Hubei Luzhongbao Joins National Manhole Cover Standard Drafting in Beijing, Driving Urban Public Facility Safety Upgrades  

A small manhole cover carries immense responsibility for urban safety. One Hubei-based enterprise is now contributing its technical expertise to national standard development, safeguarding the footsteps of millions.   The Standardization Administration of China (SAC) recently initiated the revision of the national standard Urban Public Facilities - Manhole Cover Service Systems in Beijing. Hubei Luzhongbao Metal Products Co....

Luzhongbao EN124 Ductile Iron Manhole Cover Solutions Launch at VIETBUILD HCMC 2025

Arming Urban Underground Arteries with "Safety Armor"   Luzhongbao EN124 Ductile Iron Manhole Cover Solutions Launch at VIETBUILD HCMC 2025   June 25-29, 2025 | Booth A2-634 _cuva Subtitle: The Overlooked Ground Defense As Vietnam accelerates urbanization, manhole covers bearing over 30kg/cm² serve as the first line of defense for road safety.   —Yet according to the Vietnam Infrastructure Association, r...

Luzhongbao Professional Ductile Iron Manhole Covers Debut at VIETBUILD HCMC 2025

Luzhongbao Professional Ductile Iron Manhole Covers Debut at VIETBUILD HCMC 2025 Booth: Hall A2-634 | Dates: June 25-29, 2025   Dear Industry Partner,   Luzhongbao Metal Products Co., Ltd. cordially invites you to visit Booth A2-634 at the 2025 VIETBUILD Ho Chi Minh City International Construction Exhibition. As China's specialized manufacturer of ductile iron manhole covers, we will showcase high-performance products...

[Luzhongbao] In Vietnam, We Make Every Inch of Road "Rock-Solid"!

[Luzhongbao] In Vietnam, We Make Every Inch of Road "Rock-Solid"!   June 25-29 | VIETBUILD HCMC | Booth A2-634 – Experience the Power of Professional Manhole Covers! Struggling with These Problems? Manhole settlement causing uneven roads? Noise pollution triggering constant complaints? Frequent theft driving up maintenance costs? Corrosion and cracking shortening lifespan? Visit Luzhongbao at Booth A2-63...

Luzhongbao Professional Manhole Covers Shine at VIETBUILD Hanoi/Ho Chi Minh City

Luzhongbao Professional Manhole Covers Shine at VIETBUILD Hanoi/Ho Chi Minh City! Booth A2-634 – Join Us in Building a Safer Future! Dear Valued Clients, Partners, and Industry Peers, We cordially invite you to visit the Luzhongbao Metal Products Co., Ltd. booth at the 2025 VIETBUILD Hanoi / Ho Chi Minh City International Construction Exhibition! As a leading Chinese manufacturer specializing in manhole covers, particularly du...

2025 Vietnam International Building Exhibition

Luzhongbao Set to Shine at 2025 Vietnam International Building Exhibition: Green Technology Empowers a New Era of Smart Construction in ASEAN   June 10, 2025, Shenzhen, China — Luzhongbao Group, a global pioneer in green building materials innovation, officially announced its grand debut at the 2025 Vietnam International Building Exhibition (VIETBUILD 2025), taking place from June 25 to 29 at the VISKY Exhibition Center in H...

Luzhongbao Showcases Cutting-Edge Ductile Iron Tech at Jakarta Mega Build Asia

Luzhongbao Showcases Cutting-Edge Ductile Iron Tech at Jakarta Mega Build Asia, Safeguarding Indonesia’s New Capital Construction   Event: Indonesia International Building Materials Exhibition 2025 (Mega Build Asia)   Booth: Hall 5, Zone D, Stand 2E - Jakarta ICE Convention Center   Dates: July 2-6, 2025   联系我们 Indonesia’s Infrastructure Opportunity: New Capital Drive Ignites Premium Manhole C...

Luzhongbao Leads Vietnam’s Infrastructure Upgrade  

Vietnam International Building Materials Exhibition 2025 (SKY EXPO)   Booth: A2-634 | Dates: June 25-29, 2025 | Venue: SKY EXPO International Convention Center, Ho Chi Minh City   _cuva Vietnam’s Infrastructure Boom: Golden Window for Manhole Cover Demand   Vietnam is accelerating its $140 billion North-South High-Speed Railway and "1 Million Social Housing" initiative, creating an annual shortage of 2 mil...

Hubei Luzhongbao Manhole Cover

Hubei Luzhongbao – Empowering Urban Infrastructure with Material Innovation and Functional Design I. Material Performance Advantages: Scientific Formulation for Superior Quality High Strength & Lightweight Integration Utilizes QT500-7 ductile iron with tensile strength ≥420MPa and yield strength ≥300MPa, comparable to low-carbon steel and 3x stronger than gray cast iron. Spherical graphite structure reduces dens...

Why Are 90% of Manhole Covers Worldwide Round?

I. Circular Covers: A Century-Proven Engineering Optimum In municipal engineering, manhole cover shapes are no accident. Circular design is the gold standard validated by a century of practice, grounded in precise engineering logic: Absolute Anti-Fall Mechanism Geometric Advantage: The circle is the only 2D shape with a constant diameter. No matter how rotated, its outer edge always exceeds the inner diameter of the manh...