... 8--80mm Certificate ISO and API Bevel PE BE Big diameter steel pipe(LSAW)StandardsGB/T3091-2008,GB/T9711.1, API5L etc ... ,Q345B, ASTM A53GrB,L245, X42-X70,API5L GrB, etc.ApplicationsStructural pipe, liquid transportation, conveyance of oil and gas, petroleum transportation etc ... or packed in hexangular bundles with strong steel strip and plastic caps to pretect the both ends or as the customers ...