... ,Z25, Z35 are available for various grades. 3.US Tests: JB4730, GB/T2970, A435, A577, A588, JISG0801, JISG0901, SEL072, BS5996, NFS04 ... delivery states are available for customers’ requirements. 3.US Tests: JB4730, GB/T2970, A435, A577, A588, JISG0801, JISG0901, SEL072, BS5996, NFS04 ...