Updated Sep 6, 2026 · Public platform & industry data

Sep 6, 2026 Updated

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2026 Top 10 Drainage Cap Manufacturers in China

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Top-rated Drainage Cap suppliers, How to choose a Drainage Cap manufacturer, Best Drainage Cap companies in China

The top 10 Drainage Cap manufacturers in China for 2026 are: Yixing Weiya Environmental Protection Packing Factory, Yixing Yilan Environmental Protection Equipment Co., Ltd, Jiangsu Nantai Environmental Protection Packing Co., Ltd, Gongyi Deke Water Purification Materials Co., Ltd, Yixing Qingxi Environmental Protection Packing Co., Ltd, Jingxian Kunduo Rubber Products Co., Ltd, Chengdu Chuantai Juhao Valve Co., Ltd, Jiangsu Jixiang Environmental Protection Technology Co., Ltd, Henan Longzheng Water Treatment Materials Co., Ltd, Beijing Weiyuan Environmental Protection Technology 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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Yixing Weiya Environmental Protection Packing Factory
Overall Score4.9 / 5
Est. Date2010-03-30
Registered Capital5000K CNY

Yixing Weiya Environmental Protection Packing Factory, with its registered address at No. 278 Ezhou South Road, Heqiao Town, Yixing City, registered with the Yixing Administrative Approval Bureau, and represented by Yang Junwei as its legal representative. Its business scope includes the manufacturing and sales of environmental protection fillers and water treatment equipment; Sales of environmental protection equipment and accessories; Design and construction of environmental protection projects. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Drainage Cap, Elastic Filler, Short Stem Filter Head

Top 2
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Yixing Yilan Environmental Protection Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2009-05-11
Registered Capital5800K CNY

Yixing Yilan Environmental Protection Equipment Co., Ltd. is located in the Industrial Concentration Zone of Gaocheng Town, Yixing City. The registration authority is the Yixing Administrative Approval Bureau, and the legal representative is Lu Junrong. Its business scope includes the manufacturing and sales of environmental pollution prevention and control equipment, fiberglass products, pipe valves, environmental protection fillers, environmental protection equipment and accessories. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Drainage Cap, Fine Bubble Diffuser , Mechanical Grating

Top 3
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Jiangsu Nantai Environmental Protection Packing Co., Ltd
Overall Score4.7 / 5
Est. Date2010-05-25
Registered Capital10600K CNY

Jiangsu Nantai Environmental Protection Filling Co., Ltd., registered at No. 18 Zhongqiao Road, Gaocheng Town, Yixing City, with the registration authority of Yixing Data Bureau and the legal representative of Du Shunming, has a business scope including general projects: sales of plastic products; Manufacturing of plastic products; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Sales of mechanical equipment; General equipment manufacturing (excluding special equipment manufacturing); Ordinary mechanical equipment installation services (except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law). Core products: Drainage Cap, Biochemical Treatment Of Industrial Wastewater, Single Pore Membrane Aeration Head

TOP4
Gongyi Deke Water Purification Materials Co., Ltd
Overall Score4.6 / 5
Est. Date2018-03-14
Registered Capital8000K CNY

Gongyi Deke Water Purification Materials Co., Ltd., with its registered address in Xipo Village, Shecun Town, Gongyi City, is registered with the Gongyi Market Supervision Administration Bureau. The legal representative is Yang Xiaonan, and its business scope includes general projects: manufacturing of specialized chemical products (excluding hazardous chemicals); Manufacturing of ecological environment materials; Manufacturing of specialized equipment for environmental protection; Sales of specialized chemical products (excluding hazardous chemicals); Sales of specialized equipment for environmental protection; Fertilizer sales; Air pollution control; Water pollution control; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Environmental consulting services; Technology import and export; Import and export of goods (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Drainage Cap, Ball Ring Packing, Ceramic Filter Material

TOP5
Yixing Qingxi Environmental Protection Packing Co., Ltd
Overall Score4.6 / 5
Est. Date1998-07-03
Registered Capital12000K CNY

Yixing Qingxi Environmental Protection Filling Co., Ltd., registered in Gaocheng Town Industrial Concentration Zone, Yixing City, with the registration authority of Yixing Data Bureau and the legal representative of Zhang Chuanliang, operates licensed projects including power generation, transmission, and power supply (distribution) (projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to approval results). General project: sales of sealing filling materials; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Manufacturing of plastic products; Sales of plastic products; Sales of specialized chemical products (excluding hazardous chemicals); Sales of non-metallic minerals and 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: Drainage Cap, Dynamic Aerator, Elastic Filler

