... -class ultra-low carbon stainless steel, is a modified type 316L, an austenitic ferritic duplex stainless steel one, dedicated to urea ... industry, it said urea level 316L. Because of its excellent resistance to weld hot cracking resistance ... , GL, ABS, NK, KR, CCS Main Material:300 series.: 304/L, 304H, 316L,316Ti, 317L, 309S/309H, 310S, 321/H, 347H,316LMod ...