20110084080 | CHEMICAL STORAGE TANK - A chemical storage tank includes at least a main body and two sealing members combined together with each other, integrally made of acid-proof and alkali-proof materials, with a storage space formed inside it for storing any chemical material or product, and with a circumferential wall having its upper and its lower end respectively formed with a connecting opening. The sealing members are integrally made of the same plastic material of the main body, respectively combined together with the upper and the lower connecting opening of the main body by Electronics high frequency welding or heater welding. Thus, the welding portions between the main body and the sealing members are located around the circumferential wall, able to prevent pressure in the tank from damaging the chemical storage tank to insure safety. | 04-14-2011 |