How To Solve The Rusting Of Double-sided SSAW Steel Pipe

If the double-sided ssaw steel pipe is rusted, the steel surface is mainly polished using tools such as a wire brush. The cleaning and preheating of the spiral pipe can remove the loosened or tilted oxide scale, rust, and welding slag. The manual tool derusting can reach Sa2 level, and the derusting of power tools can reach Sa3 level. If the surface of the spiral pipe is affixed with a solid iron oxide scale, the rust removal effect of the tool is not ideal, and the depth of the anchoring lines required for anti-corrosion construction cannot be achieved.

Based on the traditional applications, new applications have been added. This has made ssaw steel pipe more useful and also reduces the use of spiral steel pipes. The radio frequency sensor provides 200 volt, 50 ampere flow through a spiral steel tube, heating the experimental sample by induction.

The coil itself does not get hot, but the experimental sample will have a significant fever. When the heating temperature exceeds the arc melting machine, the radio frequency sensor will provide more control, allowing scientists to adjust the specific composition of the alloy. Spiral steel pipe with strong pressure bearing capacity, good plasticity, easy for welding and processing and molding; general low pressure fluid conveying spiral submerged arc welding spiral steel pipe (SY5037-83), using double-sided automatic submerged arc welding or single-sided welding method Water, gas, air, steam, etc.

Q235B lsaw steel pipe material chemical analysis results.The trend of spiral steel pipe market demand not only rapid but also undisturbed will not change fundamentally. Whether the spiral steel pipe market can maintain the hub of rapid development depends on changes in demand. Macroeconomics are regulated by the policy level, and will bring about a certain slowdown in the market growth rate in the future.

The main raw material is hot metal plus scrap steel. The content of sulfur and phosphorus in the steel is higher than that of high-quality carbon structural steel. Generally, the sulfur is?0.050% and the phosphorus is?0.045%. The content of other alloying elements brought into the steel by raw materials, such as chromium, nickel, and copper, generally does not exceed 0.30%. According to the composition and performance requirements, the grades of such steels are Q195, Q215A, B, Q235A, B, C, and D. Q255A, B, Q275 and other steel grades.

Note: "Q" is the Chinese Pinyin capitalized initial of the yielding "Qu", and the subsequent number is the value of the minimum yield point (?s) of this grade. The following symbol is based on the content of the impurity elements (S, P) of the steel. From high to low and with changes in carbon and manganese elements, they are divided into A, B, C, and D.

According to the metallurgical quality, the carbon structural steel Q235 in GB700-88 standard is divided into four grades A, B, C, and D. The grade of steel grades in each grade is 0.3%. The difference lies in the content of carbon and sulfur and phosphorus. different. The carbon content of AB grade is 0.14%~0.22% and 0.12%~0.20%, the carbon content of CD grade is?0.18%,?0.17%, the content of Mn in A grade is the smallest, and the content of D grade SP is the smallest.

A worker from a steel pipe company, which is located in China.