So strong, durable, etc. as to be suitable for industrial use.
Hardware or software designed for fault tolerant operation. It mostly refers to software that has built-in safeguards against failure. For example, an industrial-strength operating system does not lock up the computer if an application fails. Industrial-strength features in a database (DBMS) ensure the quality of the data (see referential integrity and two-phase commit). Programs become industrial strength after being thoroughly tested in live user environments for extensive periods. See bulletproof.