The Hengyi instrument guarantees that the train runs safely, smoothly and without interruption according to the specified maximum speed.
Recently, there has been an increase in the demand for testing the mechanical properties of bolts. There are tests for the torsional mechanical properties of bolts, as well as the tensile strength and yield strength of bolts. Today, we will briefly introduce one type of bolts and pull the bolts:
For the bolts, the round steel bolts of the two ends are also used, which are also called the wall bolts. It is also useful to insert the fixed wedges with the wedge irons at the ends of the flat steel. Because bolts are also a type of railroad accessory, railroad fittings are part of the railroad line, and the rails referred to here include rails, sleepers, joint parts, track beds, anti-climbing equipment, rail stays, and ballasts. As a holistic engineering structure, the track is laid on the roadbed and plays a guiding role in train operation, directly bearing the tremendous pressure of the rolling stock and its load. Under the power of train operation, its various components must have sufficient strength and stability. The balance wing instrument ensures that the train runs safely, smoothly and without interruption according to the specified maximum speed.
The bolts for steel structure connection are divided into more than 10 grades of 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc., of which the bolts of grade 8.8 and above are made of low carbon alloy steel or medium carbon steel. (Quenching, tempering), commonly known as high-strength bolts, the rest are commonly referred to as ordinary bolts. The bolt performance grade label is composed of two parts. The balance wing instrument represents the nominal tensile strength value and the yield ratio of the bolt material.
Http://news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Bathroom Sink Faucet,Bathroom Water Filter,Bathroom Water Tap,Brass Kitchen Faucet
kaiping aida sanitary ware technology co.,ltd , https://www.aidafaucets.com