Updated Aug 5, 2026 · Public platform & industry data

Aug 5, 2026 Updated

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2026 Top 10 Closed Bridge Frame Manufacturers in China

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Top-rated Closed Bridge Frame suppliers, How to choose a Closed Bridge Frame manufacturer, Best Closed Bridge Frame companies in China

The top 10 Closed Bridge Frame manufacturers in China for 2026 are: Langfang Wanbo Cable Tray Co., Ltd, Sichuan Chuanmei Electrical Equipment Co., Ltd, Shandong Tongyuan Electric Power Equipment Co., Ltd, Shandong Jiayuan Electrical Equipment Co., Ltd, Shandong Jiayang Electrical Equipment Co., Ltd, Shandong Alto Sen Electrical Equipment Co., Ltd, Shandong Chengrui Electric Power Equipment Co., Ltd, Shandong Pengda Changye Electrical Equipment Co., Ltd, Langfang Gaoxin Metal Products Co., Ltd, Chengdu Interstellar Electrical Equipment 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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Langfang Wanbo Cable Tray Co., Ltd
Overall Score4.9 / 5
Est. Date2014-03-19
Registered Capital10000K CNY

Langfang Wanbo Cable Tray Co., Ltd., with its registered address in Lucheng Village, Xinzhen Town, Wen'an County, Langfang City, Hebei Province, is registered with the Market Supervision Administration of Wen'an County, Langfang City. The legal representative is Yu Qian, and its business scope includes general projects such as metal structure manufacturing; Sales of metal structures; Manufacturing of electrical accessories; Sales of electrical accessories; Manufacturing of metal fittings for construction; Sales of metal fittings for construction; Manufacturing of power facilities and equipment; Sales of power facilities and equipment; Sales of metal materials; Import and export of goods. (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: Closed Bridge Frame, Seismic Bracing, Cable Tray

Top 2
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Sichuan Chuanmei Electrical Equipment Co., Ltd
Overall Score4.8 / 5
Est. Date2022-04-02
Registered Capital20220K CNY

Sichuan Chuanmei Electrical Equipment Co., Ltd., with its registered address at No. 63, Lixingzhijia D District, Chongzhou Economic Development Zone, Chengdu City, Sichuan Province, is registered with the Chongzhou Market Supervision Administration Bureau and represented by Yin Song as the legal representative. Its business scope includes licensed projects such as construction professional operations; Construction project construction; Installation, maintenance, and testing of power transmission, supply, and receiving facilities. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments. Specific business projects shall be subject to the approval documents or licenses of relevant departments.) General projects: Manufacturing of power transmission and distribution and control equipment; Manufacturing of mechanical and electrical equipment; Manufacturing of power facilities and equipment; Sales of mechanical and electrical equipment; Software development; Sales of electrical equipment; Manufacturing of general components; Manufacturing of hardware products; Manufacturing of metal materials; Research and development of distribution switch control equipment; Sales of distribution switch control equipment; Manufacturing of distribution switch control equipment; Sales of plastic products; Sales of metal materials; Mechanical equipment research and development; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of building materials; Mold manufacturing; Mold sales; Manufacturing of metal products for safety and firefighting purposes; Electronic product sales; Sales of valves and plugs; Operation of wires and cables; Sales of firefighting equipment; Sales of metal products; Wood sales; Sales of building waterproofing membrane products; Sales of rubber products; Research and development of metal products; Sales of power electronic components. (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: Closed Bridge Frame, Poured Type Bus Duct, High Voltage Bus Duct

Top 3
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Shandong Tongyuan Electric Power Equipment Co., Ltd
Overall Score4.8 / 5
Est. Date2023-11-29
Registered Capital15180K CNY

Shandong Tongyuan Power Equipment Co., Ltd., with its registered address at No. 173 Wangxing 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 Hu Biao, and its business scope includes general projects such as manufacturing of power electronic components; Manufacturing of power facilities and equipment; Manufacturing of metal materials; Manufacturing of hardware products; Sales of power facilities and equipment; Sales of new energy original equipment; Operation of wires and cables; Retail of electronic components; Sales of mechanical and electrical equipment; Sales of power electronic components; Sales of distribution switch control equipment; Sales of metal materials; Sales of mechanical equipment; Installation services for ordinary mechanical 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: Closed Bridge Frame, Fireproof Wiring System, Cable Tray

TOP4
Shandong Jiayuan Electrical Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2016-06-07
Registered Capital36000K CNY

