China CNG Gas Cylinder

Compressed gas cylinders are used regularly in science and engineering buildings, machine shops, and
retail and campus dining.
Researchers, staff, and contractors store and use various types of compressed gases for different reasons.

CNG Gas Cylinder which can storage natual gas under presure 20MPa or 25MPa are made of 4130X
seamless steel tube with ISO9809-1/ISO9809-3/EN/DOT approval.
which are explosive pressure vessels containing flammable and explosive gases.
The storage pressure for automotive cylinders is 20MPa.

There are 4 categories available in CNG gas cylinders.
The first category is seamless alloy steel cylinders (CNG-1).
CNG-2 is a composite gas cylinder with steel or aluminum lining and a barrel reinforced
with long fibers impregnated with “hoop winding” resin.
The third category is composite gas cylinders with aluminium liner plus carbon fibre fully
wound and glass fibre ring wound reinforcement (CNG-3).
The fourth category is the composite gas cylinder with plastic liner plus carbon fibre
full winding and glass fibre ring winding reinforcement (CNG-4).

Each of these Compressed Gas cylinders has its own advantages and disadvantages and it depends.

The main cylinders used worldwide are steel cylinders, generally made from high quality
chromium-molybdenum steel, and the ISO 11439 and ECE R110 standards can meet
the requirements of most countries.

A complete automotive CNG cylinder has a cap, a valve and a safety relief device.
The cap protects the valve and the safety relief device on the valve should be of
the rupture disc-fusible plug combination type.

Shipping & Delivery

BluNet provides reliable and fully documented global shipping solutions for industrial gas cylinders, cryogenic equipment, and related systems. Our logistics services are designed specifically for B2B international trade, ensuring secure, compliant, and efficient delivery to your designated facility or project site.

Estimated transit times are based on standard international sea freight schedules and do not include production lead time, export documentation processing, customs clearance, or local delivery arrangements. Actual delivery times may vary depending on destination, order quantity, carrier availability, port conditions, and customs procedures.

Europe: 25 – 40 days via sea freight
North America: 25 – 40 days via sea freight
Asia: 7 – 15 days via sea freight
Middle East & Africa: 20 – 35 days via sea freight
Australia: 20 – 35 days via sea freight

Due to international transportation regulations for pressure vessels and industrial gases, BluNet primarily arranges shipments via sea freight.

We support international trade terms including EXW, FOB, CIF, CFR, DAP, and DDP, depending on your procurement and logistics requirements.

Unless otherwise agreed in writing, import duties, taxes, customs clearance charges, and destination handling fees are the responsibility of the buyer. BluNet will provide the required export and shipping documentation, including commercial invoice, packing list, bill of lading, certificate of origin, and product certifications if required.

Shipment tracking information will be provided once the goods are dispatched, allowing full visibility of the shipment throughout transit.

Returns & Refunds

At BluNet, we are committed to supporting our international partners with reliable products and professional service. In the event of product discrepancies or shipment damage, our structured return and replacement process helps minimize disruption to your operations.

Return Guidelines:

Return requests must be submitted within 14 days of product receipt.
Products must remain unused and in their original packaging unless the issue involves manufacturing defects or shipping damage.
Damaged or defective items must be documented with photographs and relevant shipping documents.
Custom-made, pressure-certified, or specially configured products may not be eligible for return unless confirmed as defective.

Once a return request is reviewed and approved, BluNet may provide replacements, credit notes, or refunds according to the agreed trade terms and order conditions. Refunds are processed through the original payment method or applied toward future orders where applicable.

Please note that freight charges, customs duties, taxes, and destination handling fees are non-refundable unless the issue is confirmed to result from manufacturing defects or shipment errors caused by BluNet.

For assistance with shipping, export documentation, returns, or order support, please contact our international sales team:

📧 info@gaseschina.com
🌐 www.gaseschina.com

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ISO11439 CNG Gas Cylinders