... C45/CK45, ASTM 1345/DIN 46Mn7, ASTM 5140/DIN41Cr4, ASTM1340, JIS SMn443; (2)Standard: ASTM A53, ASTM A106, ASTM A179, ASTM ... A556, BS1717, BS3059, BS3602, BS3603, BS3604, BS3606, JIS G3441, JIS G3445, JIS G3452, JIS G3456, JIS G3461, JIS G3462, JIS G3464, DIN 2391, DIN 17175, DIN 1629, DIN1630 ...