A) What are the two galvanizing processes for square and rectangular tubes? Galvanized square tube, also known as galvanized square tube, is a square tube that has been galvanized. According to different production processes, galvanized square tube can be divided into two types: hot-dip galvanized square tube and cold-galvanized square tube: 1. Hot-dip galvanized square tube It is a…
Read MoreIn the process of heat treatment of seamless pipes, various defects will occur due to improper process measures or various other factors, and the existence of these defects directly affects the performance of steel pipes. 1. Crack Heat treatment cracks mainly include quenching cracks, tempering cracks and grinding cracks. When heating some large-sized steel parts and alloy billets, if…
Read MoreProject location：Vietnam Products：ERW Steel Pipe, Rectangular Pipe Standard and material：GB/T3091、GB/T3094-2012, GB/T6728-2017、Q345B, Specifications：35 items sizes in total Application：Dome Structure Inquiry time：2022.03.09 Order time：2022.03.21 Departure time：2022.06.15 Arrival time：2022.06.30 The order came from Vietnam. The customer is a local steel trader who met in year 2018, we contacted each other by telephone at first, then had a formal visit to them during…
Read MoreThe main difference between annealing and normalizing: 1. The cooling rate of normalizing is slightly faster than that of annealing, and the degree of supercooling is larger 2. The structure obtained after normalizing is relatively fine, and the strength and hardness are higher than that of annealing. The choice of annealing and normalizing: 1. For low carbon seamless steel…
Read More1.Improve the anti-corrosion conditions of the medium In order to improve anti-corrosion conditions, the following two methods can be used for cs seamless pipes. ①Remove harmful components in the medium. For example, boiler water is heated to boiling, and then the oxygen is removed before use. ②Add corrosion inhibitor. Corrosion inhibitor is a substance that can slow down the…
Read MoreA flange is a disc-shaped part that is most common in plumbing engineering.It is the part that connects the pipes to the pipes. Connect to the pipe end. There are holes on the flanges for bolts to connect the two flanges tightly. The flanges are sealed with gaskets. The main factors affecting flange sealing are: bolt preload, sealing surface…
Read MoreSubmerged arc welding is an important welding method. Its inherent advantages of stable welding quality, high welding productivity, no arc and little smoke make it an important steel structure in the production of pressure vessels, pipe sections, box beams and columns. the main welding method.In recent years, although many new welding methods with high efficiency and high quality have…
Read MoreInward folding is a common quality problem in the production of seamless steel pipes. It is the irregularly distributed sheet-like folds and spiral-like folds on the inner surface of the steel pipe, and the edges of the defects are mostly serrated. There are two main reasons for the internal folding defects: the quality of the continuous casting tube blank…
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.
