Machinery category
Seed processing lines, cleaning, grading and treatment plants
A seed processing line is sized from the certified seed you must deliver in a short seasonal window, the cleaning and grading losses along the way, and the crops it must switch between — not from a cleaner's nameplate rate. This page helps you prepare a seed cleaning, grading, treatment and packing project — intake, pre-cleaning, fine cleaning, gravity separation, optical sorting, treatment, coating, bagging and storage — up to the point where manufacturers can quote comparably. Before any manufacturer is contacted you must confirm crops and varieties, raw intake, target purity and germination, seasonal window, treatment chemistry and acceptance criteria. It is for seed companies, cooperatives, agro-processors, public seed authorities and project developers.
Next step: Calculate annual certified output and bag counts from your intake and cleaning yield, then complete the RFQ blocks and send the brief for human review.
Direct answers
What is a seed processing line?
A seed processing line is the intake, pre-cleaning, fine cleaning, gravity separation, sorting, treatment, coating and bagging equipment that turns harvested raw seed into certified, treated and packed seed. It is specified by crop, intake rate, target purity and the seasonal window available.
How do I size a seed cleaning plant?
Divide the raw intake tonnage by the number of days in your seasonal processing window and the net run hours per day, then add the cleaning and grading losses for each crop. The resulting tonnes per hour, stated per crop, is the design point manufacturers must quote against.
Why is the seasonal window critical for seed plants?
Seed must be processed within a narrow post-harvest period, so a plant sized on annual average tonnage will be undersized in practice. Always state the harvest window in days and the hours available per day, because they set the required hourly capacity.
Typical scope
- • Intake, pre-cleaning, drying interface and buffer storage
- • Fine cleaning: air-screen cleaners, indent cylinders and de-awners
- • Gravity separation, spirals, length and density grading
- • Optical and colour sorting, plus size calibration
- • Seed treatment, coating, pelleting and drying
- • Bagging, big-bag, labelling, traceability and finished-seed storage
Confirm before manufacturers are contacted
- • Crops, varieties and the switching sequence between them
- • Raw intake tonnage and the seasonal processing window in days
- • Target purity, germination, thousand-kernel weight and impurity limits
- • Expected cleaning and grading losses per crop
- • Treatment chemistry, dosing accuracy, operator safety and ventilation
- • Bag formats, labelling, certification and traceability requirements
Who this is for: Seed companies, cooperatives, grain and agro-processors, breeding organisations, public seed authorities, food-security programmes and project developers.
Country notes: Spain, Germany, Italy, France, Poland and Central Europe, Turkey and the Middle East
The planning method is the same everywhere, but the constraints that decide the specification are local: raw-material seasonality, utilities and grid capacity, language of documentation, the food-safety or conformity standard your customers audit against, and the downtime a working plant can accept. Add your country in the calculator below and it is carried into the brief our team reviews.
Seed processing lines, cleaning, grading and treatment plants in Spain
Seed plants in Spain handle short, weather-dependent intake windows for cereals, maize, vegetable and horticultural seed. State the season length in days, the shift model you can actually staff at harvest, and whether treatment and pelleting are in scope.
Seed processing lines, cleaning, grading and treatment plants in Germany
German projects are specified around certified-seed traceability, documented sampling and germination testing, dust and treatment-safety rules, and German-language documentation. State the certification scheme, the lot-separation requirement and the purity level accepted at SAT.
Seed processing lines, cleaning, grading and treatment plants in Italy
Italian plants often process many small lots of different species. State the number of species and lot changeovers per season, since cleaning between lots — not nominal cleaner capacity — usually determines the real throughput you achieve.
Seed processing lines, cleaning, grading and treatment plants in France
Confirm French-language documentation and operator training, seed-treatment handling and operator-exposure rules, and the certification body that inspects your lots. Treatment and coating scope should be quoted separately from cleaning and grading.
Seed processing lines, cleaning, grading and treatment plants in Poland and Central Europe
Projects are typically cereal and maize volume plants with strong bagging and dispatch requirements. State raw intake per season, target certified output, bag formats and big-bag share, plus available drying and storage capacity ahead of the cleaning line.
Seed processing lines, cleaning, grading and treatment plants in Turkey and the Middle East
Confirm ambient dust and humidity, incoming moisture and whether drying is in scope, grid stability, and the local certification or inspection regime. These change pre-cleaning, drying and dust-handling scope more than the grading machines themselves.
Projects outside these countries are handled the same way. Global B2B Group does not represent, certify or guarantee any manufacturer in any country, and buyers are never automatically connected to suppliers.
Seed processing lines, cleaning, grading and treatment plants calculator
Enter your own figures to see the planning numbers a manufacturer needs, then turn them into a structured brief. Inputs, assumptions and limitations are yours: this is indicative planning only, not an engineering design, a supplier quotation, a performance guarantee or a financing approval.
