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The perform to Standard : DIN 2391, DIN1629, DIN1630, DIN2448, DIN2458, DIN17100, DIN17175, EN10305-1, EN10305-4, EN10210, EN10216, BS3059, BS3003, BS6323, DIN17175, JIS3445 ASTM A53, ASTM A106, ASTM A178, ASTM A179ASTM A192, ASTM-A209, ASTM A210, ASTM A334, ASTM A335, ASTM A513-5ASTM A519, etc. Carbon steel grade: ST52, ST52-4, ST45, ST45.8, ST37, ST37.4, ST35, ST35.8, SAE1010, SAE1020, SAE1035, SAE1045, ST30AI, E215, E235, E255, E355 etc. Alloy Steel Grade: 20G 37Mn5 25Mn2 30Mn2 25Mn2V 33Mn2V 36Mn2V 30CrMo 15Mo3, 13CMo44, 10CrMo910, STKM 11A, STMA 12A, STKM 13C 12Cr1MOVG 27CrMo44 etc The specification range : OD15mm-OD240mm and WT1.0mm-WT26mm. Product condition: BK, BKS, BKW, NBK, GBK Tolerance Diameter: Inner Diameter H7, H8, H9, H10 with Surface Roughness Ra. 0.4 to 1.6.
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