The reason why this is said is that, when the low temperature pipe flange is assembled, if it is fastened with stainless steel bolts and nuts, it is very easy to bite after a period of time. This is because after the screwing, the overall structure of the thread and the screw will be slightly deformed, resulting in a tighter bite; or after a long time, the screw and the screw hole will be "fused". At this point, if you want to remove the screws and nuts, you will need more force to overcome the friction of the threaded connection and overcome the energy generated by the deformation of the material and the destruction of the intermolecular polymerization. In short, it will become particularly difficult. The invention and use of stainless steel dates back to the First World War. British scientist Henry Breelley was commissioned by the British government's military arsenal to improve the research. At that time, the guns used by the soldiers were extremely wearable, and Brillley wanted to invent an alloy steel that was not easy to wear. The reason why the stainless steel screw and the nut cannot be used together is that the stainless steel bolt and the nut often bite after fastening in the assembly of the low temperature pipe flange, and it is difficult to remove it again. Editor in charge: Hu Na Pvc Foam Board Wall Panel,Pvc Foam Board Cutter Fireproof,Pvc Foam Board 18Mm Sheet,Pvc Foam Board 5Mm Linyi Hmbyan International Trading Co.,Ltd , https://www.hmbyandecor.com