Rotavator blade

The most critical factor is the steel grade. You should prioritize Boron Steel (30MnB5) or 65Mn Spring Steel. Boron steel is preferred for high-end applications as it offers superior wear resistance and toughness after heat treatment, typically reaching a hardness of 45-52 HRC. Ensure the supplier provides a Material Test Certificate (MTC) to verify the chemical composition.

Selection depends on the application: L-shaped blades are best for heavy trash and preventing soil clogging; C-shaped blades are ideal for hard ground penetration and deep tillage; and J-shaped blades are suitable for light soil and weeding. For B2B buyers, stocking a mix of L and C types is generally recommended to cover the broadest market demand.

Look for suppliers utilizing automated forging and precision heat treatment. The blades must undergo shot blasting to remove surface stresses and powder coating or electrophoretic painting to prevent corrosion during storage. High-quality blades often feature tungsten carbide tipping or hard-facing on the cutting edge to extend service life by 2-3 times in abrasive soils.

Ensure the products meet ISO 5718 standards for agricultural machinery components. It is vital to check for dimensional accuracy, specifically the bolt hole spacing and diameter, as even a 1mm deviation can render the blade incompatible with standard rotary tillers like Maschio, Howard, or Sonalika.

Request a pre-shipment inspection (PSI) focusing on a Rockwell Hardness Test and a 90-degree bend test. Brittle blades can shatter during use, posing a safety hazard. Using Made-in-China.com's Secured Trading services can help ensure that payment is only released once the quality inspection report is approved.

Focus on weight-based pricing rather than just unit price, as steel costs fluctuate. Negotiate for custom branding (OEM)—most top-tier suppliers on Made-in-China.com offer laser-marking for logos at no extra cost for orders exceeding 1,000 pieces. Also, clarify the replacement rate for defective goods; a standard industry allowance is 1-2%.

Rotavator blades are high-density cargo. To optimize costs, use Sea Freight (FCL or LCL) and ensure the supplier uses fumigated wooden pallets or reinforced steel crates to prevent shifting. Ensure the HS Code (843290) is correctly declared to benefit from applicable agricultural machinery parts tariff exemptions in your country.

Always verify the supplier's Business License and Export Qualification on the platform. Prioritize Audited Suppliers on Made-in-China.com, as they have undergone third-party verification by agencies like SGS or Bureau Veritas. Avoid direct wire transfers to private accounts; always use official corporate accounts linked to the trade contract.