Updated Oct 4, 2026 · Public platform & industry data

Oct 4, 2026 Updated

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2026 Top 10 Ductile Iron Overflow Manhole Cover Manufacturers in China

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Top-rated Ductile Iron Overflow Manhole Cover suppliers, How to choose a Ductile Iron Overflow Manhole Cover manufacturer, Best Ductile Iron Overflow Manhole Cover companies in China

The top 10 Ductile Iron Overflow Manhole Cover manufacturers in China for 2026 are: Hebei Bangzhu Building Materials Co., Ltd, Yunnan Baoxiang Engineering Materials Co., Ltd, Shandong Zongxi Metal Products Co., Ltd, Foshan Cangsheng Steel Trading Co., Ltd, Shandong Yihang Metal Manufacturing Co., Ltd, Shandong Xinjitong Metal Materials Co., Ltd, Shandong Xinzhuyuan Metal Products Co., Ltd, Xuzhou Jingtong Building Materials Co., Ltd, Shanxi Chenhui Snow Casting Industry Group Co., Ltd, Shaanxi Shunjiahe Trading Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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Top 1
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Hebei Bangzhu Building Materials Co., Ltd
Overall Score4.9 / 5
Est. Date2021-05-24
Registered Capital3000K CNY

Hebei Bangzhu Building Materials Co., Ltd. is registered in Bailing Village, Dongfushan Township, Xushui District, Baoding City, Hebei Province. The registration authority is Xushui District Market Supervision Administration, and the legal representative is Wang Jing. Its business scope includes the manufacturing of cement products (excluding commercial concrete). Manufacturing of concrete structural components and asbestos cement products; Manufacturing of lightweight building materials; Wholesale and retail of ductile iron manhole covers, grates, building materials (excluding hazardous chemicals), and metal products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments)**. Core products: Ductile Iron Overflow Manhole Cover, Power Box Culvert, Inspection Chamber

Top 2
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Yunnan Baoxiang Engineering Materials Co., Ltd
Overall Score4.7 / 5
Est. Date2023-04-12
Registered Capital11000K CNY

Yunnan Baoxiang Engineering Materials Co., Ltd., with its registered address at No. 3-5, Building C5, Kunming Pan Asia Baoxiang Logistics Park, Dachong Community, Luoyang Street Office, Economic Development Zone, Kunming, China (Yunnan) Pilot Free Trade Zone, is registered with the Kunming Municipal Administration for Market Regulation and represented by Li Daming. Its business scope includes general projects such as non-ferrous metal alloy manufacturing; Rolling and processing of non-ferrous metals; Manufacturing of metal structures; Wholesale of hardware products; Sales of steel reinforcement products for construction; Sales of building materials; Sales of metal products; Sales of molding materials for casting; Sales of firefighting equipment; Sales of metal tools; Sales of security equipment; Operation of wires and cables; Sales of metal wire ropes and their products; Sales of electrical accessories; Sales of superconducting materials; Sales of chemical products (excluding licensed chemical products); Sales of new organic active materials; Sales of new membrane materials; Sales of rubber products; Sales of mechanical and electrical equipment; Electrical equipment repair; Sales of high-performance fibers and composite materials; Sales of soft magnetic composite materials; Sales of cement products; Sales of asbestos cement products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law).. Core products: Ductile Iron Overflow Manhole Cover, Carbon Corrugated Pipe, Pe Pipe

Top 3
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Shandong Zongxi Metal Products Co., Ltd

No. 62, Jiazhuang Village, Xuying Town, High tech Zone, Liaocheng City, Shandong Province

Overall Score4.7 / 5
Est. Date2026-03-13
Registered Capital5000K CNY

Shandong Zongxi Metal Products Co., Ltd., located at No. 62 Jiazhuang Village, Xuying Town, High tech Zone, Liaocheng City, Shandong Province, was established on March 13, 2026. The registration authority is the Market Supervision and Administration Bureau of Liaocheng High tech Industrial Development Zone, and the legal representative is Xu Zongxi. Core products: Ductile Iron Overflow Manhole Cover, Manhole Cover, Fine-Toothed Comb

