Profile: Siddhgiri Tubes specializes in the manufacture of critical application special fastener products for the most demanding and hostile environments. We have expertise in large diameter 8.8, 10.9 and 12.9 bolts. We are an oldest Indian fasteners manufacturer, with a focus on branches like the onshore and offshore industry, construction, oil & gas, automotive and trade. We supply high quality industrial fasteners to the oil and gas industry. We are familiar with the standards and guidelines required for fasteners by every sector.