❌ Pain Point: Inconsistent Cylinder Quality

Many overseas buyers receive cylinders with wall thickness deviations or poor seam welding, risking safety and refill permits.

✅ Our Solution

Every 4.4L carbon steel cylinder undergoes hydraulic pressure testing (300 bar min), ultrasonic wall measurement, and helium leak detection. Our ISO 9001:2015 certified quality management system ensures batch-to-batch consistency.

❌ Pain Point: Long Lead Times & Unclear MOQ

Import managers often face 45–60 day lead times from traditional factories, hurting their inventory planning.

✅ Our Solution

We maintain a buffer stock of raw carbon steel sheets and finished cylinders. Standard MOQ is 300 units, with lead time of 20–28 days. For repeat orders, we can reduce to 15 days. FOB shipments from Shanghai or Shenzhen.

❌ Pain Point: Compliance & Documentation Hurdles

US importers worry about DOT/UN approval and whether certificates are genuine. Some factories provide incomplete documentation.

✅ Our Solution

Our cylinders are manufactured according to UN ISO 9809-1, DOT 49 CFR, and TC standards. We provide full batch test reports, COA, MSDS, and a certificate of origin. All documents are verifiable with regulatory bodies.

❌ Pain Point: Limited Customization for Branding

Brand owners need color-coded cylinders, custom valve threads, or unique labeling – but many factories only offer standard products.

✅ Our Solution

Full OEM/ODM service: we can spray-paint any RAL color, engrave your logo, fit specific valve types (CGA 320, CGA 580, etc.), and package in custom branding. Our in-house design team finalizes proofs in 48 hours.

MOQ & Sample Policy

Standard MOQ: 300 units for first order. Sample orders (1-10 pcs) are accepted for pre-qualification – sample cost deducted from bulk order. We offer free samples for confirmed purchase orders.

Lead Time

Standard production: 20–28 days after deposit. For urgent orders, expedited service (12–15 days) available subject to capacity. We provide weekly production status photos/videos.

OEM/ODM Capabilities

Custom valve thread specs, unique neck ring design, color coding (specific RAL), barcode labels, heat stamp marking, and custom carton printing. We have in-house mold modification for non-standard dimensions.

Packaging & Logistics

Standard: shrink-wrapped + plywood pallets (sea-worthy). Option: individual cardboard packaging with foam inserts. FOB Shanghai / Shenzhen – we also arrange CIF/DDP for regular partners. Port of destination: any major US port (Los Angeles, New York, Savannah).

After-Sales & Warranty

2-year warranty against manufacturing defects. We offer replacement cylinders for any claim verified within 30 days of receipt. Technical support available via email/WeChat/phone. All cylinders are traceable by serial number.

• 🔧 10+ Years Expertise – Founded in 2012, our factory has supplied cylinders to distributors in 18 countries including the USA, Canada, Germany, and Australia.
• 🏭 Integrated Production – In-house stamping, welding, heat treatment, threading, painting, and testing – no outsourcing of critical steps.
• 📜 Full Certification Package – ISO 9001, ISO 14001 (environmental), DOT 49 CFR, UN ISO 9809-1, and TUV/ABS upon request. We provide original copies plus notarized translations.
• ⚡ High-Speed Delivery – Located in Hunan province with direct truck connection to Shanghai port (8 hours) and Shenzhen port (10 hours). We maintain a 3,000-unit+ inventory for quick dispatch.
• 🌱 Recycle Commitment – Our cylinders are designed for 10+ years of service and 100% end-of-life recycling. We buy back used cylinders for material recovery (conditions apply).

Factory assembly line – 4.4L carbon steel cylinders undergoing hydrostatic test.

"We switched to Zhuzhou XingYe after quality issues with our previous supplier. The 4.4L carbon steel cylinders arrived exactly to spec – consistent wall thickness, perfect threading. Their DOT paperwork was clear and accepted by our local inspector. Lead time was 22 days, 8 days faster than quoted. Will reorder monthly."

"As a cream charger brand, I needed a cylinder that looked premium and performed flawlessly. The OEM service was excellent – they matched my Pantone color, engraved my logo, and even helped design the packaging. The 4.4L size is perfect for our 580g N2O tanks. Fast communication throughout."

"I've visited many cylinder factories in China – this one stands out for cleanliness and testing rigor. They allowed a third-party inspector from SGS during production. The 4.4L carbon steel recycle cylinders passed with 100% acceptance rate. The team is responsive and honest about lead times. Highly recommend."

"We needed a reliable source for 4.4L cylinders used in portable fire extinguisher refills. Compliance was a major concern. Zhuzhou XingYe provided full UN and UKCA documentation, and the cylinders have been in service for 12 months without a single leak. Excellent after-sales follow-up."

"Price and quality balance is hard to find – this factory gets it right. The 4.4L carbon steel tanks are sturdy, and our customers love the bright blue finish we chose. Shipping to Mexico was smooth; they handled all customs documentation. Will be ordering again soon."

About the Author

Michael Chen – Senior Technical Director, Gas Cylinder Manufacturing

Michael has spent 15 years in high-pressure cylinder engineering, including senior roles at two ISO-certified factories in China. He leads quality compliance and R&D at Zhuzhou XingYe Chemical Co., Ltd. and has personally overseen more than 500 container exports to North America and Europe. He holds certifications in pressure vessel design (GB 150) and is a member of the International Association for Pressure Vessel Safety.

Heat treatment furnace for uniform mechanical properties.

Final inspection – 100% pressure and leak check.

Packed cylinders ready for FOB Shanghai.

📞 WhatsApp/Call: +86 19313298383
📧 Email: boss@happywhip.com

🏢 Office: Room 619-3, Henghe Industry, No. 1099 Qingxia Road, Zhuzhou, Hunan, China
🌐 Web: Contact Page