Learn how agricultural sprayer frames are fabricated for crop protection equipment. Discover material selection, chemical resistance, and real-world manufacturing.
What Buyers Mean by Agricultural Sprayer Frame Fabrication
Agricultural sprayers apply pesticides, herbicides, and fertilizers to crops, requiring frames that support spray tanks, booms, and pumps while resisting chemical corrosion. These frames must withstand vibration, chemical exposure, and field conditions. At Fulei Metal, we fabricate sprayer frame components for agricultural equipment manufacturers across Europe and Southeast Asia.
Sprayer Frame Types
Tractor-mounted sprayer frames attach to tractor three-point hitches. Trailed sprayer frames support sprayers on their own wheels. Self-propelled sprayer frames integrate sprayer with vehicle chassis. Boom support frames extend spray booms to cover wide swaths. Tank support frames hold spray solution tanks. Pump and valve housings protect spray system components.
Sheet and Grade Selection for Agricultural Sprayer Frame Fabrication
Stainless steel (grade 304 or 316L) is the preferred material for sprayer frames due to superior corrosion resistance against agricultural chemicals. We use 2.0 to 4.0 mm sheet and tube. Galvanized steel provides cost-effective frames with adequate chemical resistance for less aggressive chemicals. Powder coating over galvanizing provides additional protection and color options. All materials must withstand continuous exposure to spray chemicals without degradation.
Design Points for Agricultural Sprayer Frame Fabrication
Frames must support the weight of spray tanks when full, which can be significant. All components must resist corrosion from spray chemicals, including fertilizers, pesticides, and herbicides. Boom support frames must withstand wind loads and boom weight while maintaining boom stability. Designs must provide access for pump, valve, and nozzle maintenance. All edges must be smooth for operator safety. Components must accommodate various tank sizes and boom configurations. Chemical resistance must be verified for specific chemicals used.
From Flat Blank to Finished Agricultural Sprayer Frame Fabrication
Our TRUMPF fiber laser cuts frame components, tank supports, and boom brackets from flat sheet stock with precise dimensions. CNC press brake machines form frame profiles, support brackets, and mounting components. Tube processing equipment cuts and notches frame tubes. Component assembly uses TIG welding for stainless steel and MIG welding for galvanized steel, with continuous welds for chemical containment. Surface treatments include electropolishing for stainless steel, powder coating, and galvanizing.
Field Notes: Sprayer Boom Frames
A sprayer boom is a long, light structure that has to stay level, and those two requirements fight each other. Booms are now wide enough that an ordinary steel section would be too heavy to carry at the far end, so the structure is built from formed sections and triangulated rather than from heavy beams, and the design question becomes stiffness in bending and in torsion rather than strength. From a fabrication point of view that means the boom is welded in a fixture and checked for straightness over its whole length as well as for square, because a boom that is straight when it is built can still bend once its own weight is on it. The hinge and folding points are the other critical area, since a folding boom concentrates load at a small number of joints, and those joints are the parts that get checked for wear in service.
Getting Agricultural Sprayer Frame Fabrication Sampled and Approved
Agricultural sprayer frame fabrication requires chemical resistance engineering, structural design, and precision welding. Fulei Metal’s capabilities make us a trusted partner for crop protection equipment projects.
Fulei Metal builds components like this in-house. The DFM engineering review page explains how the process is set up and checked, while custom sheet metal fabrication covers the materials and finishes we normally run. Related reading: Go-Kart Frame Fabrication.
Sprayer Frames: Chemical Exposure and Vibration
A frame for an agricultural sprayer carries a tank, a pump and a boom, and it works in conditions that are hard on metal in two specific ways. Chemical exposure: fertiliser and crop protection products are corrosive, and residue left on a frame after a day’s work will attack a coating from the outside. Vibration: a boom frame is a long cantilever on a moving machine, and the fatigue load sits at the welds nearest the mounting points.
Both are addressed on the drawing. Chemical exposure by specifying the coating for the products used — and by designing so the frame washes down, with no ledge or open tube where residue collects. Vibration by placing welds away from the highest-stress points where possible, by using a gusset rather than a heavier section at a corner, and by keeping the boom mounting face flat so the fasteners are not bending as well as clamping.
Can you build to our existing sprayer drawings?
