Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boiler, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total area of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 staff, including 247 engineers and technicians, and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-Tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Proper management regulations for low-temperature liquid storage tanks encompass the following aspects:
Tank Selection and Installation: Choose a suitable low-temperature liquid storage tank and ensure it complies with relevant standards and regulations. The installation of the tank should be carried out by personnel and operated according to the manufacturer's instructions and requirements to ensure the tank's stability and safety.
Safety Operating Procedures: Establish and implement safety operating procedures for liquid storage tanks, including startup, shutdown, filling, venting, and other operational steps. Operators must receive training to understand the characteristics of liquid storage tanks, safety precautions, and emergency response measures.
Safety Equipment and Protective Measures: Tanks should be equipped with necessary safety devices, such as pressure sensors, safety valves, leak detectors, etc., to monitor and control the pressure and temperature of the tank. At the same time, operators should wear appropriate personal protective equipment, such as insulated gloves, protective clothing, etc., to ensure their own safety.
Regular Inspections and Maintenance: Conduct regular inspections and maintenance on low-temperature liquid storage tanks, including checking the tank's appearance, sealing, and corrosion prevention measures. In case of any issues, promptly repair or replace the tank to ensure its proper operation and safety.
Waste Management: Abandoned low-temperature liquid storage tanks should be disposed of in accordance with relevant environmental protection regulations. The residual liquids in the abandoned tanks should be handled properly to prevent environmental pollution.
Storage Tank Records and Tracking: Establish records of tank usage, including filling dates, quantities, and usage status. Additionally, it is recommended to implement a tank tracking system for monitoring and managing the usage and maintenance of the tanks.
Above are some common management regulations for low-temperature liquid storage tanks. Specific regulations may vary by industry and region. When using low-temperature liquid storage tanks, comply with relevant laws and standards, and establish suitable management measures based on the actual situation.

In pressure vessel design, several common "thickness" parameters must be considered:
Wall Thickness: The wall thickness refers to the actual thickness of the pressure vessel's wall. The selection of wall thickness must consider factors such as the design pressure of the container, the strength of the material, and its corrosion resistance to ensure the strength and safety of the container.
Bend Allowance: The bend allowance refers to the additional thickness added to the wall thickness during the manufacturing process to ensure the strength and shape of the container's bending section. The calculation and selection of the bend allowance must consider factors such as the container's bending radius and the material's bendability.
Corrosion Allowance: The corrosion allowance refers to the additional thickness added to the wall to combat internal or external corrosion of the container. The selection of the corrosion allowance must consider the working environment of the container and the corrosive properties of the medium to ensure the container can withstand the effects of corrosion throughout its service life.
These "thickness" parameters play a crucial role in pressure vessel design, affecting the vessel's strength, corrosion resistance, and safety. During the design process, it is necessary to select and calculate these thickness parameters reasonably, based on relevant standards and specifications, in conjunction with the vessel's usage conditions and requirements, to ensure the design and manufacturing meet the standards.

Liquid Oxygen Low-Temperature Storage Tanks are primarily used for storing and supplying liquid oxygen, with their application methods varying according to specific needs and scenarios. Here are some common applications of liquid oxygen low-temperature storage tanks:
Applications: Liquid Oxygen Low-Temperature Storage Tanks are widely used in the field for cryogenic preservation of biological samples, cells, tissues, and vaccines. Institutions such as biopharmaceutical research organizations and biobanks utilize these tanks to store and protect these biological materials.
Experimental Research: Liquid Oxygen Low-Temperature Storage Tanks are used in scientific research and laboratories to provide low-temperature environments for cryogenic preservation and experiments. These storage tanks play a crucial role in experimental research across various fields such as physics, chemistry, biology, and materials science.
Industrial Applications: Liquid Oxygen Low-Temperature Storage Tanks are used in industrial fields for providing low-temperature cooling in processes such as metal processing, welding, and heat treatment. These tanks can provide low temperatures, enabling metals to achieve the required hardness and toughness during processing.
Food Industry: Liquid Oxygen Low-Temperature Storage Tanks are used in the food industry for freezing and refrigerating foods such as frozen meats, fruits, and seafood. The low temperature of liquid oxygen can quickly freeze foods, preserving their freshness and quality.
Liquid Oxygen Low-Temperature Storage Tanks are used in the field for storing and supplying liquid oxygen as fuel. Liquid oxygen, as a high-energy fuel, is widely used in the propulsion systems of engines and vessels.
During the operation of liquid oxygen low-temperature storage tanks, strict adherence to relevant safety regulations and operational guidelines is required to ensure the safe operation and use of the tanks. Liquid oxygen is highly flammable, so fire prevention measures must be taken when using liquid oxygen low-temperature storage tanks, and it must be ensured that there are no sources of fire nearby.

The operational and protective procedures for the use of low-temperature liquid nitrogen storage tanks should include the following:
Staff Training: All operators must undergo safety training for liquid nitrogen storage tanks, understanding the properties, hazards, and proper operation methods as well as emergency response measures.
Protective Gear: Operators must wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes, to safeguard themselves against the low temperatures of liquid nitrogen and other hazards.
Ventilation Requirements: Ensure adequate ventilation in the operational area of the liquid nitrogen storage tank to expel gases produced by the evaporation of liquid nitrogen. Avoid excessive oxygen concentration to minimize the risk of fire and explosion.
Leak Control: Tanks must be equipped with leak detection and alarm systems to promptly identify and control the leakage of liquid nitrogen. Upon detection of a leak, immediate action should be taken to control the source of the leak and to carry out repairs.
Fire Prevention Measures: Nitrogen liquid has a low boiling and freezing point, which is prone to fire. To prevent and contain fires, firewalls and fire-resistant coatings are installed around nitrogen liquid storage tanks.
Electrostatic Protection: Electrostatic buildup in liquid nitrogen tanks can cause sparks, increasing the risk of fire. Measures such as using electrostatic conductive materials and anti-static equipment should be taken to reduce the accumulation and release of static electricity.
Regular inspections and maintenance: Conduct regular checks on the condition of liquid nitrogen tanks and related equipment, including valves, pipelines, pressure gauges, etc. Ensure the equipment is in perfect condition and promptly repair or replace any damaged parts.
Waste Gas Treatment: Liquid nitrogen tanks produce waste gas during operation, which requires appropriate waste gas treatment measures to prevent potential harm to the environment and human health.
Emergency Response Plan: Develop an emergency response plan for liquid nitrogen storage tanks, including procedures for handling leaks, emergency rescue measures, and protocols for notifying relevant departments. Operators
Our company places great emphasis on technological innovation and R&D design. We have 1 municipal-level enterprise technology center in Heze City, equipped with non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We have over 600 types of equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. Our key products and technologies, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Li Yajiang of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology. After the provincial-level scientific and technological achievement evaluation, the technology level has reached the international level in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!