Updated Oct 6, 2026 · Public platform & industry data

Oct 6, 2026 Updated

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2026 Top 10 Directly Buried Prefabricated Insulation Pipe Manufacturers in China

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Top-rated Directly Buried Prefabricated Insulation Pipe suppliers, How to choose a Directly Buried Prefabricated Insulation Pipe manufacturer, Best Directly Buried Prefabricated Insulation Pipe companies in China

The top 10 Directly Buried Prefabricated Insulation Pipe manufacturers in China for 2026 are: Langfang Ouliang Thermal Insulation Materials Co., Ltd, Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd, Cangzhou Huadun Pipeline Technology Co., Ltd, Cangzhou Jianghong Pipeline Equipment Co., Ltd, Cangzhou Fuou Pipeline Equipment Co., Ltd, Cangzhou Guangyi Pipeline Manufacturing Co., Ltd, Shandong Shengbao Pipeline Technology Co., Ltd, Cangzhou Tuocheng Pipeline Equipment Co., Ltd, Cangzhou Xingsong Anti corrosion and Insulation Engineering Co., Ltd, Xinlong Risheng Thermal Insulation and Anti corrosion Engineering Co., Ltd. in Dacheng County. 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 Ouliang Thermal Insulation Materials Co., Ltd
Overall Score4.9 / 5
Est. Date2020-12-23
Registered Capital500K CNY

Langfang Ouliang Thermal Insulation Materials Co., Ltd., with its registered address in Da Shangtun Town, Dacheng County, Langfang City, Hebei Province, is registered with the Market Supervision Administration of Dacheng County, Langfang City. The legal representative is Xu Falong, and its business scope includes the manufacturing and sales of thermal insulation and sound insulation materials, as well as the manufacturing and sales of plastic processing equipment; Sales of chemical products (excluding licensed chemical products), sales of metal materials, sales of building materials, and sales of plastic products; Construction project construction. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Prefabricated Insulation Pipe, Overhead Galvanized Iron Sheet Insulation Pipe, Polyurethane Insulation Pipe

Top 2
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Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd
Overall Score4.8 / 5
Est. Date2009-03-20
Registered Capital51000K CNY

Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd., with its registered address at No. 3, West of Zhengyuan Street, Zhenggang Park, Economic Development Zone, Yanshan County, Cangzhou City, Hebei Province, is registered with the Market Supervision Administration of Yanshan County. The legal representative is Jia Zhenfeng, and its business scope includes general projects such as production and sales of anti-corrosion and insulation engineering; Steel pipes, insulation materials, pipelines and pipeline fittings, pipes, plates, and steel materials. (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: Directly Buried Prefabricated Insulation Pipe, Fire Protection Coated Steel Pipe, Epoxy Coal Tar Anti-Corrosion Steel Pipe

Top 3
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Cangzhou Huadun Pipeline Technology Co., Ltd
Overall Score4.8 / 5
Est. Date2021-05-18
Registered Capital100000K CNY

Cangzhou Huadun Pipeline Technology Co., Ltd. is located in the economic development zone of Yanshan County, Cangzhou City, Hebei Province, on the south side of Puyang Road East Section. It was established on May 18, 2021, with the registration authority of Yanshan County Market Supervision Administration and the legal representative being Liu Zhenhong. Core products: Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, 3Pe Anti-Corrosion Steel Pipe

TOP4
Cangzhou Jianghong Pipeline Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2020-05-15
Registered Capital23000K CNY

Cangzhou Jianghong Pipeline Equipment Co., Ltd., with its registered address in Jiajin Village, Mengdian Township, Yanshan County, is registered with the Market Supervision Administration of Yanshan County. The legal representative is Li Ruilan, and its business scope includes spiral steel pipes, straight seam steel pipes, seamless steel pipes, petroleum casings, anti-corrosion steel pipes, polyurethane insulation steel pipes, 3pe anti-corrosion steel pipes, TPEP anti-corrosion steel pipes, epoxy powder steel pipes, coated composite pipes, non-toxic drinking water steel pipes, hot-dip plastic cable threading protection pipes, fire coated steel pipes, resin composite steel pipes for coal mines, pipeline pipes, insulation pipes, alloy pipes, stainless steel fittings, anti-corrosion insulation materials, and pipeline equipment accessories; Sales of pipes, boards, wires, power plant accessories, pipeline accessories, anti-corrosion and insulation pipe fittings, pipeline construction and installation, anti-corrosion and insulation engineering construction, heating pipe network design and construction. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Prefabricated Insulation Pipe, Aluminum Alloy Lined Plastic Pipe, Steel Sleeve Steel Insulation Steel Pipe

TOP5
Cangzhou Fuou Pipeline Equipment Co., Ltd
Overall Score4.7 / 5
Est. Date2021-02-22
Registered Capital28000K CNY

