Hot dip galvanized scaffolding steel prop is also called scaffolding jacks, made by OD48mm inner with holes on and OD60mm outer with prop sleeve and heavy duty forged or casted steel prop nut with handles for concrete formwork system of slab formwork, table formwork, wall formwork, beam formwor etc. 
The scaffolding jacks is in heavy duty made by 4.0mm and 3.2mm S355 steel grade steel tube for both inner and outer tubes. Other specifications of scaffolding jacks can be 1.6mm,1.8mm and 2.0mm for light duty props, 2.5mm, 2.8mm, 3.0mm-3.6mm for middle duty scaffolding props. 
The scaffolding jack is adjustable with minimum height closed and maximum height opened by inner tube holes and g pins as well as sleeve adjusting. 
Scaffolding props in heavy duty also called post shore and shore post prop in USA and UK market. 
Size of shore post/ post shore prop can be 0-4#
Wellmade scaffold produces big quantity of adjustable steel props used for formwork, false work and shutterings every month exported to 49 countries. 
With 50,000m2 production area, ISo9001 &CE certificate, complete quality controling system and independent testing house, wellmade scaffold offer high quality standard scaffold jacks conform to EN BS standard and high safety quality for more than 20 years worldwide by its 1) raw material testing in chemicals and physicals 2) welding line testing for safety 3) loading capacity testing
Wellmade scaffold is not only an OEM scaffolding factory work with famous formwork engineering companies, scaffolding distributor and rental companies but also scaffolding material vendors for constructino companies, marine service companies, oil and gas groups, petroleum and petrochemical construction companies, contractors by its top quality and competitive price. 
door to door delivery and custom clearance services for construction companies and oil and gas groups are available as request in 49 countries. 
More informatinon about scaffolding jacks and formwork steel props can get from wellmade scaffold webiste wellmadescaffold.en.made-in-china.com