Penetration testing technology is only suitable for detecting surface defects. It uses penetrant to apply on the surface of the SA 36 astm carbon steel welded pipe steel plate, then wipes the excess penetrant with the cleaning solution, and then smears the developer. The penetrant remaining in the defect is adsorbed by the developing material, so as to observe the shape of the defect and determine the type of defect. This SA 36 astm carbon steel welded pipe method requires multiple wipes before and after the inspection, the process is more cumbersome, and can not detect internal defects and rough and dirty steel plates.
The difference between q345 and q235 steel SA 36 astm carbon steel welded pipeThe lower limit of yield strength of Q345 is 345MPa (the actual meaning of Q is the Chinese character "qu", and the standard value behind means the lower limit of yield strength). Q235 steel is used for metal structural parts, nitrided or cyanidized parts with low core compressive strength requirements, support rods, crankshafts, crane hooks, couplers, bolts and nuts, sleeve specifications, shafts and weldments.
Application of medium and thick plates: Medium and thick plates are used for construction engineering, machinery manufacturing, shipbuilding, bridge construction, etc. Medium and thick plates SA 36 astm carbon steel welded pipe can also be used to manufacture various containers, furnace shells, furnace plates, some parts of tractors and welding components. Medium and thick plates are usually in form of bridges and automobile static steel plates, low alloy steel plates, shipbuilding steel plates, boiler steel plates, pressure vessel steel plates, checkered steel plates, automobile girder steel plates, etc.
On Nov. 1st, 2019, BBN SA 36 astm carbon steel welded pipe steel organized Delegation to visit Zhengzhou Children Welfare Institute, and to give sponsorship as well as concerns to the Children. The handicapped children is always a pain topic. With the development of the society, they also gets increasing concerns and help from all walks of life. Thankfully, our Government also gives high concern to the handicapped children and has built SA 36 astm carbon steel welded pipe Children Welfare Institutes all over the country to guarantee their lives.