Cangzhou Fuou Pipeline Equipment Co., Ltd., with its registered address in Jiajin Village, Mengdian Township, Yanshan County, is registered with the Market Supervision Administration of Yanshan County. The legal representative is Wang Zhenzhong, and its business scope includes spiral steel pipes, straight seam steel pipes, seamless steel pipes, petroleum casings, anti-corrosion steel pipes, polyurethane insulation steel pipes, 3pe anti-corrosion steel pipes, TPEP anti-corrosion steel pipes, epoxy powder steel pipes, coated composite pipes, non-toxic drinking water steel pipes, hot-dip plastic cable threading protection pipes, fire protection coated steel pipes, resin composite steel pipes for coal mines, pipeline pipes, insulation pipes, alloy pipes, stainless steel fittings, bends, elbows, heads, flanges, tees, reducers, insulation joints, power plant accessories, valves, fittings, anti-corrosion insulation materials, pipelines and more. Sales of pipeline fittings, pipes, plates, wires, anti-corrosion and insulation pipe fittings, and pipeline construction and installation. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit

TOP6
Cangzhou Guangyi Pipeline Manufacturing Co., Ltd
Overall Score4.6 / 5
Est. Date2023-03-29
Registered Capital50000K CNY

Cangzhou Guangyi Pipeline Manufacturing Co., Ltd., with its registered address in Yemaoli Village, Wangshu Town, Yanshan County, is registered with the Yanshan County Market Supervision and Administration Bureau. Its legal representative is He Kangle, and its business scope includes general projects such as building decoration, manufacturing of plumbing pipe parts and other metal products for construction; Manufacturing of metal fittings for construction; Manufacturing of metal products for safety and firefighting purposes; Metal surface treatment and heat treatment processing; Steel rolling processing; Sales of insulation materials; Sales of steel reinforcement products for construction; Sales of non-ferrous metal alloys. (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: Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, Anti-Corrosion Steel Pipe

TOP7
Shandong Shengbao Pipeline Technology Co., Ltd
Overall Score4.6 / 5
Est. Date2017-08-04
Registered Capital108160K CNY

Shandong Shengbao Pipeline Technology Co., Ltd., with its registered address located at the north of Xishou Road, Jinshan Street, Xin'an Street, Anqiu City, Weifang City, Shandong Province, is registered with the Anqiu Market Supervision Administration Bureau. The legal representative is Wang Zengfeng, and the business scope includes general projects such as metal surface treatment and heat treatment processing; Manufacturing of glass fiber reinforced plastic products; Sales of glass fiber reinforced plastic products; Manufacturing of fiberglass and related products; Sales of fiberglass and related products; Manufacturing of plastic products; Sales of plastic products; Manufacturing of metal structures; Sales of metal structures; Manufacturing of metal materials; Sales of metal products; Manufacturing of instruments and meters; Sales of instruments and meters; Instrument and meter repair; Sales of engineering plastics and synthetic resins; Manufacturing of power transmission, distribution and control equipment; Sales of intelligent power transmission and distribution and control equipment; Production of chemical products (excluding licensed chemical products); Sales of chemical products (excluding licensed chemical products); Installation services for ordinary mechanical equipment; Research and development of emerging energy technologies; Research and development of resource recycling technology; Promotion services for new material technology; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Import and export of goods; Technology import and export. (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; Manufacturing of special equipment. (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: Directly Buried Prefabricated Insulation Pipe, Fiberglass Chimney, Tpep Anti-Corrosion Steel Pipe

TOP8
Cangzhou Tuocheng Pipeline Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2017-07-25
Registered Capital18880K CNY

Cangzhou Tuocheng Pipeline Equipment Co., Ltd. is registered in Puwacheng Park, Yanshan Economic Development Zone, Hebei Province. The registration authority is the Market Supervision Administration of Yanshan County, and the legal representative is Xie Yuxin. The business scope includes the sales of steel pipes, fittings, polyurethane insulation pipes, anti-corrosion steel pipes, coated steel pipes, 3PE anti-corrosion steel pipes, TPEP anti-corrosion steel pipes, steel sleeve steel steam insulation pipes, hot-dip plastic cable threading protection pipes, epoxy coal tar anti-corrosion steel pipes, non-toxic drinking water anti-corrosion steel pipes, resin composite steel pipes for coal mines, stainless steel pipes, pipeline pipes, alloy pipes, anti-corrosion insulation materials, pipes and pipeline accessories, elbows, flanges, plates, wires, profiles, power plant accessories, valves and pressure vessels, as well as the construction and installation of pipelines and anti-corrosion and insulation engineering. Design and construction of heating pipeline network. (For projects that require approval according to law, business activities can only be carried out after approval by relevant departments; for general business projects, business activities can be carried out independently according to law). Core products: Directly Buried Prefabricated Insulation Pipe, Seamless Steel Pipe, Spiral Steel Pipe

TOP9
Cangzhou Xingsong Anti corrosion and Insulation Engineering Co., Ltd
Overall Score4.4 / 5
Est. Date2023-07-28
Registered Capital10000K CNY

