What is an oil casing coupling? Oil casing coupling is a kind of oilfield drilling tool, mainly used for the connection of oil pipes. The oil casing coupling mainly solves the problem that the existing coupling is prone to fatigue and fracture due to stress concentration. The coupling structure of the oil casing is: the end of the oil…
Read More1. Pipe for pipeline. Such as seamless pipes for water, gas and steam pipelines, oil transmission pipes and pipes for oil and gas trunk lines. Faucet with pipe for agricultural irrigation and pipe for sprinkler irrigation, etc. 2. Pipes for thermal equipment. Such as boiling water pipes and superheated steam pipes for general boilers, superheated pipes, large smoke pipes,…
Read MoreFor the defects of seamless steel pipes, magnetic flux leakage detection method, ultrasonic detection method, eddy current flaw detection method, etc. can be used. 1. Magnetic flux leakage detection method The magnetic flux leakage detection method is to use the magnetic flux leakage principle to detect the seamless steel pipe. During the inspection process, the inspected seamless steel pipe…
Read MoreAnalysis of the causes of common defects in seamless steel pipes: (1) Reasons for the irregular distribution of folding defects. Improper viscosity of mold slag, obvious abnormality of molten steel vortex or abnormal vibration frequency of mold will cause slag entrainment. Most of the mold slag exists in the subcutaneous or surface area of the continuous casting billet, so…
Read MoreCommon defects of seamless steel pipes can be divided into two categories: external surface defects and internal surface defects. 1. External surface defects (1) Folding defects are irregularly distributed. Macroscopic features: If there is mold residue left on the surface of the continuous casting billet, the outer surface of the rolled tube will have deep folds.There are stacking defects,…
Read MoreWhen the carbon seamless steel pipe is cold drawn, there are defects such as cracks in the hot rolled tube blank. For example, after the high-precision cold-drawn tube is made into an oil cylinder, the fracture that occurs during use has almost no plastic deformation, and is generally brittle fracture. Brittle fracture is caused by a variety of reasons….
Read MoreThe main reasons for the lack of hardness of seamless steel pipes (smls) are the following five points: 1. The heat treatment temperature is too high This is mainly caused by the poor temperature setting of the processing technology or the error of the temperature control system. The temperature of the processing technology should be adjusted, and the temperature…
Read More1. Large diameter thick wall seamless steel pipe is used for the manufacture of large shaft and roller assemblies, oil cylinder and hydraulic oil cylinder, mechanical spare parts, mechanical structure, large airports, bridges, wharfs and building structures 2. In our daily life, large-diameter seamless steel pipe is a very common channel, which is mainly used in sewers and water…
Read MoreXINYUE STEEL GROUP set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, Seamless Steel Pipe, Scaffolding system and couplers, RHS, SHS, etc.
