Compressed in cylinders and drawn as cryogenic liquid. Purity grade and packaging are set per order. Tell us the application and we will quote against it.
Our core line. Nitrous oxide filled on electronic-weighing lines into 3.3 L and 40 L cylinders, and supplied as cryogenic liquid. Classified for sea freight under the 2024 IMDG Code by an accredited Chinese testing institute.
Cylinders leave the plant plain or printed. Send artwork and we will quote the sleeve with the fill.
Sleeve-printed body in your own colours and branding.
Character or campaign artwork wrapped over the full cylinder body.
Unbranded matte black with carry handle, ready for your own labelling.
Unbranded white with carry handle, the usual base for private label.
Cylinder weights, water capacity and valve types are confirmed per enquiry.
Filled at the same site, under the same licences.
Compressed oxygen filled into seamless steel cylinders on our own manifold line, plus liquid oxygen drawn from on-site cryogenic storage.
Compressed and liquefied carbon dioxide for carbonation, welding shielding and general industrial use.
Argon and high-purity argon for welding shielding and metallurgical work, available compressed and as cryogenic liquid.
Compressed and liquid nitrogen for inert blanketing, cooling and food freezing.
Dissolved acetylene in porous-mass cylinders for oxy-fuel cutting, brazing and heating.
Liquefied propane for cutting, heating and process fuel duties.
Heyun Gas is an accredited special-equipment inspection body (Class A, Grade B2) under the Hunan Administration for Market Regulation. We carry out periodic inspection of seamless cylinders for oxygen, argon, nitrogen, carbon dioxide and nitrous oxide under inspection code RD6. It is the same accreditation that keeps our own cylinders in service and in date.
See the accreditationMinimum order quantity, monthly capacity and export terms are confirmed against each enquiry. Where purity is shown as quoted per application, it is because the grade depends on what the gas is for, and publishing one figure would misrepresent the others.