GB/T18254 | High carbon chromium bearing seamless steel tube |
ASTM A 295 | Wearable high-carbon bearing seamless steel tube |
ASTM A 534 | Wearable & cementite bearing seamless steel tube |
JIS G 4805 | High-carbon chromium bearing seamless steel tube |
DIN 17230 | Ball bearing seamless steel tube delivery technical condition |
NF A 35-565 | Steel product,q4ality of bearing steel |
GB/T 3203 | Cementite bearing seamless steel tube delivery technical condition |
GB/T 3093 | High-pressure seamless steel tube for diesel engine |