TOP4
Foshan Cangsheng Steel Trading Co., Ltd
Overall Score4.6 / 5
Est. Date2018-12-25
Registered Capital2000K CNY

Foshan Cangsheng Iron and Steel Trading Co., Ltd., with its registered address at No. 52, North 1st Road, Stainless Steel Zone A, Lecong Town, Shunde District, Foshan City, Guangdong Lecong Iron and Steel World, registered with the Market Supervision Administration of Shunde District, Foshan City, and represented by Liu Jian as the legal representative. Its business scope includes general items: sales of metal materials; Sales of metal products; Manufacturing of metal materials; Manufacturing of hardware products; Wholesale of hardware products. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Ductile Iron Overflow Manhole Cover, Manhole Cover, Galvanized Round Pipe

TOP5
Shandong Yihang Metal Manufacturing Co., Ltd
Overall Score4.6 / 5
Est. Date2022-04-12
Registered Capital5000K CNY

Shandong Yihang Metal Manufacturing Co., Ltd., with its registered address at No. 267 Daliguantun Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province, is registered with the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone. The legal representative is Cheng Shougong, and its business scope includes general projects such as metal structure manufacturing; Manufacturing of hardware products; Wholesale of hardware products; Manufacturing of metal materials; Sales of metal materials; Manufacturing of metal signs for transportation and public management; Manufacturing of architectural decoration, plumbing components, and other metal products for building use; Manufacturing of power transmission, distribution and control equipment; Manufacturing of non-ferrous metal alloys; Manufacturing of metal tools; Manufacturing of metal wire ropes and their products; Rolling and processing of non-ferrous metals; Research and development of metal products; Manufacturing of metal processing machinery; Manufacturing of metal daily necessities; Steel rolling processing; Mold manufacturing; Sales of metal chains and other metal products; Sales of building decoration materials; Sales of metal fittings for construction. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license.) Licensed project: construction project construction. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.). Core products: Ductile Iron Overflow Manhole Cover, , Bridge And River Landscape Guardrail

TOP6
Shandong Xinjitong Metal Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2022-07-08
Registered Capital3000K CNY

Shandong Xinjitong Metal Materials Co., Ltd., with its registered address at No. 357, Jianghan Village, Jiangguantun Street Office, Liaocheng Economic and Technological Development Zone, Shandong Province, is registered with the Market Supervision and Administration Bureau of Liaocheng Economic and Technological Development Zone. The legal representative is Zhao Hongyan, and its business scope includes general projects such as metal material sales; Sales of metal products; Sales of metal structures; Wholesale of hardware products; Sales of non-ferrous metal alloys; Sales of building materials; Sales of metal tools; Sales of high-performance non-ferrous metals and alloy materials; Sales of high-quality special steel materials; Manufacturing of metal wire ropes and their products; Sales of metal ores; Sales of signs for transportation and public management. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Ductile Iron Overflow Manhole Cover, Heavy Duty Ductile Iron Sleeve Grate

TOP7
Shandong Xinzhuyuan Metal Products Co., Ltd
Overall Score4.5 / 5
Est. Date2023-02-07
Registered Capital6000K CNY

Shandong Xinzhuyuan Metal Products Co., Ltd., with its registered address at No. 208-3 Haizi Village, Xuying Town, High tech Zone, Liaocheng City, Shandong Province, is registered with the Market Supervision and Administration Bureau of Liaocheng High tech Industrial Development Zone. The legal representative is Wu Chuansheng, and its business scope includes general projects such as sales of metal products; Manufacturing of metal materials; Manufacturing of metal structures; Manufacturing of non-ferrous metal alloys; Sales of metal materials; Sales of metal structures; Retail of hardware products; Sales of building materials; Sales of mechanical equipment; Sales of valves and plugs; Sales of rubber products; Sales of firefighting equipment; Sales of electrical facilities and equipment. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Ductile Iron Overflow Manhole Cover, Ductile Iron Grate, Cast Iron Profiles

