2016CB/T 4438-2016 Cylinder head bolts, through bolts and main bearing bolts for marine diesel engines
1968CB 703-1968 Specifications for cylinder head bolts, through bolts and main bearing bolts of diesel engines
CB 703-1968 Specifications for cylinder head bolts, through bolts and main bearing bolts of diesel engines was changed to CB/T 4438-2016 Cylinder head bolts, through bolts and main bearing bolts for marine diesel engines.