Prop sleeve and prop nut are the accessories of steel prop. Their main function is to adjust the height of prop.
Product Description
In formwork construction, the prop sleeve and prop nut work together to provide adjustable and secure support for the formwork. The prop sleeve is a threaded sleeve that fits onto the inner pipe of the steel prop, allowing for height adjustment through the threaded connection. The prop nut, with its handle, is used to rotate and secure the sleeve against the outer pipe of the prop, ensuring the prop is stable and in the correct position.
Prop Sleeve Function:
Height Adjustment: The prop sleeve's threaded connection allows for extending or retracting the prop to achieve the desired height.
Secure Attachment: The sleeve's connection to the inner pipe ensures that the prop is securely attached and can withstand the loads placed on it.
Prop Nut Function:
Height Adjustment: The prop nut, with its handle, allows for precise adjustment of the prop height by rotating the sleeve.
Secure Locking: The prop nut locks the sleeve in place, preventing it from accidentally moving during construction.
Safety: The prop nut ensures the prop is firmly secured, contributing to the overall safety of the formwork system.
Material (Sleeve): High‑quality structural steel, typically grade Q235 (or equivalent) for the tube/sleeve section
Material (Nut): Ductile iron casting or cast steel, designed for strength and wear resistance
Sleeve diameters: Standard outside diameters: 60 mm, 72 mm, 76 mm, 89 mm (or matching your prop outer tube)
Sleeve wall thickness: Range approximately 2.3 mm to 4.0 mm standard; heavier gauge available on request
Sleeve length / adjustment range: Typical lengths of 195 mm to 400 mm; custom lengths available
Thread specification: Common thread type is 4 TPI (4 teeth per inch) for British/European standard props; alternative coarse thread or customized options offered
Surface finish: Options include self‑colour (plain steel), painted or electro/galvanised finish for corrosion protection
Prop nut features: With or without handle, weight options vary by size (~250 g to ~780 g depending on diameter and handle design)
Other features: Slot(s) through sleeve body for locking pin if used; compatible with standard prop lock pin dimensions
The sleeve‑nut assembly is designed to transmit the rated capacity of the adjustable prop system with minimal contribution of its own weakness
Prop sleeves for 60 mm diameter props (wall 2.75‑3.5 mm) are used on heavy duty shoring applications and are rated for typical loads in formwork/shoring systems
Caution: Ensure that the threads, sleeve length, nut engagement and locking pin are all correct; improper installation or over‑extension may reduce safe bearing capacity significantly
Designed for repeated use: assembled/disassembled as part of an adjustable prop system in multiple cycles
Service life depends on environment, handling, corrosion, wear of threads and locking surfaces; galvanised finish and proper maintenance allow many years of reuse
Inspect sleeve for deformation, cracks or excessive wear before each reuse
Check threads (nut and sleeve) for damage, distortion or corrosion
Verify locking pin slot and pin engage correctly and securely
Clean and re‑lubricate threads if necessary and remove debris or rust
Store units in a dry, protected environment when not in use
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