Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company has seven business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory areas 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 people, including 247 engineers and technicians and 82 middle-level technicians. Recognized as a "High-tech Enterprise" by the Science and Technology Department in December 2016, it was named a "Shandong Specialized and New Enterprise" by the Industry and Information Technology Department in June 2021, a "Shandong羚羊企业" in June 2022, and a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology in August 2022.
When selecting welding materials for pressure vessels, several factors should be considered:
Material Matching: The selection of welding materials should match the base material of the pressure vessel to ensure the strength and corrosion resistance of the weld joint. Common material matches include carbon steel welding materials with carbon steel base materials, stainless steel welding materials with stainless steel base materials, etc.
Strength Requirement: Select welding materials with sufficient strength based on the design requirements and working conditions of the pressure vessel. The strength of the welding materials should match the base material to ensure that the strength of the weld joint does not become a weakness of the vessel.
Corrosion Resistance: Select welding materials with excellent corrosion resistance based on the working environment and medium of the pressure vessel. For instance, pressure vessels operating in corrosive media may require the use of stainless steel welding materials with superior corrosion resistance.
Welding Performance: The selection of welding materials should consider their welding performance, including penetration depth, weld bead shape, and crack resistance. The choice of welding materials should meet the requirements of the welding process and ensure the quality of the weld joints.
Related Standards and Regulations: When selecting welding materials, refer to relevant standards and regulations such as the ASME Boiler and Pressure Vessel Code, AWS (American Welding Society) standards, etc. These standards and regulations provide guidance and requirements for the selection of welding materials.
It's important to note that the selection of welding materials should be made by a welding engineer or a qualified welder. They can choose the appropriate materials based on specific application requirements, working conditions, and safety standards, in conjunction with relevant regulations and specifications. Additionally, manufacturers and suppliers often provide recommendations and technical support for welding material selection.

Proper management regulations for the use of low-temperature liquid storage tanks include 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 stability and safety.
Safety Operating Procedures: Establish and implement safety operating procedures for liquid storage tanks, including start-up, shutdown, filling, venting, and other operational steps. Operators should receive training to understand the characteristics of liquid storage tanks, safety precautions, and emergency response measures.
Safety Equipment and Protection 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 suits, etc., to ensure their safety.
Regular inspections and maintenance: Regularly inspect and maintain low-temperature liquid storage tanks, including checking the tank's appearance, seal integrity, and corrosion protection measures. If any issues are found, they should be promptly repaired or the tank replaced to ensure proper operation and safety.
Waste Management: Abandoned low-temperature liquid storage tanks should be disposed of in accordance with relevant environmental protection regulations. Residual liquids in废弃 storage tanks should be handled properly to avoid environmental pollution.
Tank Record and Tracking: Establish a tank usage record, including filling dates, quantities, and usage status. Additionally, it is recommended to set up a tank tracking system for monitoring and managing the usage and maintenance of tanks.
Here are some common management regulations for low-temperature liquid storage tanks, with specific regulations potentially varying by industry and region. When using low-temperature liquid storage tanks, comply with relevant laws and standards and establish appropriate management measures based on the actual situation.

Liquid Argon Storage Tanks are specialized equipment designed for storing liquid argon, featuring the following parameters, functions, and characteristics:
Parameters:
Tank Capacity: The capacity of liquid argon tanks can be customized to meet requirements, typically available in various sizes such as 500L, 1000L, 2000L, and so on.
Working Pressure: The working pressure of liquid argon tanks is typically atmospheric or slightly above atmospheric pressure.
Storage Temperature: The storage temperature for liquid argon tanks is typically -196 degrees Celsius, which is the boiling point of argon, maintaining its liquid state.
Function:
Liquid Argon Storage: Liquid argon tanks are primarily used for storing liquid argon, maintaining its liquid state at low temperatures for supply and usage.
Insulation and Heat Retention: The liquid argon storage tank employs specialized insulation materials and structural design to minimize heat conduction and retention, maintaining the low temperature state of liquid argon.
Safety Control: The liquid argon storage tank is equipped with safety devices such as pressure relief valves and level alarms to ensure safe operation and use.
Features:
High Purity Supply: Liquid argon tanks offer high purity liquid argon supply to meet the requirements of applications such as cryogenic storage, gas shielded welding, and semiconductor manufacturing.
Long-term Storage: Liquid argon tanks are designed for long-term storage of liquid argon, extending their service life. By controlling the tank's internal temperature and the performance of the insulation layer, the evaporation and oxidation of liquid argon are slowed down.
Multi-domain Applications: Liquid argon storage tanks are widely used in industries such as industrial, scientific research, and include applications like refrigeration and semiconductor manufacturing.
Environmental Protection and Energy Saving: Liquid argon storage tanks effectively store and utilize liquid argon, reducing energy waste and environmental pollution.
In summary, liquid argon tanks are designed for storing liquid argon, thermal insulation, and safety.

To extend the service life of liquid argon storage tanks, the following measures can be taken:
Regular inspections and maintenance: Conduct regular visual inspections of the liquid argon tank, check valves and fittings, and perform leak detection and pressure tests, etc. Identify and repair potential issues promptly to ensure the normal operation of the tank.
Maintain Insulation: Insulation is crucial for the thermal preservation of liquid argon tanks. Regularly inspect the integrity and insulating properties of the insulation, repair or replace damaged insulation materials to ensure the tank's insulating effectiveness.
Regulate Liquid Argon Temperature: Maintain the liquid argon within an appropriate temperature range to prevent damage to the storage tank from excessive or low temperatures. Employ suitable cooling or heating measures to ensure stable liquid argon temperatures.
Corrosion Protection: The outer shell and internal structure of the liquid argon tank should be protected against corrosion and oxidation. Regular inspections and maintenance of the protective coating are required to ensure its integrity.
Avoid excessive pressure and overfilling: Prevent the internal pressure of the tank from being too high or too low, as well as overfilling with liquid argon. Excessive pressure and overfilling can lead to structural rupture or damage to the tank.
Regular Cleaning and Draining: Perform regular cleaning of the tank interior to remove accumulated impurities and dirt. Regularly drain to prevent杂质 and sediments in liquid argon from damaging the tank.
Safe Operation and Training: Ensure operators are proficient in the safe operation of liquid argon tanks. Enhance safety training to boost operators' awareness and emergency response capabilities.
Manage records and documents: Establish comprehensive management records and documents, including the usage of tanks, inspection records, and maintenance records. Regularly review and update management records to ensure safe management and maintenance of the tanks.
These measures can help extend the service life of liquid argon storage tanks, but specific operations and management should be tailored to the type and application of the tank. When conducting maintenance and operation, follow relevant specifications and standards, and consult with experts to ensure safety and effectiveness.
Our company attaches great importance to technological innovation and R&D design. We possess one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We have over 600 units of various 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. The key products we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been included in multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong key projects, and Heze City innovation and excellence projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Li Yajiang of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire feeding argon arc welding (PAW-GTAW) technique. This technology has been appraised as reaching international standards in the field of deep cryogenic container manufacturing at the provincial level. Choose Zhongjie Special Equipment, and let's create brilliance together!