The Horizontal Cylindrical insulated Rail Milk tanker of 40,000 ltrs. capacity is suitable for long distance transportation of chilled milk at 4^o Celcious by railways on broad gauge line. The inside barrel is made of stainless steel and allows carrying of dairy milk without any contamination. The outside barrel is jacketted on the insulation work and cage structure over the inner barrel, thereby making the tanker safe for carrying chilled milk at high speed. The Rail Milk Tank wagons are fitted with suitable bogie to run on high speed attached to Mail/Express trains. The wagons are fitted with vacuum brake and side buffers and a screw coupling system.