description：Product performance standards

High-pressure double-headed bolts: GB897, GB898, GB899, GB900, GB901
American Standard BOLT: A193 B7, A193 B7M, L7, L7M, B16, B8, B8M
Festival live bolts: GB798
Steel with high strength large hexagon head bolts: GB/T1228
Steel with high strength large hexagon nuts: GB/T1229
High-pressure nut: GB6170, GB6175, GB55
US-made heavy-duty Nut: A194 2H, A194 2HM, 4,7,8,8 M

Product material quality carbon structural steel selection, steel manufacturing, with high accuracy,
High strength, excellent high and low temperature performance characteristics.

Product Material:
35 #, 45 #, 35CrMoA, 42CrMoA, 25Cr2MoV, 304,316,304 L, 316L,
Mechanical properties :8.8-12.9
Metric specifications: M8-M56 American-made specifications: 3/8----2 "
Product temperature: -63 ℃ --- +500 ℃ Pressure: ≤ 320Mpa
Precision grade: 6h grade