{"id":30078,"date":"2026-02-15T09:14:14","date_gmt":"2026-02-15T05:44:14","guid":{"rendered":"https:\/\/orinmakhzan.ir\/what-is-isotank\/"},"modified":"2026-01-04T16:43:18","modified_gmt":"2026-01-04T13:13:18","slug":"what-is-isotank","status":"publish","type":"post","link":"https:\/\/orinmakhzan.ir\/en\/what-is-isotank\/","title":{"rendered":"What Is an Isotank? A Comprehensive Guide to Isotanks and Standards"},"content":{"rendered":"\t\t
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An isotank, or ISO Tank Container, is one of the most widely used pieces of equipment for transporting liquid cargo worldwide. When international transportation of liquid goods required standardization, the first models of ISO tanks were introduced in Europe in the 1960s. Prior to that, bulk liquids were mainly transported using road tankers or small drums, which were both costly and high\u2011risk methods.<\/p>

With the approval of key standards by the International Organization for Standardization (ISO) in particular ISO 668, which has served as the reference for container dimensions since 1979, and ISO 1496\/3 (technical specifications for tank containers) the legal and technical foundation of this industry was established.<\/p>

In Iran, starting from the 2010s (1390s SH), with the development of the South Pars phases and the significant growth in exports of petrochemical products especially methanol, urea, acids, and industrial oils isotanks became a vital and indispensable option for land (cross border) and maritime (export) transportation. In this article, all technical, commercial, and safety aspects of isotanks are examined.<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1. Classification of Isotank Types Based on Legal Transport Regulations<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n row <\/th>\n \n Tank Code <\/th>\n \n Type or application <\/th>\n \n Technical description <\/th>\n <\/tr>\n
\n 1 <\/td>\n \n T1 <\/td>\n \n For transporting light liquids such as water, syrups, and cleaning solutions <\/td>\n \n The lowest-pressure model, design pressure typically 1.75 bar <\/td>\n <\/tr>\n
\n 2 <\/td>\n \n T4 <\/td>\n \n For transporting non-hazardous oils <\/td>\n \n Top manhole and bottom discharge valve; working pressure approximately 2.65 bar <\/td>\n <\/tr>\n
\n 3 <\/td>\n \n T11 <\/td>\n \n For transporting non-hazardous chemical materials <\/td>\n \n The most commonly used model in general industries; design pressure of approximately 4 bar <\/td>\n <\/tr>\n
\n 4 <\/td>\n \n T12 <\/td>\n \n For non-corrosive materials with high temperature fluctuations <\/td>\n \n Similar to T11 but with steam injection capability or an internal heating system <\/td>\n <\/tr>\n
\n 5 <\/td>\n \n T14 <\/td>\n \n For transporting hazardous chemical materials <\/td>\n \n With a working pressure of approximately 6.6 bar and a reinforced shell (316L or 316Ti) <\/td>\n <\/tr>\n
\n 6 <\/td>\n \n T20 <\/td>\n \n For transporting liquefied gases with medium pressure <\/td>\n \n Design pressure of approximately 8.4 to 10 bar <\/td>\n <\/tr>\n
\n 7 <\/td>\n \n T22 <\/td>\n \n For transporting corrosive materials and substances more hazardous than T14 (such as acids) <\/td>\n \n Thicker shell walls, multi-stage safety relief valves <\/td>\n <\/tr>\n
\n 8 <\/td>\n \n T23 <\/td>\n \n For extremely hazardous materials (such as nitric acid and formaldehyde) <\/td>\n \n Design pressure higher than 10 bar <\/td>\n <\/tr>\n
\n 9 <\/td>\n \n T50 <\/td>\n \n For transporting various fuels, LPG, and compressed gases <\/td>\n \n Design pressure is typically 17 to 21 bar (with a fully steel shell) <\/td>\n <\/tr>\n
\n 10 <\/td>\n \n T75 <\/td>\n \n For liquefied gases at cryogenic temperatures (Cryogenic Tanks) such as oxygen, nitrogen, and LNG <\/td>\n \n Featuring vacuum insulation with an operating temperature down to minus 196\u00b0C <\/td>\n <\/tr>\n
\n 11 <\/td>\n \n T100 <\/td>\n \n For special projects, military applications, or aerospace industries <\/td>\n \n Custom-designed for pressures above 40 bar or special temperature conditions <\/td>\n <\/tr>\n <\/table>\n<\/div>