1. ISO9000 2. ASTM A792, JIS G3302, Chinese standard 3. Hard, full hard, steel 4. (0.2-1.2)*( ... 800-1500) steel1. Certificate: ISO9000 Standard: ASTM A792, JIS G3302, BS, GB, TIN, Chinese standard, factory standard, etc. Material: Hard, full hard, soft ... also we engage in trade and agent for big steel factory of China, such as Baogang, Laigang, Shagang, Taigang and etc ...