ASTM A193 B7 is a high-strength alloy steel widely used for bolting in pressure vessels, valves, and flanges. It is heat-treated and designed for high-temperature or high-pressure environments. When looking for ASTM A193 B7 Equivalent Material, several international standards provide similar properties. These include EN 10269 42CrMo4, DIN 1.7225, and AISI 4140, which offer comparable ... https://vidyafasteners.com/astm-a193-grade-b7-fasteners-manufacturer-india/