Your Professional Pressure Vessel Supplier
 

Zoiun Fluid & Gas Equipment Co., Ltd. was founded in 2016, a high-tech company specialized in designing and manufacturing heat exchanger for the storage, transport, pressurization, and vaporization of cryo liquids and gases. Our core products include various types of cryogenic pumps and vaporizers, as well as pressure vessels such as cryogenic liquid cylinders, cryogenic tanks and micro-bulk tanks.

 

 
  • Cryogenic Dewar

    Cryogenic Dewar

    Zoiun Fluid & Gas Equipment is a pressure vessel manufacturer specializing in ambient vaporizers
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  • Seamless Steel Oxygen Cylinder

    Seamless Steel Oxygen Cylinder

    40Liter 150bar seamless steel oxygen cylinders are a safe and reliable way to store and transport
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  • Stainless Steel LN2 Dewar

    Stainless Steel LN2 Dewar

    Clink on Zoiun Fluid & Gas Equipment, let get to know something about Stainless Steel LN2 Dewar,
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Why Choose Us

Strict Quality Control

We implement a multi-level quality management system, meticulously overseeing every step from raw material procurement to the production process, ensuring that every piece of equipment meets the highest standards.

Global Sales

Our products are highly popular and are sold to many countries and regions worldwide. We also provide one-stop equipment solutions, which do not require on-site construction and reduce time costs.

Get Discount on Bulk Orders

We also provide further discounts for large quantity orders. In the event that you cannot find the cryogenic equipment you need on our website, we are more than happy to source promotional pricing through our sister companies to ensure that your needs are met.

Custom Services

Our products are highly flexible and can be custom-made to meet specific customer requirements. This allows us to continuously update and expand our product line, ensuring we can meet a wide range of needs and provide tailored solutions for our clients.

 

Types of Pressure Vessel

The Pressure Vessel Produced by Our Company Mainly Include the Following Types:

 
 

Cryogenic Dewar

A cryogenic dewar is a highly insulated vessel for storing, transporting, and applying cryogenic liquids at extremely low temperatures.

 
 
 

Seamless Steel Oxygen Cylinder

Seamless steel oxygen cylinders are a safe and reliable way to store and transport oxygen gas. The cylinders are also tested and certified to meet international safety standards.

 
 
 

Stainless Steel LN2 Dewar

The Stainless Steel LN2 Dewar is a high-performance container designed specifically for the storage of liquid nitrogen (often abbreviated as LN2).

 

 

Cryogenic Dewar Specification

 

Model

175L Cryogenic Dewar

Nominal Capacity

175L

Usable Capacity

164L

Pressure

2.3MPA

Net Weight

131KG

Dimensions

510*1540MM

Liquid Level Gauge

Float

Surface Treatment

Polish

 

Material of Cryogenic Dewar

 

 

Cryogenic dewars come in a variety of shapes and sizes, and also from a variety of materials. The exterior of a Dewar is typically made of stainless steel, and the interior is made of stainless steel or aluminum for strength and corrosion resistance. Between the inner and outer walls, a high vacuum layer is maintained, often combined with multi-layer insulation made of reflective materials like aluminized Mylar, to minimize heat transfer.

 

Advantages of Cryogenic Dewar
 

Efficiency

Cryogenic dewar are designed for ease of use, with features like self-pressurization and portability to ensure consistent performance.

Cost-effectiveness

Their insulation properties reduce evaporation losses, maximizing the usage of stored cryogenic liquids.

Safety

Modern designs prioritize safety with built-in pressure-relief valves, ensuring that operators can use them without risk.

Versatility

Cryogenic dewars cater to a wide range of industries, making them a flexible solution for diverse applications.

 

 
 
Application of Cryogenic Dewar
01.

Medicals

Preserving biological samples, powering cryotherapy treatments, and even storing organs for transplantation.

02.

Industrial Gases

Safely storing and transporting liquefied gases like oxygen, nitrogen, and argon for various industrial processes like metal cutting and food freezing.

03.

Space Exploration

Fueling rockets and spacecraft, and keeping astronaut life support systems operational.

04.

Scientific Research

Conducting experiments at extreme temperatures, studying material properties under cryogenic conditions, and facilitating microscopy of tiny structures.

 

Cryogenic Dewar
Cryogenic Dewar Safety and Handling Advices

Containers must always be stored in a well-ventilated area.


Information and caution labels must be installed in order to inform users of potential hazards.


Technicians must wear the recommended PPE at all times when handling and filling the container, in order to minimize risks.


Valve connections must be installed specifically to meet the needs for this sort of system.


