability and reliability.
4. Easy cleaning – convenient maintenance
The smooth stainless steel surfaces resist material adhesion and are easy to clean. The modular structural design allows quick disassembly and replacement. Routine maintenance requires no complex operations – reducing maintenance costs and downtime.
The versatility of Gaofu's SZF series stainless steel feed linear vibrating screen is reflected in its wide adaptability to different material forms:
Grading screening of pellet feeds. Whether for livestock and poultry feed, aquatic feed, or pet food pellets, the SZF series linear vibrating screen achieves precise grading. The equipment supports flexible configurations of 1 to 5 screen decks , enabling a single machine to produce 2 to 6 different particle size fractions simultaneously. Screened particles are uniform in size, effectively eliminating size mixing and cross‑contamination.
Screening of wet and high‑moisture materials. For fermented feed, wet feed, and other high‑moisture materials, 304 stainless steel offers excellent corrosion resistance – effectively handling the special conditions of wet screening. The equipment runs smoothly with optimised vibration parameters – suitable for wet screening operations.
Fine screening of powdered feeds and premixes. For vitamins, trace minerals, and other premixes, as well as powdered feed ingredients, the SZF series linear vibrating screen achieves grading fineness of 0.075‑150 mm with 85%‑98% classification efficiency. High screening accuracy ensures uniform particle size after processing.
Raw material impurity removal and finished product grading. The equipment achieves precise processing for feed raw material impurity removal, finished feed grading, and industrial material purification. It effectively removes impurities such as straw and stones from corn, soybean meal, and other raw materials – and precisely controls pellet particle size range, removing excess powder and off‑spec broken particles.
Gaofu's SZF series stainless steel feed linear vibrating screen is widely applicable to the following feed materials and production scenarios:
Livestock and poultry feed: Raw material cleaning and finished product grading for pig, poultry, duck, and other feeds;
Aquatic feed: Grading screening of fish, shrimp, and other pellet feeds;
Pet food: Grading of dry kibble – removing broken particles and dust;
Fermented feed: Removing lumps, impurities, and under‑fermented large particles;
Wet feed screening: Screening and dewatering of high‑moisture feed ingredients;
Raw material pre‑treatment: Impurity removal and grading of corn, soybean meal, wheat bran, fish meal, bone meal, and other feed ingredients;
Feed additives: Fine screening of premixes, additives, and other powdered materials.
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