TOP6
Jingxian Kunduo Rubber Products Co., Ltd
Overall Score4.5 / 5
Est. Date2022-12-28
Registered Capital2000K CNY

Jingxian Kunduo Rubber Products Co., Ltd. is registered at No. 5 Ningbei Road, Beixizhuang Village, Liufu Township, Jingxian County, Hengshui City, Hebei Province. The registration authority is Jingxian Market Supervision Administration Bureau, and the legal representative is Feng Yongtao. The business scope includes general projects: production and sales of rubber products, plastic products, nylon PTFE products, polyurethane products, polymer polyethylene, rubber seals, filter cartridges, filter materials, metal products, metal hoses, high-pressure rubber hoses, metal corrugated hoses, compensators, joints, corrugated pipes, expansion joints, mechanical parts, mechanical processing, water stop materials, water stop belts, and water stop strips. (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: Drainage Cap, Shield Tunneling Machine Suction Cup Sealing Strip, Silicone Tube (Inflatable Sealing Strip)

TOP7
Chengdu Chuantai Juhao Valve Co., Ltd
Overall Score4.5 / 5
Est. Date2015-10-19
Registered Capital6800K CNY

Chengdu Chuantai Juhao Valve Co., Ltd., with its registered address at No. 18A, 1st Floor, Building 12, No. 222 Jiaoda Road, Jinniu District, Chengdu, is registered with the Jinniu District Market Supervision and Administration Bureau. The legal representative is Wang Hengyuan, and its business scope includes production, processing (limited to branch offices operating at other locations), wholesale, and retail of valves, pipe fittings, hardware products, building materials, steel, fire-fighting equipment, plastic products, metal materials, and metal products.. Core products: Drainage Cap, Rail Crossing Pipe, Bellows

TOP8
Jiangsu Jixiang Environmental Protection Technology Co., Ltd
Overall Score4.5 / 5
Est. Date2012-08-02
Registered Capital38000K CNY

Jiangsu Jixiang Environmental Protection Technology Co., Ltd., with its registered address at No. 2 Huahui Road, Industrial Park, Gaocheng Town, Yixing City, is registered with the Yixing Administrative Approval Bureau and represented by Shao Youle as its legal representative. Its business scope includes licensed projects such as construction projects; Construction project design; Construction professional operations (projects that require approval by law can only be carried out after approval by relevant departments, and specific business projects are subject to the approval results) General projects: technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Industrial design services; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Manufacturing of household waste treatment equipment; Sales of household waste treatment equipment; General equipment manufacturing (excluding special equipment manufacturing); Sales of mechanical equipment; Manufacturing of insulation and soundproofing materials; Sales of insulation and soundproofing materials; Manufacturing of metal structures; Sales of metal structures; Manufacturing of electrical accessories; Sales of electrical accessories; Manufacturing of hardware products; Wholesale of hardware products; Retail of hardware products; Manufacturing of architectural decoration, plumbing components, and other metal products for building use; Manufacturing of metal products for safety and firefighting purposes; Manufacturing of metal chains and other metal products; Sales of metal products; Manufacturing of plastic products; Sales of plastic products; Manufacturing of gas and liquid separation and purification equipment; Sales of gas and liquid separation and purification equipment; Installation services for ordinary mechanical equipment; Sales of non-metallic minerals and products; Sales of glass fiber reinforced plastic products; Sales of specialized chemical products (excluding hazardous chemicals); Sales of sealing fillers; Sales of ecological environment materials; Sales of instruments and meters; Import and export of goods; Technology import and export; Import and export agency (except for projects that require approval according to law, conducting business activities independently based on the business license in accordance with the law). Core products: Drainage Cap, Releaser, Dosing

TOP9
Henan Longzheng Water Treatment Materials Co., Ltd
Overall Score4.4 / 5
Est. Date2017-02-09
Registered Capital5000K CNY

Henan Longzheng Water Treatment Materials Co., Ltd., with its registered address in Shijing Village, Jiajinkou Town, Gongyi City, is registered with the Gongyi Market Supervision and Administration Bureau. The legal representative is Wei Zhengguang, and its business scope includes the production of fiber balls and fiber bundles; Distribution: Fiber balls, fiber bundles, activated carbon, anthracite filter media, magnetite, sponge iron, polyacrylamide, polyaluminum chloride, water purification fillers, honeycomb inclined tubes, diamond sand, zeolite, vermiculite, fruit shell filter media, quartz sand, refractory materials, chemical products (excluding dangerous goods); Sales and after-sales service of water purification equipment and accessories.. Core products: Drainage Cap, Powdered Activated Carbon, Honeycomb Inclined Tube