Yes. Send the drawings with the tank and pump mounting points, the boom loads, and the products the frame will be exposed to, and we will flag anything that will trap residue, will not wash down, or puts a weld at a high-stress point.
Do you supply the tank, pump or boom?
No. We fabricate the frame, the mounting cradles and the boom support hardware. Tanks, pumps, nozzles and control systems are yours or your equipment vendor’s, and the conformity assessment of the complete machine belongs to them.
Galvanizing, Welds and What to Specify Together
Coating and fabrication sequence decide the service life on this part type more than the coating specification does. All cutting, welding and drilling done before hot-dip galvanizing leaves every edge and every weld coated; anything done after leaves bare steel at the exact places where corrosion starts. Where a frame has to be drilled on site to fit a tank, the coating plan needs to allow for it, and that is worth settling at enquiry stage.
Weld quality is the other item to specify together with the drawing rather than separately. A structural weld on a boom support needs a stated acceptance level and, where the drawing calls for it, a non-destructive examination. Where it does not call for one, visual inspection to the agreed level is what the process produces — and the difference is a line on the drawing, not a difference in how the weld is made.
Inspection follows the buyer drawing and the approved sample, with general tolerances to ISO 2768 unless stated. Mounting point positions are checked on a sample from each batch and coating thickness is recorded. Material and coating documentation is issued per order — see material certification and traceability. Frames are bundled with separation between coated faces; for export consignments see export packaging standards.
Need a Similar Part?
Most enquiries that start on a page like this are not an order for Agricultural Sprayer Frame Fabrication — they are a search for a factory that can make something like it. Send us your drawing, 3D model or sample and we will review the manufacturing process and the quotation requirements, then come back with a process plan, a price and a lead time.
We work from 2D drawings, STEP / DWG / DXF / PDF files, or a physical sample if that is all you have.
No complete drawings yet? Describe the part, send photos or a sketch, or send a sample — we can start from there. Discuss your project.
Trade Terms and Delivery
We quote under the standard Incoterms your logistics team already works with, and build the packing and documentation around the one you choose.
- EXW — you collect from our Ningbo facility and run export clearance through your own forwarder.
- FOB Ningbo — we deliver to the vessel at Ningbo port and handle export clearance.
- CIF — we cover carriage and insurance to your named destination port.
- DDP — we handle carriage, insurance, import clearance and duties through to your door.
Send your destination country, target delivery date and preferred trade term together with the drawing. Request a quotation.
Payment Terms
How a project is paid for is agreed before production starts, and the structure that applies to your order is stated on the quotation and on the order confirmation, so there is no ambiguity later.
- 30% advance payment with the order and the 70% balance before shipment — our standard structure.
- 70% advance payment with the order and the 30% balance before shipment — used for some projects.
- 100% payment in advance before production starts — used for some projects.
If your finance team works to a fixed structure, say so in the first enquiry and we will confirm what applies to your order before you commit. Request a quotation.
Quotation Time
We quote from your drawings. How long that takes depends on what the part asks for:
- Simple parts — quoted within 24 hours. Laser-cut blanks and bent components, supplied with complete 2D or 3D drawings. Mon–Fri, GMT+8.
- Complex assemblies — quoted after the drawing review. Payment kiosks, multi-part welded frames, enclosures with purchased hardware, or anything needing a coating or assembly trial. We confirm a quotation date once the scope is clear.
Production lead time is quoted separately, after drawing review and process confirmation. Send your drawings.
What stands behind this quotation
- Manufacturing since 20162,500 m² Ningbo plant — 3 laser cutting machines (including newer TRUMPF), 4 CNC press brakes and 10 welding stations.
- Shipped to more than 30 export marketsEnclosures, cabinets and formed parts supplied to OEM buyers across Europe, North America and Asia.
- 123 documented product casesMedical device housings, HVAC and heat pump enclosures, agricultural and livestock equipment, industrial hydraulics, material handling trolleys and EV charging cabinets.
- Factory evidence you can checkTUV Rheinland audit reference MIC-ASI243729 and Bureau Veritas reference MIC-ASR263630 available for buyer review on request.
Before you send drawings: project confidentiality is default · first-article inspection is carried out before a batch continues · pricing is staged from prototype quantity to repeat volume · pre-shipment photos and packing records are prepared when the project needs them.