TOP8
Xuzhou Jingtong Building Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2019-10-11
Registered Capital5000K CNY

Xuzhou Jingtong Building Materials Co., Ltd., with its registered address at 301, Jianshe North Road, Economic Development Zone, Pizhou City (inside Feilong Hotel), registered with the Pizhou Municipal Government Service Management Office, and represented by Dou Beijing as its legal representative. Its business scope includes the sale of building materials, steel, decorative materials, hardware, metal products, cement products, refrigeration equipment, fire-fighting equipment, construction machinery and accessories, communication equipment and devices (excluding wireless transmission equipment), kitchen utensils, bathroom utensils, computers, software and auxiliary equipment, cultural goods, sports goods, anti-corrosion and insulation materials, glass products, labor protection supplies, lighting equipment, electrical equipment, safety and automation monitoring equipment; Information technology services; Quality inspection technical services; Intelligent installation engineering services; Mechanical equipment leasing; Construction of foundation and basic engineering, pipeline engineering, steel structure engineering, road engineering, waterproofing engineering, landscaping engineering, indoor and outdoor decoration engineering; Construction labor subcontracting services. General project: Sales of building materials (except for projects that require approval according to law, business activities can only be carried out independently based on the business license). Core products: Ductile Iron Overflow Manhole Cover, Drainage Ditch,

TOP9
Shanxi Chenhui Snow Casting Industry Group Co., Ltd
Overall Score4.4 / 5
Est. Date2023-01-11
Registered Capital200000K CNY

Shanxi Chenhui Snowball Casting Industry Group Co., Ltd., with its registered address located 300 meters east of Nanmajiang Village, Nancun Town, Zezhou County, Jincheng City, Shanxi Province, is registered with the Zezhou County Market Supervision Administration Bureau and represented by Yao Jianjun. Its business scope includes general projects such as black metal casting; Manufacturing of metal materials; Sealing component manufacturing; Nonferrous metal casting; Rolling and processing of non-ferrous metals; Rubber product manufacturing; Stone processing for construction; Manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); General equipment manufacturing (excluding special equipment manufacturing); Sales of metal products; Sales of metal materials; Sales of valves and plugs; Sales of metal wire ropes and their products; Sales of seals; Sales of casting machinery; Sales of rubber products; Sales of mechanical equipment; Sales of metal structures; Import and export of goods. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Road freight transportation (excluding dangerous goods). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.). Core products: Ductile Iron Overflow Manhole Cover, Ductile Iron Water Supply Pipe, Ductile Iron Drainage Pipe

TOP10
Shaanxi Shunjiahe Trading Co., Ltd
Overall Score4.4 / 5
Est. Date2021-02-02
Registered Capital10000K CNY

Shaanxi Shunjiahe Trading Co., Ltd., with its registered address at No. 9, Building 3, 12th Street, Hardware and Electrical B Zone, South China City, International Port Zone, Xi'an City, Shaanxi Province, is registered with the Chanba International Port Branch (Port Area) of Xi'an Municipal Administration for Market Regulation. The legal representative is Zhang Shuning, and its business scope includes general projects such as sales of building materials; Sales of refrigeration and air conditioning equipment; Sales of firefighting equipment; Sales of building waterproofing membrane products; Sales of power facilities and equipment; Sales of electrical instruments and meters; Sales of metal fittings for construction; Sales of building decoration materials; Trade brokers. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law). Core products: Ductile Iron Overflow Manhole Cover, , Valve

