1) Standard: DIN, BS,ANSI 2) Material: Carbon steel 3) Grade: Grade4.8, grade5.8, grade8. ... A320 L7_ASTM A194 GR. 7 ASTM A320 L7M_ASTM A194 GR7M 2) Material: 1040, 1045, 4140, 4142 3) Grade: Grade4.8, grade5 ... ,grade12.94) Diameter: 3mm-52mm ,1/4"-3/4", 3/16"-2"5) Length: the DIN length general ( 1000mm to 3000) ,the ...