the fire water supply system is the cornerstone of urban fire safety, and the quality of seamless pipes (smls) for fire water supply is crucial. choosing a high-quality fire-fighting water supply seamless pipe manufacturer can provide you with reliable products and services to ensure fire safet

the roughness of carbon steel pipe (cs pipe) refers to an index of surface quality, which is usually used to describe the smoothness of the surface of carbon steel pipe after processing. it is usually expressed in ra value (average roughness) or rz value (maximum peak height). the measurement o

with the development of society, the output of steel is gradually increasing, and the demand is increasing. therefore, the development of modern cities cannot be separated from carbon steel tubes. carbon steel tubes are widely used, such as the construction of electrified high-speed railways, substa

for the seamless tube astm standard, different material with different steel grade,besides, their mechanical properties and chemical composition, metallurgical properties are all different.there are list for astm standard with different steel grade.astm a53 / a53m standard specificati

the seamless steel tube is made of high-quality round steel as the main material, and then the round steel is perforated. the principle of perforation is to use high temperature to soften the round steel, and then use the plug to remove all the solid parts in the middle to become hollow round steel,