gas
If you work in the welding industry, medical field, or laboratory sector, you probably know the cost of choosing the wrong gas or an unsuitable grade. At Bonyan Gas Pishro, we supply industrial, medical, and laboratory gases with specified grades and certificates of analysis.
To get a price quote and place an order, select the gas you need from the list below, or contact our sales experts directly.
Gas Grades and the Importance of Purity
One of the most important criteria for selecting a gas is its purity level. Gases are produced in various grades to meet the needs of general industries, sensitive production lines, and research centers. The higher the gas purity, the lower the level of impurities present. Selecting the appropriate grade is very important and can directly affect the accuracy of results and the quality of the final product.
For example, in the TIG welding process for aluminum, grade 3.5 is sufficient, but for GC analysis in a pharmaceutical laboratory, grade 5.0 is required. If you are unsure about selecting the right grade, consult our experts.
| Grade | Approximate Purity | Suitable Application |
|---|---|---|
| 2.5 | 99.95% | General industrial applications |
| 3.5 | 99.95% | Specialized industries |
| 4.5 | 100.00% | Laboratories and sensitive equipment |
| 5.0 | 100.00% | Research and ultra-sensitive processes |
| Special | Above 50% | Advanced industries and specific applications |
Selection Guide by Industry
Keep in mind that choosing the wrong gas — both in terms of process quality and safety — will be costly. To avoid unnecessary expenses, find your industry to see which gas and grade is suitable for you.
Medical Centers and Hospitals
Medical oxygen, nitrous oxide, and CO2 with certificate of analysis and ISIRI 304 standard
Welding and Cutting Tool Shops
Argon, industrial oxygen, acetylene, and CO2 for various welding and cutting applications
Food and Packaging Industries
Nitrogen and CO2 for MAP packaging, oxidation prevention, and quick freezing
Laboratories and Gas Mixing Companies
Grade 5.5 helium and hydrogen for chromatography and calibration gas mixtures
Petrochemical and Chemical Industries
Industrial hydrogen, nitrogen, and liquid nitrogen for chemical processes and cooling
Helium Balloon Shops
Helium gas for foil and latex balloons, with periodic supply based on consumption volume
Do You Need a Gas Cylinder?
Any gas, of any grade, without the right cylinder, forms an incomplete supply chain. If you need an empty or full steel or aluminum cylinder, check here.
Steel and Aluminum Gas Cylinders →
How Gas Supply and Delivery Works
⚪ Nationwide Coverage and Delivery Across Iran
All specialty, industrial, and laboratory gases are loaded in high-pressure cylinders or cylinder pallets (bundles), in full compliance with safety protocols, and shipped to all of Tehran and every province in the country.
⚪ Flexible Supply Options
Periodic and Contract Supply (for organizations): For factories, hospitals, medical centers, and laboratories that require continuous, uninterrupted gas injection into their lines, regular scheduled supply contracts are established to prevent any stoppage in production processes.
One-Time and Partial Order Placement: For temporary projects, small workshops, or irregular orders, the ordering process is completed by phone or through the website’s online forms as quickly as possible.
Collaboration on Tenders and Large-Scale Projects: To meet the needs of companies participating in government and private tenders, all technical documentation, laboratory gas analysis, standard certificates, and official pro forma invoices (in compliance with tax regulations) will be provided.
Organizational Supply and Government Tenders
For organizational contracts, government tenders, and bulk orders, the Bonyan Gas sales team provides technical documentation, standard certificates, and official invoices.
Request Organizational Contract →
Why Choose Us
🏭 Continuous, Uninterrupted Gas Supply
Setting up regular, periodic distribution schedules for hospitals, factories, and laboratories to prevent interruptions in consumption lines.
✅ Official Certificate of Analysis (CoA)
Precise measurement of purity and quality grade for every gas shipment prior to delivery, with valid laboratory documentation provided to the customer.
🔩 Expert Consultation on Gas Grade Selection
Technical guidance from experts for precise selection of gas grade and purity suited to the sensitivity of your process.
🚚 Safe Logistics and Nationwide Delivery
Delivery capability for all types of cylinders, cylinder pallets, and cryogenic tanks (dewars) to all provinces and cities across the country.
📋 Compliance with National ISIRI Standards
Supply and distribution of all medical and industrial gases fully compliant with Iranian national standard requirements (ISIRI 304 and ISIRI 712).
💬 Full Support for Industrial Tenders
Fast issuance of official pro forma invoices, provision of technical catalogs, and standard certificates required by organizations.
The choice of gas depends on your process type, equipment sensitivity, and usage conditions. For a more precise selection, it’s best to take advantage of our specialized consultation services before purchasing.
Yes, for industrial, laboratory, and manufacturing units, it is possible to arrange scheduled regular supply.
Due to market fluctuations and differences between grades, prices change daily and can be inquired about whenever you intend to make a purchase
Grade indicates the level of gas purity, and in sensitive applications, it can directly affect product quality and process accuracy.
Yes. Mixed gases with a specified ratio and grade can be supplied for calibration, laboratories, and specialized applications. You can discuss your desired technical specifications with our experts before purchasing.
The price of industrial and laboratory gases is influenced by various factors such as gas type, grade and purity level, order volume, global market conditions, production costs, transportation costs, geographic region, and supply and demand levels. For this reason, the final price of each gas is determined based on its technical specifications and supply conditions, and may change over different time periods.