Adaptors are not to be used.


The area should be a non-smoking one.


The installation of O2 monitors is recommended.


Valves must be opened slowly.

 

Seamless Steel Oxygen Cylinder Specification

 

40Liter 150bar seamless steel oxygen cylinders

Material

37Mn

Water Capacity

40L

Working Pressure

150BAR

Cylinder Height

1305mm

Empty Weight

47.8Kg

Wall Thickness

6.1mm

Outside Diameter

219mm

Head Protection

Tulip Cap, Common Cap.

 

Advantages of Seamless Steel Oxygen Cylinder

High strength: Due to the use of seamless steel pipe material for manufacturing, seamless steel oxygen cylinders have very high strength and load-bearing capacity.

 

Strong corrosion resistance: The surface of seamless steel oxygen cylinders has undergone special treatment and has good corrosion resistance.

Good sealing performance

Seamless steel Oxygen cylinders have few joints or even no welds, so they have good sealing performance.

Lightweight and compact

Compared to oxygen cylinders made of other materials, seamless steel Oxygen cylinders have the characteristics of being lighter and more compact.

Good high-temperature resistance

Seamless steel oxygen cylinders can work normally at high temperatures without deformation or material failure. This allows it to safely transport and store gases under some high-temperature conditions.

 

Seamless Steel Oxygen Cylinder

 

Application of Seamless Steel Oxygen Cylinder

Healthcare: Used for storing medical oxygen, where reliability and purity are critical. Seamless steel oxygen cylinders ensure consistent performance and reduce contamination risks.

 

Industrial Manufacturing: Employed in welding, cutting, and inert gas shielding processes requiring high-pressure gas delivery with minimal maintenance.

 

Aquaculture: Provides oxygen to fish farms and wastewater treatment systems to enhance oxygen levels and promote healthy biological activity.

 

Culinary & Food Preservation: The food and beverage industry relies heavily on seamless steel oxygen cylinders for preservation, packaging, and beverage carbonation.

 

Chemical and Petrochemical Industry: Supplies oxygen for oxidation reactions, chemical synthesis, and refining processes that require controlled oxygen environments.

 

Seamless Steel Oxygen Cylinder Manufacturing Process
 

Raw Material Selection
The construction of a seamless steel oxygen cylinder starts with selecting high-quality steel. The steel must meet strict requirements for strength, flexibility, and resistance to corrosion.

 

Piercing and Extrusion Process
The manufacturing process for seamless steel oxygen cylinders begins with a solid billet of steel, which is heated to a malleable state. The billet is then pierced to create a hollow tube. This piercing step is followed by extrusion, where the hollow tube is elongated into the desired shape of the cylinder.

 

Rotary Forging and Stretching
Once the hollow tube is formed, it undergoes rotary forging. This process involves rotating the tube while applying pressure to stretch it to the correct diameter and wall thickness.

 

Heat Treatment and Annealing
The oxygen cylinder then undergoes heat treatment, specifically annealing, which involves heating the steel to a high temperature and then cooling it gradually. This process enhances the material’s strength, ductility, and resistance to fatigue.

 

Surface Finishing and Coating
After the seamless steel oxygen cylinder is formed and heat-treated, it is carefully inspected for quality and surface imperfections. The seamless steel oxygen cylinder may then undergo various finishing processes such as shot blasting, polishing, or sandblasting to smooth out the exterior.

 

Testing and Quality Assurance

 

Before the seamless steel oxygen cylinders are put into service, they undergo rigorous testing to ensure they can safely handle the pressures they will be subjected to. Common tests include:

Hydrostatic Pressure Testing

The oxygen cylinder is filled with water and pressurized to check for leaks and structural weaknesses.

Pneumatic Testing

The oxygen cylinder is pressurized with air and examined for any signs of leakage.

Non-Destructive Testing (NDT)

Techniques such as ultrasonic or X-ray testing are used to detect any internal cracks or faults.

 

How to Place an Order
 

You can place your order directly by phone at +44 75487 21135 or contact us by email at contact@zoiun.com.

Our technicians will quote according to your needs.

After everything is confirmed, we will sign a contract with you to confirm your approval of the product requirements and quality and your payment of the deposit.

After confirming and receiving the 30% advance payment, we will start mass production.

Our technicians will control the quality during the production process.

According to the delivery time, we will arrange shipment after receiving the remaining payment.

 

Packing & Delivery

 

Lead Time

Equipment production normally takes 10-20 days depending on available inventory.

Packaging

Vaporizers are transported in wooden crates, which serve as protective packaging during shipment, especially in cases where multiple manufacturers' products are consolidated in a single container for Less than Container Load (LCL) shipments.