TOP10
Beijing Weiyuan Environmental Protection Technology Co., Ltd
Overall Score4.4 / 5
Est. Date2017-11-16
Registered Capital10000K CNY

Beijing Weiyuan Environmental Protection Technology Co., Ltd., with its registered address at Room 203, South Building, No.1 Xingqiao Street, Qiaozi Town, Huairou District, Beijing, is registered with the Huairou District Market Supervision Administration of Beijing. The legal representative is Sun Songfeng, and the business scope includes general projects such as technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of chemical products (excluding licensed chemical products); Sales of mechanical equipment; Water pollution control; Sales of non-metallic minerals and products; Manufacturing of non-metallic mineral products; Manufacturing of ecological environment materials; Sales of ecological environment materials; Air pollution control; Sales of plastic products; Sales of metal products; Sales of specialized equipment for environmental protection; External contracting projects; Labor services (excluding labor dispatch); Specialized equipment repair; Installation services for ordinary mechanical equipment; General equipment repair. (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) Licensed project: construction project construction; Construction labor subcontracting. (For projects that require approval according to 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 issued by relevant departments.) (Business activities that are prohibited or restricted by national and local industrial policies shall not be engaged in.). Core products: Drainage Cap, Water Treatment Chemicals, Water Treatment Filter Media

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Yixing Weiya Environmental Protection Packing Factory2010-03-30Drainage Cap, Elastic Filler, Short Stem Filter Head5000K CNYNot Supported
Yixing Yilan Environmental Protection Equipment Co., Ltd2009-05-11Drainage Cap, Fine Bubble Diffuser , Mechanical Grating5800K CNYSupported
Jiangsu Nantai Environmental Protection Packing Co., Ltd2010-05-25Drainage Cap, Biochemical Treatment Of Industrial Wastewater, Single Pore Membrane Aeration Head10600K CNYSupported
Gongyi Deke Water Purification Materials Co., Ltd2018-03-14Drainage Cap, Ball Ring Packing, Ceramic Filter Material8000K CNYSupported
Yixing Qingxi Environmental Protection Packing Co., Ltd1998-07-03Drainage Cap, Dynamic Aerator, Elastic Filler12000K CNYNot Supported
Jingxian Kunduo Rubber Products Co., Ltd2022-12-28Drainage Cap, Shield Tunneling Machine Suction Cup Sealing Strip, Silicone Tube (Inflatable Sealing Strip)2000K CNYSupported
Chengdu Chuantai Juhao Valve Co., Ltd2015-10-19Drainage Cap, Rail Crossing Pipe, Bellows6800K CNYSupported
Jiangsu Jixiang Environmental Protection Technology Co., Ltd2012-08-02Drainage Cap, Releaser, Dosing38000K CNYNot Supported
Henan Longzheng Water Treatment Materials Co., Ltd2017-02-09Drainage Cap, Powdered Activated Carbon, Honeycomb Inclined Tube5000K CNYNot Supported
Beijing Weiyuan Environmental Protection Technology Co., Ltd2017-11-16Drainage Cap, Water Treatment Chemicals, Water Treatment Filter Media10000K CNYSupported

Purchasing Guide

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

  • For procurement requirements that require the use of drainage caps, it is recommended to prioritize confirming key technical parameters such as aperture size, material corrosion resistance, and pressure bearing capacity to ensure compatibility with the pipeline system.
  • In industrial wastewater treatment or building drainage systems, the filtration accuracy and anti clogging performance of drainage caps may require targeted screening due to differences in scenarios, such as the need to strengthen structural design in high suspended solids environments.
  • When selecting suppliers, reference can be made to product compatibility, business qualifications, enterprise activity, industry performance, and platform statistical information. These indicators can assist in evaluating supply stability and product reliability.
  • If the drainage cap is used in the chemical industry, additional attention should be paid to the adaptability of the material to acidic and alkaline media, and it is recommended to conduct a horizontal comparison with the industry data support of the supplier.

Knowledge Base

Q

In projects such as water treatment, artificial wetlands, rainwater storage, and infiltration systems, the bottom water collection structure often faces a common technical challenge of how to efficiently discharge treated clean water while preventing upper layer fillers (such as quartz sand, gravel, ceramic particles, or biological carriers) from entering the water collection pipeline with water flow. Without effective interception measures, fine particle media may cause pipeline blockage, pump wear, and even lead to

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