Updated Oct 6, 2026 · Public platform & industry data

Oct 6, 2026 Updated

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2026 Top 10 Directly Buried Insulation Pipeline Manufacturers in China

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

The top 10 Directly Buried Insulation Pipeline manufacturers in China for 2026 are: Hebei Hengtai Pipeline Technology Co., Ltd, 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, Chengdu Lorek New Material Manufacturing Co., Ltd, Hebei De'en Thermal Insulation Materials Co., Ltd, Cangzhou Fuou Pipeline Equipment Co., Ltd, Cangzhou Tuocheng Pipeline Equipment Co., Ltd, Hebei Yaxu Pipeline 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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Hebei Hengtai Pipeline Technology Co., Ltd
Overall Score4.9 / 5
Est. Date2018-09-30
Registered Capital50000K CNY

Hebei Hengtai Pipeline Technology Co., Ltd., with its registered address located in Zhenggang Park, Yanshan Economic Development Zone, is registered with the Market Supervision Administration of Yanshan County and represented by Wang Junhai as its legal representative. Its business scope includes the research and utilization of pipeline coating, anti-corrosion, and insulation technologies; Production of steel pipes, fittings, flange series products, coated steel pipes, anti-corrosion steel pipes, insulated steel pipes, hot-dip plastic cable conduits, TPEP anti-corrosion steel pipes, anti-corrosion materials, insulation materials and high-density polyethylene outer protective sleeves, wear-resistant, ductile iron and other pipelines and pipeline accessories, transportation facilities, sign posts, pump pipes, concrete pump accessories, fabric dispensers, supports and hangers, rubber hoses, plates, wires, profiles, compensators, valves and pressure vessels; Selling steel pipes, sports equipment, machine tool accessories, hardware products, mechanical conveyors, and accessories. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Insulation Pipeline, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit

Top 2
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Langfang Ouliang Thermal Insulation Materials Co., Ltd
Overall Score4.7 / 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 Insulation Pipeline, Overhead Galvanized Iron Sheet Insulation Pipe, Polyurethane Insulation Pipe

Top 3
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Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd
Overall Score4.7 / 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 Insulation Pipeline, Fire Protection Coated Steel Pipe, Epoxy Coal Tar Anti-Corrosion Steel Pipe

TOP4
Cangzhou Huadun Pipeline Technology Co., Ltd
Overall Score4.6 / 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 Insulation Pipeline, Plastic-Coated Steel Pipe, 3Pe Anti-Corrosion Steel Pipe

TOP5
Cangzhou Jianghong Pipeline Equipment Co., Ltd
Overall Score4.6 / 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 Insulation Pipeline, Aluminum Alloy Lined Plastic Pipe, Steel Sleeve Steel Insulation Steel Pipe

TOP6
Chengdu Lorek New Material Manufacturing Co., Ltd
Overall Score4.5 / 5
Est. Date2019-07-25
Registered Capital10000K CNY

Chengdu Luoruike New Material Manufacturing Co., Ltd., registered at No. 102, Group 16, Longfu Village, Shengping Town, Pengzhou City, Sichuan Province, with the registration authority of Pengzhou Market Supervision Administration and the legal representative of Xu Chunjie, engages in the design, research and development, production, and sales of buried insulation pipes; Sales: chemical products (excluding hazardous chemicals), electronic products, sealing materials, mechanical equipment and accessories, metal materials, hardware products, rubber products, building materials (excluding sand and gravel); Construction of anti-corrosion and insulation engineering; Professional cleaning services for mechanical equipment. Projects that require approval by law can only be operated after approval by relevant departments.. Core products: Directly Buried Insulation Pipeline, Thermal Insulation Pipe, Insulated Pipe

TOP7
Hebei De'en Thermal Insulation Materials Co., Ltd
Overall Score4.5 / 5
Est. Date2015-11-18
Registered Capital50000K CNY

Hebei De'en Thermal Insulation Materials Co., Ltd., with its registered address in Daluo Village, Dacheng County, Langfang City, Hebei Province, is registered with the Market Supervision and Administration Bureau of Dacheng County, Langfang City. The legal representative is Xu Zhentao, and its business scope includes processing and sales of polyurethane prefabricated buried insulation pipes, steel sheathed steam buried insulation pipes, high-density polyethylene outer protective pipes, fiberglass insulation pipes, plastic sheathed steel, steel sheathed steel insulation pipes and insulation fittings, hot spring water insulation pipes, PPR cold and hot water insulation pipes, air conditioning water freezing system insulation pipes, and high-temperature steam composite insulation pipes; Sales: Polyurethane products, rock wool products, glass wool products, rubber products, aluminum silicate products, sealing gaskets, and packing; Undertake the construction of municipal thermal pipelines and anti-corrosion insulation projects. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Directly Buried Insulation Pipeline, , Steel Sleeve Steel Steam Insulation Pipe