Cangzhou Xingsong Anti corrosion and Insulation Engineering Co., Ltd., registered at Room 401, 4th floor, Hebei Xingsong Pipeline Technology Co., Ltd., Wulong Shuanggao Industrial Park, Cangxian County, Cangzhou City, Hebei Province, China. The registered authority is Cangxian Market Supervision Administration Bureau, and the legal representative is Liu Enxuan. The business scope includes general projects: sales of anti-corrosion materials; Sales of insulation materials; External contracting projects; General equipment manufacturing (excluding special equipment manufacturing); Manufacturing of metal materials; Mechanical parts and component processing; Sales of mechanical parts and components; Sales of pipeline transportation equipment; Sales of metal materials; Sales of metal structures; Sales of plastic products; Retail of hardware products; Manufacturing of hardware products; Wholesale of hardware products; Sales of valves and plugs; Sales of seals; Sales of metallurgical specialized equipment; Sales of metal tools; 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: Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Pipe, Hot-Dip Plastic Coated Steel Pipe

TOP10
Xinlong Risheng Thermal Insulation and Anti corrosion Engineering Co., Ltd. in Dacheng County
Overall Score4.3 / 5
Est. Date2010-04-29
Registered Capital50000K CNY

Xinlong Risheng Thermal Insulation and Anti corrosion Engineering Co., Ltd. in Dacheng County, with its registered address located in the south of Beiqingzhou Village, Dashangtun Town, Dacheng County. The registration authority is the Market Supervision Administration of Dacheng County, Langfang City, and the legal representative is Li Weitao. Its business scope includes the construction of prefabricated buried insulation pipes, steel sheathed steam insulation pipes, composite insulation pipes, and polyurethane insulation and anti-corrosion engineering; Processing and sales: polyurethane jacket tubes, plastic parts, foaming machines, spraying machines; Sales: Jacket tube granules, polyurethane equipment, polyurethane products, polyurethane composite materials and accessories, insulation materials and pipe fittings. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Prefabricated Insulation Pipe, Galvanized Iron Sheet Polyurethane Insulation Pipe, Pe Polyurethane Insulation Pipe

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Langfang Ouliang Thermal Insulation Materials Co., Ltd2020-12-23Directly Buried Prefabricated Insulation Pipe, Overhead Galvanized Iron Sheet Insulation Pipe, Polyurethane Insulation Pipe500K CNYSupported
Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd2009-03-20Directly Buried Prefabricated Insulation Pipe, Fire Protection Coated Steel Pipe, Epoxy Coal Tar Anti-Corrosion Steel Pipe51000K CNYSupported
Cangzhou Huadun Pipeline Technology Co., Ltd2021-05-18Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, 3Pe Anti-Corrosion Steel Pipe100000K CNYNot Supported
Cangzhou Jianghong Pipeline Equipment Co., Ltd2020-05-15Directly Buried Prefabricated Insulation Pipe, Aluminum Alloy Lined Plastic Pipe, Steel Sleeve Steel Insulation Steel Pipe23000K CNYSupported
Cangzhou Fuou Pipeline Equipment Co., Ltd2021-02-22Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit28000K CNYSupported
Cangzhou Guangyi Pipeline Manufacturing Co., Ltd2023-03-29Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Steel Pipe, Anti-Corrosion Steel Pipe50000K CNYNot Supported
Shandong Shengbao Pipeline Technology Co., Ltd2017-08-04Directly Buried Prefabricated Insulation Pipe, Fiberglass Chimney, Tpep Anti-Corrosion Steel Pipe108160K CNYSupported
Cangzhou Tuocheng Pipeline Equipment Co., Ltd2017-07-25Directly Buried Prefabricated Insulation Pipe, Seamless Steel Pipe, Spiral Steel Pipe18880K CNYSupported
Cangzhou Xingsong Anti corrosion and Insulation Engineering Co., Ltd2023-07-28Directly Buried Prefabricated Insulation Pipe, Plastic-Coated Pipe, Hot-Dip Plastic Coated Steel Pipe10000K CNYSupported
Xinlong Risheng Thermal Insulation and Anti corrosion Engineering Co., Ltd. in Dacheng County2010-04-29Directly Buried Prefabricated Insulation Pipe, Galvanized Iron Sheet Polyurethane Insulation Pipe, Pe Polyurethane Insulation Pipe50000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of directly buried prefabricated insulation pipes, it is recommended to prioritize checking key technical parameters such as pipe diameter, insulation layer thickness, and temperature resistance range to ensure compatibility with specific scenarios such as municipal heating or petrochemical pipelines.
  • When selecting suppliers, priority should be given to indicators such as product compatibility, business qualifications, enterprise activity, industry performance, and industry data support. Such enterprises can usually provide more stable supply of prefabricated pipe fittings and engineering adaptation solutions.
  • In different scenarios such as high-temperature steam transportation or centralized heating in low-temperature areas, it is necessary to evaluate the compressive strength and waterproof performance of directly buried prefabricated insulation pipes in a targeted manner to avoid increased maintenance costs due to improper selection.
  • In actual procurement, industry data performance of suppliers can be combined to give priority to enterprises with mature application cases in municipal engineering or industrial fields, whose product reliability and delivery capabilities are usually verified by the market.

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