... quanlity: the first grade Inspection:With hydraulic testing,
eddy current and infrared test Product NameMaterialStandard Specification Application Alloy steel ... 1-200apply to oil, chemical, electric, boiler industry
for high and low temperature, corrosion condition Stainless steel ... -20068-630*1-60Apply to oil refinery furnace
tube and heat exchangermiddle pressure boiler tube10#20#16Mn