Payment Terms

30% deposit in advance, 70% balance against the copy of B/L. T/T, Trade Assurance, Paypal, Western Union, Credit Card, L/C etc.

Warranty

18 Month

 

FAQ

 

Q: What if I need to revise the product design or specification?

A: If you need to revise the product design or specification of cryogenic equipment, please let us know as soon as possible. We will work with you to understand the changes you require and provide a new design or specification that meets the need. Please keep in mind that depending on the extent of the revisions may impact the delivery timeline or pricing of the product.

Q: Do you have any discounts?

A: "At Zoiun, we offer highly competitive pricing on a wide variety of solutions for cryogenic applications. We also provide further discounts for large quantity orders. In the event that you cannot find the cryogenic equipment you need on our website, we are more than happy to source promotional pricing through our sister companies to ensure that your needs are met."

Q: What if I wanna cancel the order?

A: If you need to cancel an order, please inform us as soon as possible. It's important to note that our production process begins immediately after we receive the deposit in our bank account. We have a buffer period of 1 or 2 days for returning the payment, which normally takes 1 or 2 days to get into our bank account. However, once the production has started, cancellation may not be possible and may result in cancellation fees or forfeiture of the deposit.
We understand that unexpected circumstances may arise, and we will work with you to find the best solution. If you need to cancel your order, please contact us as soon as possible and provide the reason for cancellation. We will do our best to accommodate your needs while minimizing any impact on production timelines or costs.

Q: What are the key safety features to look for in seamless steel oxygen cylinders?

A: Safety features in 40l 150bar seamless steel oxygen cylinder include pressure relief devices for over-pressure prevention and robust valve protection against accidental damage. The cylinders should also have clear labeling regarding the gas and safety advice. Routine inspection and certification are essential for ensuring that any given cylinder is safe.

Q: How can I determine the correct size and capacity for my seamless steel oxygen cylinder needs?

A: Choosing the correct size and capacity 40l 150bar seamless steel oxygen cylinder entails determining the gas volume required for the specific application and the frequency of use. Therefore, considerations for space restrictions and portability requirements would play a part in this decision. Speaking to suppliers or industry specialists would provide something of substance in finding and choosing the optimal-sized cylinder for the application.

Q: What maintenance practices are necessary for seamless steel oxygen cylinders?

A: Maintenance of 40l 150bar seamless steel oxygen cylinder mainly involves visual check-ups for wear and tear, functionality tests of the valves, and pressure testing to determine integrity. Cleaning the cylinder and its components prevents contamination, while proper storage conditions maintain efficiency.

Q: Can seamless steel oxygen cylinders be used for multiple gases?

A: Some 40l 150bar seamless steel oxygen cylinder developed can be used with more than one gas, but one has to check compatibility for each type of gas to prevent contamination or reactions. The cylinder and fittings should also be compatible with the considered gases. Ideally, one should go through the manufacturer's specifications and instructions to clear any doubts relating to multi-gas applications.

Q: What are the environmental considerations when using seamless steel oxygen cylinders?

A: From a sustainability perspective it is crucial to manage the disposal and recycling of 40l 150bar seamless steel oxygen cylinder after they reach their end of life. Another environmental impact reduction method for gas storage and transportation involves preventing emissions and leakages during service use.

Q: How does a cryogenic dewar work?

A: A cryogenic dewar is a highly insulated vessel specifically designed to hold materials at extremely low temperatures. A vacuum is often used to insulate a dewar. Vacuum insulation is achieved by pumping out all the air between the double wall enclosing the entire dewar.

Q: What is a cryogenic dewar?

A: A Cryogenic Dewar is a specialized container designed to store and transport liquefied gases such as liquid nitrogen, oxygen, argon, or helium at cryogenic temperatures, typically below –150°C. It minimizes heat transfer to keep the contents cold for extended periods.

Q: How long can a cryogenic dewar hold liquid nitrogen?

A: Depending on size, insulation quality, and usage, a Dewar can hold liquid nitrogen from a few days to several weeks. Small lab Dewars typically retain liquid for 3–10 days, while large industrial ones may last up to several weeks.

Q: What is the function of the vacuum layer in a cryogenic dewar?

A: The vacuum layer acts as an excellent insulator by eliminating most of the air molecules that could transfer heat via conduction or convection. This helps maintain extremely low internal temperatures.

We're well-known as one of the leading pressure vessel manufacturers and suppliers in China. Please rest assured to buy cheap pressure vessel from our factory. All custom made products are with high quality and competitive price.

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