Shandong Hongteng Metal Products Co., Ltd. Was established in 2020 and is located in the International Logistics Park of Liaocheng City, Shandong Province. It covers an area of 500 million square meters, has 125 employees, and is equipped with advanced automated casting production lines, spectral analyzers and other professional equipment.

Focusing on the research and development, production, and sales of ductile iron manhole covers, our products have passed ISO9001 quality management system certification and EN124 European standard testing. Our annual production capacity reaches 1 billion tons, and our services cover municipal, power, communication, and other fields. Our cooperative customers are spread throughout the country and overseas markets.

Main products

Ductile iron manhole cover series

-Material: QT500-7/600-3 high-quality ductile iron, tensile strength ≥ 500MPa, elongation ≥ 7%

-Specifications: Round/Square, ranging from Φ 300mm to Φ 1200mm, with a bearing capacity of A15-F900 (EN124 standard)

-Characteristics:

High strength, corrosion resistance, aging resistance, service life of more than 30 years

Precision casting process, error ≤ 0.5mm, sealing up to IP67

Anti settlement design reduces the risk of road collapse

Silent lock, reducing noise by 40%

Customized LOGO/patterns to enhance the city's image

Core advantages

1. Technical strength

-Has 5 patents for manhole cover structures, using lost foam casting+hot-DIP galvanizing process

-The laboratory is equipped with metallographic microscope, impact testing machine, and quality monitoring throughout the entire process

2. Production guarantee

-10T/H medium frequency electric furnace, German HWS automated molding line, daily production of 1000 sets of manhole covers

-Production strictly in accordance with GB/T23858-2009 and CJ/T327-2010 standards

3. Environmental Commitment

-Configure a bag dust removal system with a waste sand recovery rate of ≥ 95%, meeting the national environmental protection A-level standard

Service Commitment

Provide free product selection solutions and technical consultation

Fast delivery within 15 days, urgent orders require urgent production within 72 hours

10-year warranty, lifetime maintenance, and after-sales response within 48 hours

Support ODM/OEM customization and provide product testing reports

Contact Us

Address: Huitong International Logistics Park, Economic and Technological Development Zone, Liaocheng City, Shandong Province

Crafting quality with ingenuity and building the future with integrity