Shandong Jiayuan Electrical Equipment Co., Ltd., with its registered address at Workshop 2, No. 19 Jingyi Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province (Liaocheng Hanghang Can Making Company), registered with the Market Supervision Administration of Dongchangfu District, Liaocheng City, and represented by Li Xianqiang as its legal representative. Its business scope includes general projects such as sales of electrical equipment; Sales of power facilities and equipment; Operation of wires and cables; Sales of power electronic components; Electronic product sales; Sales of communication equipment; Sales of electronic components and electromechanical equipment; Sales of lighting fixtures; Sales of semiconductor lighting devices; Sales of household appliances; Sales of instruments and meters; Sales of refrigeration and air conditioning equipment; Wholesale of hardware products; Retail of hardware products; Manufacturing of metal structures; Sales of metal structures; Manufacturing of mechanical and electrical equipment; Industrial robot manufacturing; Manufacturing of power facilities and equipment; Sales of electrical accessories; Fiber optic cable sales; Fiber optic sales; Sales of metal products; Sales of fans and blowers; Internet sales (except for the sale of goods that need to be licensed); Electrical equipment repair; Sales of mechanical and electrical equipment; Maintenance of transportation facilities; Sales of signs for transportation and public management; Sales of electrical signal equipment devices. (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: Closed Bridge Frame, Aluminum Alloy Cable Tray, Cable Tray

TOP5
Shandong Jiayang Electrical Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2018-10-23
Registered Capital51880K CNY

Shandong Jiayang Electrical Equipment Co., Ltd., registered at Workshop 1, East China Bridge Production Base, No. 16 North Jingsi Road, Liuyuan Office, Dongchangfu District, Liaocheng City, Shandong Province, registered with the Market Supervision and Administration Bureau of Dongchangfu District, Liaocheng City, with Pang Fumin as the legal representative. Its business scope includes the sales and installation of wires and cables, distribution boxes, electrical equipment, instruments and meters, transformers, cable trays, and lighting fixtures; Sales of hardware and electrical equipment, steel, and metal materials (excluding those restricted or prohibited by the state for company operations); Processing and sales of cable trays. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Hot Dip Galvanized Bridge Frame, Energy Saving Molded Bridge Frame

TOP6
Shandong Alto Sen Electrical Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2021-12-14
Registered Capital3000K CNY

Shandong Alto Sen Electrical Equipment Co., Ltd., registered at Room 101, Office Building, No. 16 Weisi Road, Fenghuang Industrial Park, Liuyuan Street, Dongchangfu District, Liaocheng City, Shandong Province (within the premises of Huayao Metal Technology Co., Ltd.), registered with the Market Supervision and Administration Bureau of Dongchangfu District, Liaocheng City, with Chen Linan as the legal representative. Its business scope includes general projects: sales of electrical equipment; Electronic product sales; Operation of wires and cables; Sales of instruments and meters; Sales of communication equipment; Sales of metal structures; Sales of mechanical and electrical equipment; Sales of lighting fixtures; Sales of metal materials; Wholesale of hardware products; Retail of hardware products; Manufacturing of metal structures; Manufacturing of mechanical and electrical equipment; Manufacturing of transformers, rectifiers, and inductors; Manufacturing 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: Closed Bridge Frame, Fireproof Cable Tray, Hot Dip Galvanized Bridge Frame

TOP7
Shandong Chengrui Electric Power Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2022-11-17
Registered Capital15000K CNY

Shandong Chengrui Electric Power Equipment Co., Ltd. is located at No. 58 Sanghai Village, Jiangguantun Street, Liaocheng Economic and Technological Development Zone, Shandong Province. It was established on November 17, 2022, with the registration authority of Liaocheng Economic and Technological Development Zone Market Supervision Administration and the legal representative being Zhu Hongjian. Core products: Closed Bridge Frame, Metal Wire Trough, Cable Tray

TOP8
Shandong Pengda Changye Electrical Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2020-05-19
Registered Capital5000K CNY

Shandong Pengda Changye Electrical Equipment Co., Ltd., with its registered address located 500 meters north of Wangcun Road in the middle section of Liangba Road, Liangshui Town, Dongchangfu District, Liaocheng City, Shandong Province, is registered with the Market Supervision and Administration Bureau of Dongchangfu District, Liaocheng City. The legal representative is Li Qian, and the business scope includes general projects: sales of electrical equipment; Operation of wires and cables; Sales of household appliances; Sales of refrigeration and air conditioning equipment; Sales of communication equipment; Import and export of goods; Sales of metal structures; Sales of mechanical and electrical equipment; Sales of instruments and meters; Sales of electrical accessories; Sales of metal materials; Sales of non-metallic minerals and products; Sales of steel reinforcement products for construction; Steel rolling processing; Sales of plastic products; Wholesale of hardware products; Sales of metal fittings for construction; Sales of metal products; Manufacturing of hardware products; Retail of hardware products; Manufacturing of metal structures; Manufacturing of mechanical and electrical equipment; Manufacturing of metal materials. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license) Licensed project: Manufacturing of wires and cables. (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: Closed Bridge Frame, Fireproof Cable Tray

TOP9
Langfang Gaoxin Metal Products Co., Ltd
Overall Score4.4 / 5
Est. Date2020-11-12
Registered Capital1000K CNY

Langfang Gaoxin Metal Products Co., Ltd. is registered at Sicun Village East, Xinzhen Town, Wen'an County, Langfang City, Hebei Province. The registration authority is the Market Supervision Administration of Wen'an County, Langfang City, and the legal representative is Wang Yongmei. The business scope includes metal structure manufacturing. Manufacturing of lightweight building materials (excluding prohibited projects). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Closed Bridge Frame, Hot Dip Galvanized Bridge Frame, Ladder-Type Cable Tray

TOP10
Chengdu Interstellar Electrical Equipment Co., Ltd
Overall Score4.4 / 5
Est. Date2013-04-07
Registered Capital10000K CNY

Chengdu Interstellar Electrical Equipment Co., Ltd., with its registered address at 1st Floor, Building 6, No. 666 Xiangyang Road, Qingbaijiang District, Chengdu City, is registered with the Qingbaijiang District Market Supervision and Administration Bureau. The legal representative is Wang Mingxian, and its business scope includes the production, processing, and sales of electrical equipment, cable trays, mechanical equipment and accessories, plastic products, rubber products, wires and cables, pipes, metal mesh, hardware and electrical equipment, insulation materials, fire protection equipment, building materials, and decorative materials; Construction engineering installation (operated with qualification certificate). Projects that require approval by law can only be operated after approval by relevant departments.. Core products: Closed Bridge Frame, Galvanized Cable Tray, Accessories

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Langfang Wanbo Cable Tray Co., Ltd2014-03-19Closed Bridge Frame, Seismic Bracing, Cable Tray10000K CNYNot Supported
Sichuan Chuanmei Electrical Equipment Co., Ltd2022-04-02Closed Bridge Frame, Poured Type Bus Duct, High Voltage Bus Duct20220K CNYNot Supported
Shandong Tongyuan Electric Power Equipment Co., Ltd2023-11-29Closed Bridge Frame, Fireproof Wiring System, Cable Tray15180K CNYNot Supported
Shandong Jiayuan Electrical Equipment Co., Ltd2016-06-07Closed Bridge Frame, Aluminum Alloy Cable Tray, Cable Tray36000K CNYNot Supported
Shandong Jiayang Electrical Equipment Co., Ltd2018-10-23Closed Bridge Frame, Hot Dip Galvanized Bridge Frame, Energy Saving Molded Bridge Frame51880K CNYSupported
Shandong Alto Sen Electrical Equipment Co., Ltd2021-12-14Closed Bridge Frame, Fireproof Cable Tray, Hot Dip Galvanized Bridge Frame3000K CNYSupported
Shandong Chengrui Electric Power Equipment Co., Ltd2022-11-17Closed Bridge Frame, Metal Wire Trough, Cable Tray15000K CNYSupported
Shandong Pengda Changye Electrical Equipment Co., Ltd2020-05-19Closed Bridge Frame, Fireproof Cable Tray5000K CNYSupported
Langfang Gaoxin Metal Products Co., Ltd2020-11-12Closed Bridge Frame, Hot Dip Galvanized Bridge Frame, Ladder-Type Cable Tray1000K CNYSupported
Chengdu Interstellar Electrical Equipment Co., Ltd2013-04-07Closed Bridge Frame, Galvanized Cable Tray, Accessories10000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of enclosed cable trays, it is recommended to prioritize confirming specifications such as tray width, height, and plate thickness to ensure compatibility with cable routing capacity and installation environment.
  • In scenarios with high protection requirements such as chemical engineering or data centers, the sealing performance and corrosion resistance of enclosed cable trays need to be evaluated as key technical parameters.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and enterprises with industry data support or platform statistical information.
  • In the actual procurement process of enclosed cable trays, it is recommended to compare the surface treatment processes (such as galvanizing or spraying) of the trays based on different indoor and outdoor application scenarios to meet environmental requirements.

Knowledge Base

Q

When choosing the material for enclosed cable trays, it is necessary to consider the usage environment comprehensively. In environments with strong corrosiveness, such as chemical enterprises, it is recommended to prioritize the use of corrosion-resistant materials such as stainless steel or aluminum alloy for cable trays. In general indoor environments, galvanized materials can usually meet the requirements. If there is a high requirement for fire resistance performance, fire-resistant bridge frames can be chosen.

Q

This article provides a detailed comparison of the differences between trapezoidal cable trays and enclosed cable trays in terms of structure, application scenarios, protective performance, and cost. The trapezoidal bridge adopts an open design, which has good heat dissipation but weak protection; The fully sealed structure of the enclosed bridge is dustproof and waterproof, suitable for harsh environments. There are significant differences between the two in terms of load-bearing capacity, installation method, and price, and users can choose according to their actual needs.

Q

The structural characteristics of stainless steel enclosed bridge mainly include the following aspects. It adopts a fully enclosed design, which can effectively prevent external dust, water vapor, debris, etc. from entering the interior of the cable tray, thus better protecting the cables laid inside. Structurally, it usually has a sturdy frame and side panels to provide sufficient strength and stability to withstand large weights and pressures.

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