2009SH/T 3524-2009 Technical specification of site assembling and welding for petrochemical static equipment
1999SH 3524-1999 Construction technique standard of site assembling and welding for steel tower and vessel in petrochemical industry
SH 3524-1999 Construction technique standard of site assembling and welding for steel tower and vessel in petrochemical industry was changed to SH/T 3524-2009 Technical specification of site assembling and welding for petrochemical static equipment.