The Rupture Cause Analysis of Economizer Pipe Coil Bend With 20G;

Cause of 20g Disqualification Analysis by None-destructive Test;

Round steel production with bloom for 20G high-pressure boiler tube;

Using flow sand jet experimental machine, the erosion wear performance of 20g steel was studied.

By deep welding test of 20G steel and 20Cr2Ni4A steel using laser, right performance and aspect is gained at welding zone for the welding of dissimilar steels, which is qualified by both theory analysis and field testing.

It has become a normal practice to estimate coker drum's service life by the extent of spheroidization of 20g steel in delayed coker operating at high temperatures.

20G tube blank steel is produced by the 100t UHP-EAF in NISCO, which can meet demand of market through a lot of measures such as refining raw material, standardizing deoxidization technique, optimizing argon-bubbling treatment, selecting the best water distribution model in second-cooling zone, adopting low overheating degree casting, controlling drawing speed and rolling temperature and so on.