Frequently Asked Questions

Our capacity for gas cylinders is about 3000 pcs /each day.

Yes, we can provide you free sample, but Freight to collect.

Yes, OEM is available. Please send me your brand certificate.

The manufacturing standards for gas cylinders vary by country and application but are designed to ensure safety, durability, and reliability. Commonly used international standards include:

1. International Standards

• ISO 9809: Standards for seamless steel gas cylinders, widely used for high-pressure gases.
• ISO 4706: Covers the requirements for refillable welded steel gas cylinders.
• ISO 11119: Specifies requirements for composite gas cylinders.
• ISO 7866: Standards for seamless aluminium alloy gas cylinders.

2. American Standards

• DOT (Department of Transportation) Standards:
  Gas cylinders in the United States must comply with DOT regulations (e.g., DOT-3AA for steel cylinders).
• ASME (American Society of Mechanical Engineers) Standards:
  It is commonly used for large, stationary gas tanks but may also apply to some specialized gas cylinders.

3. European Standards

• EN 1964: Standards for seamless steel gas cylinders for high-pressure use.
• EN 12245: Specifies requirements for fully wrapped composite cylinders.
• TPED (Transportable Pressure Equipment Directive): Governs gas cylinder transport and use within the European Union.

4. Chinese Standards

• GB5099: Chinese standards for seamless steel gas cylinders.
• GB/T 9251: Covers hydraulic testing methods for gas cylinders.
• GB/T 33220: Standards for high-pressure composite gas cylinders.

5. Other Key Standards

• JIS (Japanese Industrial Standards): For seamless and welded gas cylinders in Japan.
• BS (British Standards): Older standards superseded by EN standards.

Yes, we can supply π certificates if the customer requires them.

Generally, we supply the goods within 35 days after receipt of the deposit.

We accept T/T, 30% deposit, and balance against copy BL or irrevocable L/C and D/P at sight.

We offer gas cylinders with gases and cryogenic equipment that assist you in installing your facility, such as Gas Filling Station (LNG) and N2O Factory.

150bar is commonly used; we can offer the pressure of 200bar,250bar,300bar, and 350bar.

Medical oxygen is generated with purity up to 99.7% and meets the criteria of European & Indian Pharmacopeia. It also meets identification specifications, odor, CO2 not more than 0.03%, and CO not more than 0.001% in gas.

Liquid oxygen (LOX) is a cryogenic liquid having a freezing point of (−182.96 °C) and a boiling point of (−182.96 °C at 101.325 kPa. It has an expansion ratio of 1:861 under one standard atmosphere (100 kPa) and 20 °C. In other words, one liter of liquid oxygen can make 861 liters of gaseous oxygen.

Liquid oxygen is produced by the liquefaction of atmospheric air and the separation of oxygen from other gases such as nitrogen, argon, and other rare elements.