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Hebei Bangzhu Building Materials Co., Ltd2021-05-24Ductile Iron Overflow Manhole Cover, Power Box Culvert, Inspection Chamber3000K CNYSupported
Yunnan Baoxiang Engineering Materials Co., Ltd2023-04-12Ductile Iron Overflow Manhole Cover, Carbon Corrugated Pipe, Pe Pipe11000K CNYSupported
Shandong Zongxi Metal Products Co., Ltd2026-03-13Ductile Iron Overflow Manhole Cover, Manhole Cover, Fine-Toothed Comb5000K CNYSupported
Foshan Cangsheng Steel Trading Co., Ltd2018-12-25Ductile Iron Overflow Manhole Cover, Manhole Cover, Galvanized Round Pipe2000K CNYSupported
Shandong Yihang Metal Manufacturing Co., Ltd2022-04-12Ductile Iron Overflow Manhole Cover, , Bridge And River Landscape Guardrail5000K CNYNot Supported
Shandong Xinjitong Metal Materials Co., Ltd2022-07-08Ductile Iron Overflow Manhole Cover, Heavy Duty Ductile Iron Sleeve Grate3000K CNYNot Supported
Shandong Xinzhuyuan Metal Products Co., Ltd2023-02-07Ductile Iron Overflow Manhole Cover, Ductile Iron Grate, Cast Iron Profiles6000K CNYSupported
Xuzhou Jingtong Building Materials Co., Ltd2019-10-11Ductile Iron Overflow Manhole Cover, Drainage Ditch, 5000K CNYNot Supported
Shanxi Chenhui Snow Casting Industry Group Co., Ltd2023-01-11Ductile Iron Overflow Manhole Cover, Ductile Iron Water Supply Pipe, Ductile Iron Drainage Pipe200000K CNYNot Supported
Shaanxi Shunjiahe Trading Co., Ltd2021-02-02Ductile Iron Overflow Manhole Cover, , Valve10000K CNYNot Supported

Purchasing Guide

Based on real user feedback, we provide the following suggestions:

  • For procurement requirements that require the use of ductile iron overflow manhole covers, it is recommended to prioritize confirming key technical parameters such as load-bearing grade and diameter size to ensure compatibility with the actual load requirements of municipal drainage or industrial facilities.
  • Ductile iron overflow manhole covers are suitable for high-frequency traffic areas such as urban roads and factory drainage. When purchasing, the applicability of different scenarios can be evaluated based on anti slip pattern design, corrosion resistance, and other characteristics.
  • When selecting suppliers, priority should be given to product matching, business qualifications, enterprise activity, industry performance, and enterprises with industry data support or platform statistical information to balance supply stability and long-term cooperation potential.
  • In areas with high drainage demand during the rainy season, it is recommended to pay attention to the design specifications and drainage efficiency of the overflow holes on manhole covers to avoid water accumulation problems caused by unreasonable design.

Knowledge Base

Q

Overflow ductile iron manhole covers play an important role in urban construction, road engineering, and other fields, and the choice of material directly affects the performance, service life, and safety of the manhole covers. The following will introduce how to choose the material of overflow ductile iron manhole cover from multiple aspects. Understand the material characteristics of ductile iron Ductile iron is a type of iron with high strength, high toughness, and good corrosion resistance

Q

This article focuses on the selection of square overflow manhole covers made of ductile iron and introduces many key points. Including understanding material properties and paying attention to metallographic structure; Ensure accurate matching of dimensions with the wellhead; Select the appropriate carrying capacity level based on the usage scenario; Check the structural design, pay attention to drainage and anti slip, etc; Consider manufacturing process and anti-theft performance; Choose a reputable supplier. Only by considering multiple factors can high-quality manhole covers be selected.

Q

Ductile iron overflow manhole covers are mainly used for drainage systems in various public places such as urban roads, highways, parking lots, and squares. Its main uses are reflected in the following aspects: Firstly, in terms of drainage, it can effectively collect and discharge rainwater, sewage, etc., ensuring the smooth operation of the drainage system. Especially in severe weather conditions such as rainstorm, it can quickly remove a large amount of water

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs