
Product name:Industrial oxygen, Oxygen, Pure oxygen, High purity oxygen, Ultra pure oxygen, O2
Oxygen relative molecular mass: 31.9998 (calculated according to the 2005 international relative atomic mass)
Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds. |
CAS No.: 7782-44-7 |
EINECS No.: 231-956-9 |
UN No.: UN1072 Compressed gas/UN1073 Liquid oxygen |
Purity: 99.99%-99.999% |
Dot Class: 2.2 Non-flammable gas |
Appearance: Colorless, odorless gas |
Grade Standard: Food Grade, Industrial Grade, Medical Grade |
Technical requirements for pure oxygen, high purity oxygen, ultra-pure oxygen:
Project | Index | ||
pure oxygen | high purity oxygen | ultra-pure oxygen | |
Oxygen (O2) purity (volume fraction)/10-2 ≥ | 99.995 | 99.999 | 99.9999 |
Hydrogen(H2)purity(volume fraction)/10-2 ≤ | 1 | 0.5 | 0.1 |
Argon (Ar)purity(volume fraction)/10-6 ≤ | 10 | 2 | 0.2 |
Nitrogen (N2)purity(volume fraction)/10-6 ≤ | 20 | 5 | 0.1 |
Carbon dioxide (CO2)purity(volume fraction)/10-6 ≤ | 1 | 0.5 | 0.1 |
Total hydrocarbon content (volume fraction)/10-6 ≤ | 2 | 0.5 | 0.1 |
Water (H20) content (volume fraction)/10-6 ≤ | 3 | 2 | 0.5 |
Serial number | product | State | Container (L or m³) | Working pressure (MPa) | Container height (excluding bottle valve and bottle cap) mm | Empty weight of container (excluding valve and cap) kg | Filling volume (pressure or weight) MPa or kg | Supply mode |
1 | Oxygen | Gaseous | 4L(Φ140) | 15MPa | 395 | 7.1 | 10-15MPa | Supplied in steel or aluminum alloy cylinders |
2 | Gaseous | 8L(Φ140) | 15MPa | 680 | 11.5 | 10-15MPa | ||
3 | Gaseous | 10L(Φ159) | 15MPa | 671 | 13.5 | 10-15MPa | ||
4 | Gaseous | 15L(Φ159) | 15MPa | 956 | 19 | 10-15MPa | ||
5 | Gaseous | 20L(Φ219) | 15MPa | 715 | 23 | 10-15MPa | ||
6 | Gaseous | 40L(Φ219) | 15MPa | 1315 | 48 | 10-15MPa | ||
7 | Gaseous | 50L(Φ219) | 20MPa | 1315 | 48 | 10-15MPa | ||
8 | Liquid Oxygen | Liquid | Customization | -- | -- | -- | -- | Supplied in cryogenic containers |
9 | Remark | Due to differences in container design pressure, the above data may differ slightly. Please contact us for more details, . |


Experience a Symphony of Colors: Customizable Gas Cylinders in Varied Hues



Experience the precision of our advanced cylinder production: the journey begins with billet sawing and cutting, followed by precise induction heating. Reverse extrusion punching ensures the perfect form, while drawing, edge trimming, and closing deliver a flawless finish. A critical heat treatment process enhances durability, complemented by external sandblasting for a pristine surface. Mouth thread processing and internal sandblasting (or phosphating) secure the interior's integrity, leading up to rigorous water pressure testing. Valve installation and an air-tightness test guarantee safety, followed by a sleek plastic spraying and careful drying. Our meticulous inspection ensures only the best for storage.
2, Steel Pipe Spinning Method:
Our innovative steel pipe spinning method starts with precision sawing and cutting, progressing to induction heating that primes the material for perfection. A seamless spinning bottom sealing and meticulous milling of the inner bottom set the stage for quality. Further induction heating readies the pipe for expert end closing, followed by a thorough heat treatment. Sandblasting preps the surface as we proceed to mouth thread processing and internal sandblasting (or phosphating), ensuring comprehensive conditioning. The process is validated by a robust water pressure test, precise valve installation, and stringent airtightness testing. The final touch is a professional plastic spraying and drying, culminating in a detailed inspection prior to storage.
Choose from our Secure Wooden Pallet Option or Opt for Efficient Bulk Loading Reliable and Sturdy Carton Packaging for Added Protection
Qingdao Sains Gas Technology Co.,Ltd is a distinguished and highly professional gas manufacturer, specializing in a comprehensive array of gases. Leveraging our extensive experience and pioneering technological development capabilities, we empower and support a broad spectrum of industrial sectors. From steel, chemicals, and electronics to automobiles, construction, and shipbuilding, as well as food and beverages, and medical care, our expertise knows no bounds. Our unwavering commitment is grounded in excellence and innovation, providing unparalleled support and solutions to our clients. "focusing on sophisticated and cutting-edge gas application solutions."

High Quality with Reasonable Competitive Price |
We manufacture with strict and complete quality control system, and all products are strictly inspected before shipment. Besides, we use advanced technique to reduce any possible cost without lowing quality standard to provide our customers competitive price. |
Fast Delivery Time |
Annual Output of 800,000 pcs and near Qingdao seaport which is one of the biggest seaport of China. |
Excellent Professional Service(24 hours Service Support) |
We are always good at providing solutions and services to be your trustworthy partner. |
OEM/ODM ACCEPTED |
Color, Valve, Cap,Handle, Marks etc. |
Q1: What capacities are available for this gas cylinder?
A1: We proudly offer a versatile range of capacities spanning from 0.8L to 80L, ensuring the perfect fit for your specific needs.
Q2: How long does it take to deliver this gas cylinder?
A2: For our standard 40L gas cylinder, the delivery time is approximately 40L gas cylinder is 15 days from the time we receive your deposit.
For other specifications, delivery is typically within 20-30 days, depending on our production schedule.
Q3: What payment methods are accepted?
A3: We accept payments through TT,L/C, West Union, Paypal, and other convenient methods..
Q4: Which certifications can you provide?
A4: We are pleased to offer our clients certifications including TPED, CE, and TUV, ensuring quality and compliance.