35GrMoA
Thread Content
Is a supervision certificate required for using 36 double-headed screws of 35GrMoA on the container? What kind of certificate is it?
According to the fixed capacity regulations, for equipment with a size of M36 and above, where the main bolts serve as primary compression elements, it is sufficient that the manufacturer of these bolts holds a license for special equipment, and can provide a quality certificate for those bolts
Chromomolybdenum steel is a very common material; it is necessary for the supplier to provide a third-party material certification, as well as the certification issued by the supplier at the time of purchasing this material – both are essential.
No supervision certificate is required......
Exactly as specified in the quality certification document, without any omissions.