TOP8
Cangzhou Fuou Pipeline Equipment Co., Ltd
Overall Score4.5 / 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 Insulation Pipeline, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit

TOP9
Cangzhou Tuocheng Pipeline Equipment Co., Ltd
Overall Score4.3 / 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 Insulation Pipeline, Seamless Steel Pipe, Spiral Steel Pipe

TOP10
Hebei Yaxu Pipeline Technology Co., Ltd
Overall Score4.3 / 5
Est. Date2022-05-17
Registered Capital51000K CNY

Hebei Yaxu Pipeline Technology Co., Ltd., with its registered address at Pucheng Road, Puwacheng Park, Yanshan Economic Development Zone, Hebei Province, is registered with the Market Supervision Administration of Yanshan County and represented by Huang Shouxin. Its business scope includes general projects such as research and development of metal products; Research and development of new material technology; Manufacturing of metal structures; Manufacturing of metal products for safety and firefighting purposes; Manufacturing of architectural decoration, plumbing components, and other metal products for building use; Sales of anti-corrosion materials; Sales of insulation materials; Sales of valves and plugs; Sales of engineering plastics and synthetic resins; Sales of building materials; Wholesale of hardware products; Sales of metal 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: Directly Buried Insulation Pipeline, Anti-Corrosion Steel Pipe, Coal Tar Anti-Corrosion Steel Pipe

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Hebei Hengtai Pipeline Technology Co., Ltd2018-09-30Directly Buried Insulation Pipeline, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit50000K CNYNot Supported
Langfang Ouliang Thermal Insulation Materials Co., Ltd2020-12-23Directly Buried Insulation Pipeline, Overhead Galvanized Iron Sheet Insulation Pipe, Polyurethane Insulation Pipe500K CNYSupported
Cangzhou Huadun Anti corrosion and Insulation Engineering Co., Ltd2009-03-20Directly Buried Insulation Pipeline, Fire Protection Coated Steel Pipe, Epoxy Coal Tar Anti-Corrosion Steel Pipe51000K CNYSupported
Cangzhou Huadun Pipeline Technology Co., Ltd2021-05-18Directly Buried Insulation Pipeline, Plastic-Coated Steel Pipe, 3Pe Anti-Corrosion Steel Pipe100000K CNYNot Supported
Cangzhou Jianghong Pipeline Equipment Co., Ltd2020-05-15Directly Buried Insulation Pipeline, Aluminum Alloy Lined Plastic Pipe, Steel Sleeve Steel Insulation Steel Pipe23000K CNYSupported
Chengdu Lorek New Material Manufacturing Co., Ltd2019-07-25Directly Buried Insulation Pipeline, Thermal Insulation Pipe, Insulated Pipe10000K CNYNot Supported
Hebei De'en Thermal Insulation Materials Co., Ltd2015-11-18Directly Buried Insulation Pipeline, , Steel Sleeve Steel Steam Insulation Pipe50000K CNYNot Supported
Cangzhou Fuou Pipeline Equipment Co., Ltd2021-02-22Directly Buried Insulation Pipeline, Plastic-Coated Steel Pipe, Hot Dip Plastic Conduit28000K CNYSupported
Cangzhou Tuocheng Pipeline Equipment Co., Ltd2017-07-25Directly Buried Insulation Pipeline, Seamless Steel Pipe, Spiral Steel Pipe18880K CNYSupported
Hebei Yaxu Pipeline Technology Co., Ltd2022-05-17Directly Buried Insulation Pipeline, Anti-Corrosion Steel Pipe, Coal Tar Anti-Corrosion Steel Pipe51000K CNYNot Supported

Purchasing Guide

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

  • For procurement requirements that require the use of buried insulation pipelines, it is recommended to prioritize checking key technical parameters such as pipe diameter, insulation layer thickness, and temperature resistance range to ensure compatibility with project design requirements.
  • Directly buried insulation pipelines are commonly used in urban centralized heating, chemical pipeline networks, and other scenarios. When purchasing, products with corresponding compressive and anti-corrosion grades should be selected based on the differences in burial depth environment and medium temperature.
  • 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 application of cold regions in the north, it is recommended to pay extra attention to the low-temperature crack resistance performance of directly buried insulation pipelines to avoid pipeline structural failure caused by temperature differences.

Knowledge Base

Q

Its thermal conductivity is λ=0.013-0.03kcal/m · h · oC, which is much lower than other commonly used pipeline insulation materials in the past, and the insulation effect is improved by 4-9 times. Moreover, its water absorption rate is very low, about 0.2kg/m2. The reason for low water absorption is that the closed cell rate of polyurethane foam is up to 92%. Low thermal conductivity and low water absorption,

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