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Flat welding flange refers to the flange connected to the container or pipeline by fillet welding. It can be any flange. According to the degree of integrity of the flange ring and straight section at the time of design, check the integral flange or loose flange respectively. There are two types of
The protective gas pressure of the welding flange is to avoid slight leakage of the welding flange. The protective gas in the furnace must be connected to a certain positive pressure. Assuming it is a hydrogen protective gas, it is generally required to be above 20kBar. Annealing air, welding neck f
Manhole covers can be said to be often seen in our daily life. Manhole cover manufacturers also spend time on its design when designing manhole covers. The development of ductile iron manhole covers is based on the addition of spherical high-purity graphite on the basis of traditional cast iron manh
Ductile manhole covers have better ductility. Its impact resistance is more than 10 times that of gray iron materials, and ductile iron manhole covers have been widely used in the key elements of main pole roads. Its compressive strength is relatively high, and it can be as high as high carbon steel
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