Square pipe welding is suitable for surface treatment of materials. Square pipe welding can be used for ceramic ceramic, metal ceramic and metal metal welding.Steel for construction and engineering according to the classification of use without phase transformation or partial phase transformation of square tube: A. ordinary carbon structural steel; b. Low alloy structural steel; c. Steel reinforcement.WesteroThe difference between qb square tube and QA is that there are fewer impurities s and P and better low-temperature impact performance. From the welding point of view, when the impurity elements in the base metal are less, it is good for welding hot crack.The technology of floating mandrel and square tube is gradually mature.Banjo Gore,WesteroWhere do galvanized square tubes sell,During the pushing process of spot welding and repair welding elbows, so manufacturers usually use thick spot pipes. If thin raw materials are used,Westero40 price list of galvanized square pipe, the products produced must be unqualified. Generally, there are about wires thinned. If the technology is not good or the drawn pipe is used, the thickness is significantly lower than the standard.So flat, and the size and thickness are not standardized, it can reflect that this square tube is a poor product& rdquo;The second is the pickling of the square pipe. Both chemical and electrolytic methods are used when pickling the square pipe. These two methods can remove the oxide skin of the square pipe.

Cold drawn or cold rolled precision square tube (gb-) is a cold drawn or cold rolled precision square tube with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. The selection of precision square mechanical structure or hydraulic equipment can greatly save machining hours, improve material rate and improve product quality.On the basis of thermodynamic calculation,WesteroFabrication of galvanized square pipe, the quality assurance of square tube, rectangular tube seamless square tube, galvanized square tube and galvanized tube is professional. New and old customers are welcome to consult during the preferential activities. The process conditions of calcium treatment of CrMo sulfur-containing square tube are analyzed, and the sulfur-containing gear rolled products after calcium treatment are sampled and studied. The conclusions are as follows: in order to minimize the generation of Cao in sulfur-containing square tube steel, Omega in molten steel; (O) It must be taken off to & times; The rate of calcium can only be guaranteed below -.The reason why the surface of fake and shoddy materials is easy to crack is that its blank is adobe with many air holes. During the cooling process, the adobe has cracks due to the action of thermal stress, and there are cracks after rolling.supply,Hardness hardness is a pointer to measure the hardness and softness of metal materials. At present, the hardness method is commonly used to measure the hardness in production. It uses the indenter with fixed geometry to measure the hardness value of the metal material surface tested under fixed load according to the degree of hardness.Precision pipe is a seamless pipe with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. The selection of precision seamless mechanical structure or hydraulic equipment can greatly save machining hours, improve material rate and improve product quality. Seamless pipe can be divided into hot rolled pipe and cold rolled pipe according to different productionSo flat, and the size and thickness are not standardized, it can reflect that this square tube is a poor product& rdquo;

Hundreds of degrees Celsius, which can save energy.For more, please check,With the progress of the times and the faster and faster economic development, the places where large-diameter seamless square tubes are used are becoming more and more popularAll seamless qb square tubes shall be tested for mechanical properties. Mechanical property tests are mainly divided into two categories: tensile test and hardness test.B. low alloy structural steel C. ordinary structural steel and high-quality steel for specific purposes (including high-quality steel)Westero,Stage ( & mdash; )Square pipe is the name of square pipe, that is, and the ability of metal under impact load is called impact toughness.