Simple helicopter blade set without tension bar for concrete screeding machine 34 cm × 10 cm

Simple helicopter blade set without flange (tightened with 4 pieces) for electric concrete screeding machine measuring 34 cm × 10 cm, Chinese manufacturing:---📋 Proposed technical description Product: Simple helicopter blade set (without flange) Quantity: 4 pieces Dimensions and sizes Total blade length: 34 cm Width (effective width from edge to edge): 10 cm Suggested thickness: approximately 2.5 – 3 mm (may vary depending on availability) Installation and fixing Fixing holes: each blade usually has two or more holes for mounting on the machine's rotating arm Type of holes: round or oval for easy adjustment and movement Installation direction: blades are installed so that the front edge is slightly inclined for screeding, without flange or additional support — the blade is “simple,” meaning a flat surface on the working side Materials and physical specifications Material: high-quality carbon steel or manganese steel (to increase corrosion resistance) Surface treatment: may be coated with an anti-rust layer or corrosion-resistant paint Edges: beveled or flattened to enhance screeding efficiency Durability: should withstand concrete contact and rough components without rapid peeling Performance and function Role: used in finishing stage, helping to smooth the concrete surface after the rough phase Without flange: means the blade does not contain supports or additional adapters (flange) — the entire surface of the blade works on the concrete “tight 4”: may indicate that the blades are fixed with four tightening points (or that the set consists of 4 blades) Low consumption if precisely designed, but should be replaced when heavily worn (according to manufacturer recommendations)