Updated Sep 15, 2026 · Public platform & industry data

Sep 15, 2026 Updated

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2026 Top 10 Spherical Cast Iron Manhole Cover Manufacturers in China

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

The top 10 Spherical Cast Iron 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: Spherical Cast Iron Manhole Cover, Buried Sewage Shaft, Large Caliber Pipe Jacking

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: Spherical Cast Iron Manhole Cover, Pe Drainage Ditch, Perforated Corrugated 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: Spherical Cast Iron 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: Spherical Cast Iron Manhole Cover, Manhole Cover, Stainless Steel Plate

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: Spherical Cast Iron Manhole Cover, Manhole Cover,

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: Spherical Cast Iron Manhole Cover, Double Layer Manhole Cover, Ductile Iron Composite 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: Spherical Cast Iron Manhole Cover, Ductile Iron Grate, Radiation Resistant Lead Manhole Cover

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: Spherical Cast Iron Manhole Cover, Electric Conduit, Protective Casing

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: Spherical Cast Iron Manhole Cover, Ductile Iron Water Supply Pipe, Flexible Cast Iron Drainage Pipe

TOP10
Shaanxi Shunjiahe Trading Co., Ltd
Overall Score4.3 / 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: Spherical Cast Iron Manhole Cover, Hmpp Winding Structure Wall Pipe B-Type Pipe, Pert Underfloor Heating Pipe

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Hebei Bangzhu Building Materials Co., Ltd2021-05-24Spherical Cast Iron Manhole Cover, Buried Sewage Shaft, Large Caliber Pipe Jacking3000K CNYSupported
Yunnan Baoxiang Engineering Materials Co., Ltd2023-04-12Spherical Cast Iron Manhole Cover, Pe Drainage Ditch, Perforated Corrugated Pipe11000K CNYSupported
Shandong Zongxi Metal Products Co., Ltd2026-03-13Spherical Cast Iron Manhole Cover, Manhole Cover, Fine-Toothed Comb5000K CNYSupported
Foshan Cangsheng Steel Trading Co., Ltd2018-12-25Spherical Cast Iron Manhole Cover, Manhole Cover, Stainless Steel Plate2000K CNYSupported
Shandong Yihang Metal Manufacturing Co., Ltd2022-04-12Spherical Cast Iron Manhole Cover, Manhole Cover, 5000K CNYNot Supported
Shandong Xinjitong Metal Materials Co., Ltd2022-07-08Spherical Cast Iron Manhole Cover, Double Layer Manhole Cover, Ductile Iron Composite Grate3000K CNYNot Supported
Shandong Xinzhuyuan Metal Products Co., Ltd2023-02-07Spherical Cast Iron Manhole Cover, Ductile Iron Grate, Radiation Resistant Lead Manhole Cover6000K CNYSupported
Xuzhou Jingtong Building Materials Co., Ltd2019-10-11Spherical Cast Iron Manhole Cover, Electric Conduit, Protective Casing5000K CNYNot Supported
Shanxi Chenhui Snow Casting Industry Group Co., Ltd2023-01-11Spherical Cast Iron Manhole Cover, Ductile Iron Water Supply Pipe, Flexible Cast Iron Drainage Pipe200000K CNYNot Supported
Shaanxi Shunjiahe Trading Co., Ltd2021-02-02Spherical Cast Iron Manhole Cover, Hmpp Winding Structure Wall Pipe B-Type Pipe, Pert Underfloor Heating Pipe10000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of spherical cast iron manhole covers, it is recommended to prioritize confirming key technical parameters such as bearing grade and diameter size. There are usually differences in the compressive requirements for manhole covers between municipal roads and underground pipe networks in the factory area.
  • When selecting suppliers, reference can be made to indicators such as product compatibility, business qualifications, enterprise activity, industry performance, and industry data support. Such enterprises can usually provide more stable supply capabilities and compliant products.
  • The ductile iron manhole cover is suitable for high traffic areas or corrosive environments. When purchasing, attention should be paid to the material report and anti slip design details of the ductile iron.
  • In humid and rainy areas or special scenarios such as chemical parks, it is recommended to prioritize the selection of products with anti-corrosion coating processes that meet the standards, and to comprehensively evaluate them based on the industry data support of suppliers.

Knowledge Base

Q

The optional special coatings for ductile iron manhole covers mainly include: Epoxy resin coating: Known for its excellent corrosion resistance and good adhesion, it can effectively isolate moisture, oxygen, and other corrosive substances, extending its service life by 12. Polysilicone coating: Excellent anti-corrosion performance, with super strong radiation resistance, weather resistance, and pollution resistance, very suitable for ball

Q

700 * 800 ductile iron round manhole cover refers to a manhole cover with a diameter of approximately 700 millimeters and an overall thickness or installation space height of approximately 800 millimeters. This size design is designed to accommodate wellheads of specific width or depth, ensuring that the manhole cover effectively covers the wellhead to prevent personnel and foreign objects from falling, while also withstanding the daily traffic pressure of vehicles and pedestrians to ensure public safety

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