4.90-19 Inner Tube TR218A

Product Details

The 4.50-19 Inner Tube TR218A is designed for tractors, harvesters, and farm equipment operating in field and road conditions. Made from high-quality natural rubber or butyl rubber, it offers excellent elasticity, tear resistance, and reliable air retention. Engineered to withstand heavy loads, rough terrain, and exposure to moisture and agricultural chemicals, it ensures consistent performance throughout planting, tilling, and harvesting seasons.

Individual Protection

Each inner tube is packed in a plastic bag to prevent dust, moisture, and contamination.

Strong Outer Packaging

Tubes are placed in woven bags or cartons, ensuring safe transportation and storage.

Palletized for Export

Bulk orders are packed on pallets with stretch film, suitable for sea freight and container loading.

Clear Labeling

Each package includes a label with model, size, quantity, valve type, weight, and manufacturer details.

Valve Protection

Valve stems are protected with foam or cardboard inserts to avoid damage during handling and transit.

Custom Packaging Available

We offer OEM packaging: custom logo, brand name, bag material, and label design according to buyer’s requirements.

Mixed Sizes Supported

Different tube sizes can be packed in one carton or pallet to meet small batch or sample orders.

Eco-Friendly Options

Recyclable packaging materials are available upon request.

Quality Assurance

In-House Raw Material Control

Natural rubber and recycled rubber are produced in our own facility, ensuring stable quality and full traceability.

24-Hour Inflation Test

Every inner tube is inflated and standing for 24 hours to verify airtightness — a rigorous standard beyond industry norm.

Batch Traceability

Each production batch is recorded and traceable from raw material to finished product.

Environmental Compliance

ISO14001 certified with closed-loop water treatment system, reducing environmental footprint.

Service
Commitment

One-Stop Sourcing

We supply inner tubes, flaps, and valves together — simplifying procurement for our customers.

Flexible Ordering

No MOQ limitation for samples and small batches. Mixed sizes accepted.

Customization Available

Valve type, logo, and packaging can all be customized without high minimums.

Company Profile

30+ Years of Heritage

Evolved from Pingyao County Welfare Rubber Factory (founded 1993), with over three decades of rubber manufacturing experience.

Large-Scale Production

100,000 m² factory area, 600+ employees, 60,000 tons recycled rubber/year, 10 million flaps/year, 5 million inner tubes/year.

Trusted by Leading Brands

Long-term supplier to SAILUN, LINGLONG, ARMOUR, ADVANCE, DOUBLESTAR, HAOHUA; TECHING, MARCHER, and more.

Enterprise Spirit

"Create value for customers, build platform for employees, take responsibility for society."

Specifications

4.50-19

Size	4.50-19
Material	Natural Rubber/Butyl Rubber
Width (mm)	143
Flat Outer Circumference (mm)	2160
Wight (g≥)	1350
Valve	TR218A/TR13/TR15/Z1-03-1/Z1-01-1/Z1-02-2
Tensile Strength (Mpa≥)	8	12	14.7
Elongation at Break (%)	400	450	500
Splice Strength (Mpa≥)	5	7	8.4
Valve Adhesion Strength (Mpa≥)	4
Thickness Uniformity (%)	-17.5%～+17.5%
Minimum Allowable (mm≥)	0.7

FAQ

FAQ

Q1: What is the minimum order quantity?

A: Samples and small batch orders are accepted. MOQ can be negotiated based on your needs."

Q2: Do you support OEM service?

A: Yes, we support OEM customization including logo, label, valve type, and packaging."

Q3: What is the delivery time?

A: For stock items: 1-3 working days. For regular production: 30-45 days."

Q4: How do you ensure product quality?

A: 100% visual inspection before shipment. Physical properties (tensile strength, elongation, etc.) are tested per batch."

Q5: What is the warranty period?

A: 12-24 months depending on the product and application conditions."

Q6: Can I mix different sizes in one container?

A: Yes, mixed sizes are accepted for container orders to optimize shipping costs."

Q7: What valve types are available for 4.50-19 inner tube?

A: Available valve types include TR218A; TR13; TR15; Z1-01-1; Z1-02-2; Z1-03-1, and more."

Q8: Do you supply inner tubes and flaps together?

A: Yes, we offer one-stop sourcing for inner tubes, flaps, and valves."

Q9: What is your production capacity?

A: 100,000 m² factory area, 600+ employees, 60,000 tons recycled rubber/year, 10 million flaps/year, 5 million inner tubes/year."

Q10: Which tire brands are you cooperating with?

A: We are a long-term supplier to SAILUN, LINGLONG, ARMOUR, DOUBLESTAR, ADVANCE; HAOHUA; TECHING; MARCHER, and more."

Q11: Do you accept third-party inspection?

A: Yes, third-party inspection is welcome before shipment."

Q12: Do you have environmental certifications?

A: Yes, ISO14001 certified with closed-loop water treatment system."

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