SPECIFICATIONTESTING'S EMD Scaffolding Tubes: Made from tested killed steel outer dia 48.3mmx4.0mm thickness as per BS:1139 TYPE-3 ,Minimum Yield Stress235N/mm2 (34 Ksi) (24Kg/mm2)- wall thickness 3.2MM less will not acceptable. Finish- Pure Hot Dip Galvanized as EN 10240A 1 1- MTC 1- MTC 1- MTC 1- MTC 1- MTC