... ), UNI, JIS (Japan), ISO and TCVN (Vietnam). steel structrue bolt1.Application:railways, highways, bridges, plants,etc. 2.Certificate:ISO9001:2008. 4.Also ... & South Africa etc. Product: BoltsStandard: DIN, JIS, ANSI/SAE/ASME, ISO, BS, AS standard.Diameters Metric: from M6 to M72, Inch ...