Do you want any logistics service, then call us: +86-371-86151827
Penetration testing technology is only suitable for detecting surface defects. It uses penetrant to apply on the surface of the Q355NH Q500NH Q550NH steel coil 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 Q355NH Q500NH Q550NH steel coil 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.
ASTM A 242 GR. 1 steel plate, Q355NH Q500NH Q550NH steel coil, A 242 GR. 1 steel plate, under ASTM standard, we can regard A 242 GR. 1 steel plate as Steel Resistant to Atmospherical Corrosion A 242 GR. 1 steel plate is one mainly of Steel Resistant to Atmospherical Corrosion, A 242 GR. 1 steel grade is a hot rolled products of structural steels in technical delivery conditions with improved atmospheric corrosion resistance.
We are the professional Chinese steel plate, steel pipe supplier. If you need any steel plate, steel pipe, we can put the steel plate, steel pipe order to our steel mill directly or collect these goods from our stock directly if we have enough ex-stock. Besides. if you need any Q355NH Q500NH Q550NH steel coil offer or if you want to know the price and any other information about steel plate, steel pipe price, please be free to contact us.