Company Profile
Jiangsu Huayan International Trade Co., Ltd. was established in 2005 and is headquartered in Xuzhou, Jiangsu Province, China. It is a leading integrated transportation solution provider integrating R&D, production and trade. Covering an area of 222,000 square meters, the company uses advanced automation equipment, a professional R&D team and cutting-edge manufacturing technology to provide high-quality special transportation equipment, including gas equipment (pressure reduction skids, cryogenic storage tanks, gasifiers), hydraulic modular trailers, gas pipeline slide container trailers, powder/liquid tankers and a full range of semi-trailers (heavy-duty low-bed, flat container, skeleton, side curtain, self-unloading) for energy, hazardous chemical transportation and engineering logistics. Its core hydraulic system is compatible with international brands such as Goldhofer and Scheuerle, ensuring compliance with global technical standards. The company has more than 20 years of export experience and serves more than 30 countries including Peru, India, Russia and Brazil. The company has passed ISO9001, ASME, ADR certification, has a R&D team of more than 60 people (including 8 senior engineers), and has achieved a 100% order delivery rate through ERP+MES digital management. The company is committed to sustainable development, adhering to the values of innovation, quality, expertise and mutual benefit, and providing safe, efficient and environmentally friendly transportation solutions worldwide.

Product Description
This series of pressure-regulating boxes is primarily designed for medium and low-pressure gas transmission and distribution systems. Each unit includes a filter, pressure regulator (with self-shutoff and release functions), ball valve, pressure gauge, and enclosure. The box features a compact structure, easy maintenance, and reliable safety performance. It is suitable for use in civil buildings and at small to medium-sized sites, such as apartment complexes, hotels, and restaurants. Additionally, it can be used with low-pressure gas boilers and small direct-fired turbines. The enclosure is manufactured from stainless steel, spray-coated cold-rolled steel or fiberglass.
Product Parameters
Technical parameters |
Structural mode: |
two-stage pressure regulation, overall skid-mounted. |
Rated gas supply: |
1000m³/h |
Inlet pressure: |
25MPa |
Outlet pressure: |
0.2-0.4MPa |
Pressure reduction level: |
2 levels |
Heat exchange level: |
2 levels |
Heat exchange temperature: |
60-75ºC |
Outlet temperature: |
≥-5ºC |
Shut-off valve power: |
0.2-0.6Mpa (compressed air) |
Alarm mode: |
sound and light dual alarm |
Medium: |
compressed natural gas |
Product Recommendations
1. Features of pressure reducing skid:
It integrates functions such as unloading pressurization, tank pressurization, gasification, pressure regulation, metering, odorization, and electrical control. It has a compact structure and occupies a small area. The design pressure can reach 21.8 MPa, the outlet pressure adjustment range is wide (0.2-1.6 MPa), the flow rate covers 200-2000 Nm³/h, supports remote monitoring, and can be unattended. Equipped with low-temperature liquid phase safety valve, gas phase overpressure emergency shut-off valve, electrostatic grounding and other devices, it can adapt to extreme climates (resistant to 4-magnitude earthquakes and 160 km/h wind speeds).
2. Features of the gasifier:
Adopting air temperature or water bath design, low temperature liquid is gasified from bottom to top. Maximum flow rate is 8000 m³/h, and the outlet temperature is not lower than the ambient temperature by 10ºC. Fin combination (such as 8+12 or 4+8) can reduce frosting and improve gasification efficiency. Integrated design, 14 meters high and weighing about 7.1 tons. Made of stainless steel bolts and aluminum alloy welding. Equipped with safety valve and emergency shut-off valve, supports electric hot water bath heating, ensures low temperature operation, easy maintenance and reusable.
3. Features of low-temperature storage tanks:
It adopts a double-layer vacuum insulation structure, with a distance of 300 mm between the carbon steel shell and the stainless steel liner, and the interlayer is filled with pearlescent sand and vacuumed. The volume can reach 150 m³ (3.72 m in diameter and 22.45 m in height), with an empty mass of about 50 tons and a full load of 123 tons. It contains 7 process pipelines (such as gas phase pipes, liquid inlet pipes, overflow pipes, etc.), a safety discharge device is installed on the top, and a vacuum pipe and a vacuum measuring pipe are configured at the bottom. The outer wall integrates safety facilities such as fire sprinklers and lightning rods.
Real-time data collection through pressure gauges, differential pressure level gauges and secondary instruments meets the national pressure vessel manufacturing and acceptance specifications.
Equipment relevance:
The cryogenic tank is responsible for the low-temperature storage of liquid natural gas (LNG/CNG) (-196ºC design temperature);
The vaporizer converts the liquid into gas through air temperature or water bath heating;
The pressure reducing skid adjusts the pressure of the gaseous medium (such as reducing it to 0.4 MPa), measures it and then delivers it to the pipeline network.
Linkage between safety and performance:
The insulation performance of the storage tank and the frosting control of the vaporizer jointly guarantee the gasification efficiency;
The emergency shut-off valve of the pressure reducing skid and the safety release device of the storage tank form a double protection, and the linkage is realized through the centralized monitoring system.
The three are mostly used in energy supply systems such as LNG gasification stations and CNG pressure reducing stations to meet the needs of industrial gas, urban pipelines, etc., and have the characteristics of strong mobility and short construction period.
Certifications
Patent certificate
Our company's products have passed IS09001, 14001 and CE certificates, and we can alsoprovide relevant certificates that meet customer national requirements.
Main features:
Integrated equipment that integrates pressure regulation, metering, filtration, safety cut-off and safety release.
Strict performance tests (air tightness test and pressure test) are carried out before leaving the factory. After reaching safety and stability, it can be shipped from the factory.
The equipment has a reasonable structural design, beautiful appearance, small footprint, and meets environmental protection and aesthetic requirements. Suitable for indoor and outdoor installation.
Good scalability, gas alarm, data acquisition and insulation and other supporting projects can be added according to user requirements, which can meet the use requirements of various working conditions.
The equipment is easy to install and debug, use and maintain.
Reasonable structure, complete functions, high reliability, good system coordination

advantage:
Our multi-support parts-including emergency valves, pressure gauges, and safety valves-are precision-engineered with shot-blasted surfaces, epoxy coatings, and acrylic finishes for superior rust resistance and durability. Designed to deliver precise control, safety-focused functionality, and long-term reliability, they are backed by over two decades of expertise, advanced welding technology, and stringent quality control standards.

All products can be customized as required please contact us
Partners and Customers

Exhibition and team

Cooperation Process
After order

Packing & Delivery
Delivery capability
Our company will prepare a delivery schedule for your project, and we have good logisticscapabilities to provide you with domestic and international logistics delivery capabilities in China.


FAQ
1. What are the main components of a CNG PRMS?
1. Regulator
2. Flowmeter
3. Water heater
4. Valves
5. Pipelines
2. What products can you provide?
1. CNG Skid container & tube trailer
2. CNG PRMS
3. CNG Mobile Station
4. Gas Compressors(we have been a leading manufacturer of compressors for over 40 years)
5. Gas vaporizer Equipment(LNG Station, Vaporizer, BOG, EAG)
6. Trrailer(hydraulic modular trailer, windmill blade trailer, lowbed trailer)
3. May I have the best price from you?
Sure. We are always on the way to promoting our product price and service competitiveness.
4. Do you provide a one-stop service so I can save my time and labor?
You will own a professional team in China by cooperating with HUAYAN
5. What's the delivery time?
If the standard models are in stock material, we can ship them out within 30 days after payment.
If customized, 40 days can be ready for shipment.