New classes of API SN and ILSAC GF5 | gulf.com.ua
Category ILSAC GF-1 GF-2 GF-3 GF-4 GF-5 Category API SH SJ SL SM SN Year of introduction 1992-93 1996 2001 2004-05 2010 Tests and parameters Corrosion Protection Seq.lllD llD Ball Rust Ball Rust Ball Rust Corrosion of bearing shear stability L-38...