There are many reasons for longitudinal cracking of seamless pipes, both material and process reasons. Taking the thick-walled seamless steel pipe as an example, if the thick-walled seamless steel pipe has poor plasticity or poor annealing, the probability of longitudinal cracking will increase, but the fundamental reason is that the residual stress of the cold-drawn thick-walled seamless steel pipe…
Read MoreSales name：Arthur Project location：Asia Product：Hot rolled seamless steel pipe Standard and material：ASTM A106 GRB/APL 5LB/STKM 13A Specifications： 83MM*16MM 127MM*20MM 232MM*20MM Usage：For fine machining Inquiry time：2021.12.30 Order time：2022.03.11 Shipping time：2022.03.23 Arrival time：2022.03.27
Read MorePrinciple of ultrasonic flaw detection of seamless steel pipe (smls): Seamless steel pipe is a steel pipe that is perforated from a whole round steel and has no welds on the surface. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler pipes, bearing pipes and high-precision structural steel pipes for automobiles, tractors…
Read MoreProject Site: South America Product: Seamless Elbow Size: 30 inch Standard & Material: ASTM A860/MSS SP-75 Application: Construction of oil pipelines Inquiry Time：2021.9 Contract Time：2021.10 ETD: 2022.1 ETA：2022.2 In September 2021, Xinyue received an inquiry for a new project from an regular customer in South America. The terminal is a famous oil company in South America. The required products…
Read MoreThe large-diameter thick-walled steel pipe has super strong bearing performance and can withstand a large impact force. It is widely used in the frame at present. When the vehicle is turning at a high speed or braking and stopping suddenly, the high-strength steel pipe can easily digest the strong impact. The impact force ensures the safety and maneuverability of…
Read MoreSurface machining defects of seamless steel tubes and their prevention: 1.The surface processing of seamless steel tubes mainly includes: surface shot peening, overall surface grinding and mechanical processing. 2.Purpose: To further improve the surface quality and dimensional accuracy of seamless steel pipes. 3.The tools for overall grinding of the outer surface of the seamless steel tube mainly include: abrasive…
Read MoreThere are many kinds of base materials for anti-corrosion steel pipes, such as spiral steel pipes (ssaw), straight seam steel pipes, seamless steel pipes, etc. Therefore, the quality of anti-corrosion steel pipes must be judged from the base material and anti-corrosion quality. 1. Anticorrosion (1) The appearance is delicate and the workmanship is good, without burrs. (2) The internal…
Read MoreFor the manufacture of seamless steel tubes, the corresponding annealing treatment must be carried out after each cold drawing. Purpose of annealing: 1. Reduce hardness and improve machinability. 2. Eliminate residual stress, stabilize size, reduce deformation and crack tendency. 3. Refine the grains, improve the structure, and eliminate the defects of the structure. 4. Homogenize material organization and composition,…
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.
