Over 10,000+ customers' choice, Focus on screening industry 40+ years
GMP hygiene control in food powder production workshops sets clear and strict requirements for screening equipment:
Materials must comply with food contact standards. Material selection for equipment components that come into direct contact with food powder is the first line of defence for food safety. Ordinary carbon steel equipment is prone to rusting after prolonged contact with food powders – rust particles contaminating the material directly affect product quality and food safety. Equipment materials must comply with food contact metal material standards to prevent metal ion migration into food.
Structures must be dead‑corner‑free and easy to clean. Food powders are nutrient‑rich – if the equipment interior has dead corners such as weld recesses or sharp corners, residual material cannot be completely removed and readily supports microbial growth at room temperature – directly affecting the quality and safety of subsequent batches. Equipment design must have no dead corners, with all welds finely ground.
Fully enclosed dust‑proof design – eliminating cross‑contamination. Food powder particles are fine and lightweight – during screening, they readily generate dust. Fine powder escaping through equipment gaps into the workshop air not only pollutes the production environment but can also cause cross‑contamination between different materials. Equipment must have good sealing performance to effectively prevent dust emission during screening.
Cleaning validation must be convenient and reliable. Food production regulations require that cleaning effectiveness can be verified. Smooth surfaces and rational structural design facilitate visual inspection and sampling – ensuring the effectiveness of cleaning and sanitisation procedures.
Gaofu's S49 series food powder rotary vibrating sieve strictly follows GMP hygiene control standards for food powder production in material selection:
All‑304 stainless steel construction – compliant with food contact standards. All food powder‑contact components – screen box, feed hopper, discharge outlets, and other parts – are made of SUS304 food‑grade stainless steel. 316L stainless steel is also available upon request. 304 stainless steel offers excellent corrosion resistance and oxidation resistance – capable of withstanding attack from salts, acidic components, and moisture in food powders – ensuring no heavy metal contamination and no rust particle contamination during screening.
Corrosion‑resistant with long service life. Stainless steel offers excellent corrosion resistance – resistant to deformation and rusting under long‑term contact with hard metal powders. Normal service life is extended – significantly reducing long‑term maintenance costs and replacement frequency.
On top of the 304 stainless steel foundation, Gaofu's S49 series food powder rotary vibrating sieve features fine mirror‑polished internal surfaces, achieving surface roughness of Ra≤0.8μm. Some models can achieve even higher finish of Ra≤0.4μm.
The GMP hygiene value of mirror‑polished surfaces:
No material adhesion, no residue. Mirror‑polished surfaces are extremely smooth – food powder cannot adhere to equipment walls. Cleaning is as simple as rinsing with water and wiping with a cloth – significantly reducing cleaning time and improving equipment turnover.
No dead corners. The entire machine is integrally polished – all welds are smooth with no material‑trapping dead corners – leaving no room for bacterial growth. All welds are finely ground – no recesses, no gaps for material to hide. The entire machine is integrally stamped and formed – no welded dead corners – water and sanitiser rinsing leaves no residue.
Easy cleaning validation. Smooth surfaces facilitate visual inspection and cleaning validation – complying with food industry GMP requirements for equipment cleaning validation.
Meets GMP clean production requirements. Mirror‑polished surfaces combined with dead‑corner‑free design make the equipment fully compliant with food production licensing and GMP clean production requirements.
During food powder screening, dust emission not only causes material loss but can also lead to cross‑contamination between different materials. Gaofu's S49 series food powder rotary vibrating sieve features a fully enclosed structure – fundamentally solving this problem.
Fully enclosed screening chamber – dust has nowhere to escape. The equipment features a fully enclosed chamber design – from the feed inlet to each discharge outlet, all connections are sealed. Food powder remains in an enclosed environment from entering the screening chamber to finished product discharge – fine powder cannot escape through equipment gaps.
Food‑grade silicone seals – eliminating leak points. All equipment connections use food‑grade silicone seals – with good elasticity, corrosion resistance, and age resistance – complying with food contact material standards and ensuring long‑term sealing system reliability.
Preventing dust leakage and external contamination. The fully enclosed structure prevents dust leakage and external contamination while also preventing material cross‑contamination. For food powder production, this design improves the workshop environment while protecting product purity.
Food powder production places strict requirements on equipment cleaning and sanitisation efficiency. Gaofu's S49 series food powder rotary vibrating sieve incorporates multiple targeted design features for cleaning and maintenance:
Quick‑release structure – easy disassembly and cleaning. The equipment features a modular design – all components can be quickly removed and installed. After cleaning, the equipment can be rapidly returned to operation – shortening changeover downtime.
Screen changes take only 3‑5 minutes. The unique screen frame design enables quick and convenient screen changes – screen changes take only 3‑5 minutes. For production lines requiring frequent changeovers between different food powder varieties, this feature significantly reduces downtime.
Cleaning completed in 2 minutes. The bonded screen frame uses lead‑free solder or imported food‑grade adhesive – fully compliant with food and pharmaceutical GMP standards – cleaning can be completed in just 2 minutes.
Fully enclosed structure – minimal dust pollution. The entire machine design complies with GMP standards – material‑contact parts are made of stainless steel, and the fully enclosed structure minimises dust pollution.
While GMP hygiene standards address clean production, the core requirements of food powder screening – fine grading and efficient impurity removal – must also be ensured. Gaofu's S49 series food powder rotary vibrating sieve delivers excellent fine grading capability, providing reliable quality assurance for food manufacturers:
High screening accuracy – precise, controllable fineness. Screening fineness reaches up to 600 mesh (0.02 mm) , with filtration precision down to 5 microns. For typical food powder screening requirements, this accuracy capability provides ample margin, ensuring consistent finished product fineness.
Multi‑deck grading – multiple specifications from one feed. The equipment supports flexible configurations of 1 to 5 screen decks , enabling a single machine to simultaneously complete 2 to 6 grades of separation or filtration. The upper deck intercepts lumps and foreign matter, the middle decks achieve fine grading, and the lower deck acts as a safety screen to ensure finished product purity – one feed completes multiple steps.
Screening accuracy of 99.56%. Screening accuracy reaches 99.56%. For food powder production, this accuracy level means less rework and higher product qualification rates.
Gaofu's S49 series 304 stainless steel food powder rotary vibrating sieve is widely used for screening and filtration of various food powders:
Starches: Corn starch, potato starch, tapioca starch, etc.
Powdered sugars: White sugar powder, rock sugar powder, moisture‑proof sugar powder, etc.
Bakery ingredients: Flour, rice flour, milk powder, egg powder, etc.
Seasonings: Chilli powder, pepper powder, Sichuan pepper powder, five‑spice powder, chicken powder, monosodium glutamate (MSG), etc.
Food additives: Sorbitol, citric acid, food additive powders, etc.
Other food powders: Protein powder, solid beverage ingredients, frozen food ingredients, etc.
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.
