Customizable Square Outer Frame for Ductile Iron Manhole Covers

Our standard materials cover carbon steel, stainless steel, alloy steel and wear-resistant cast iron. Custom special material is fully acceptable. All materials comply with international industrial standards, and relevant material test reports will be supplied prior to shipment.

All components go through rigorous heat treatment and full quality inspection. Our products feature superior wear resistance and impact toughness, exceeding the industry average. Their service life can be extended by over 20 percent under tough mining and farming environments. They have been widely adopted by well-known domestic and international mining and agricultural machinery brands.

The minimum order quantity is 50 pieces for standard parts, and 100 pieces for custom-made items. We welcome sample trial orders.

The standard production cycle for bulk orders ranges from 25 to 45 working days. The exact timeline depends on order volume and process complexity. We offer priority production lines for urgent orders.

Absolutely. We can send photos or short videos of each key production stage upon your request after order confirmation.