Inputs
Planning results
- Required intake capacity
- 6.3 t/h
- Certified seed output
- 9,360 tonnes
- Treated / coated volume
- 6,552 tonnes
- Equivalent bags per season
- 374,400
12,000 t over 120 days x 16 h
at 78% cleaning and grading yield
70% of output
25 kg bags
Serious project review, supplier routing and financing-pathway discussion generally start from an expected total project value of USD 250,000. Buyers are never automatically connected to a manufacturer: the Global B2B Group project team and the human team review qualifying projects first.
Generated project brief
Project brief — Seed processing lines, cleaning, grading and treatment plants Product / process: (to confirm) Country: (to confirm) Indicative budget: (to confirm) Timeline: (to confirm) Planning assumptions and results: - Raw seed intake: 12,000 tonnes per season - Seasonal window: 120 days x 16 net run hours (design point 6.3 t/h) - Cleaning and grading yield: 78% (certified output 9,360 tonnes) - Treatment / coating: 70% of output (6,552 tonnes) - Bagging: 374,400 bags of 25 kg Must be confirmed before manufacturers are contacted: - Crops, varieties and the switching sequence between them - Raw intake tonnage and the seasonal processing window in days - Target purity, germination, thousand-kernel weight and impurity limits - Expected cleaning and grading losses per crop - Treatment chemistry, dosing accuracy, operator safety and ventilation - Bag formats, labelling, certification and traceability requirements Acceptance criteria to agree: FAT and SAT scope, measurement method, sample period, tolerances, downtime and out-of-range behaviour. Note: indicative planning only. Not an engineering design, quotation, performance guarantee or financing approval.
Structured RFQ checklist & production-line planner
Enter your capacity assumptions to get an indicative annual output and CAPEX planning band, then confirm the eleven RFQ blocks manufacturers need before they can quote comparably. Each block links to the readiness page and to a real person on WhatsApp.
Inputs
Indicative planning result
- Nominal capacity
- 4.80M units/year
- Effective at 75% OEE
- 3.60M units/year
- CAPEX planning band
- USD 5.04M – 15.12M
- RFQ readiness
- 0% (0/11)
Inputs, assumptions and limitations: the band is derived from your own capacity figures and a broad CAPEX intensity range per project family. It excludes building works, land, duties, working capital and local installation conditions. Indicative planning only — not an engineering design, supplier quotation, performance guarantee or financing approval.
Industrial RFQ readiness — eleven blocks
How do I prepare an RFQ for a custom production line?
Work through the eleven checklist blocks below: product and capacity, inputs and outputs, process and equipment scope, automation and quality, site and utilities, installation and service, budget and timeline, compliance, open assumptions and acceptance-test criteria. Complete blocks make supplier quotations comparable.
How accurate is the planning calculator?
It is an indicative planning estimate derived from your own capacity inputs and a broad CAPEX intensity band per project family. It is not an engineering design, a supplier quotation, a performance guarantee or a financing approval.
What is the minimum project size for human review?
Formal project review, supplier routing and financing-pathway discussion generally start from an expected total project value of USD 250,000. Below that, planning guidance and calculators remain available.
Does Global B2B Group connect buyers directly to manufacturers?
No. Buyers are never automatically connected to a manufacturer or supplier. The Global B2B Group project team review qualifying projects before any appropriate external routing.
Buyers are never automatically connected to a manufacturer or supplier. The Global B2B Group project team review qualifying projects before any appropriate external routing. WhatsApp is a technology-assisted, human-reviewed way to start or continue a project conversation.
Frequently asked questions
How do cleaning losses affect capacity?
Each cleaning and grading step removes impurities, light seed and off-size material, so the tonnage leaving the line is well below the tonnage entering. Size upstream equipment on raw intake and downstream treatment and bagging on the certified output, and state both figures in the RFQ.
What does crop switching require?
Changing crop or variety requires full cleaning to avoid genetic and varietal contamination, plus screen, indent and setting changes. State how often you switch and the maximum acceptable cleaning time — it directly affects machine access design, layout and effective capacity.
What acceptance criteria should a seed plant include?
Throughput per named crop at defined input quality, purity and germination after processing, treatment dosing accuracy and coverage, bag weight tolerance, dust and operator-exposure limits, and the sample period and measurement method used to verify each at FAT and SAT.
Related planning paths
Global B2B Group is committed to conducting its own activities in accordance with applicable law. It facilitates sourcing and RFQs and does not itself produce, manufacture, export or sell the listed products, or approve them on behalf of any authority. Suppliers are responsible for the products and shipments they offer and supply meeting the requirements of the origin and destination countries — for example safety, quality, labelling, traceability, sanitary or phytosanitary certificates and export documents, where relevant. Buyers remain responsible for their own import permissions, local requirements and due diligence. Requirements differ by product and country; this is not legal advice. Compliance & responsibilities · Terms
Global B2B Group is not a machinery manufacturer, engineering contractor, EPC contractor, bank, lender, pricing authority or automatic buyer–supplier marketplace. All figures on this page are indicative planning values based on your own inputs.