Updated Aug 11, 2026 · Public platform & industry data

Aug 11, 2026 Updated

English
title decor left

2026 Top 10 Variable Diameter Joint Manufacturers in China

title decor right

Top-rated Variable Diameter Joint suppliers, How to choose a Variable Diameter Joint manufacturer, Best Variable Diameter Joint companies in China

The top 10 Variable Diameter Joint manufacturers in China for 2026 are: Yueqing Shenwei Pneumatic Co., Ltd, Henan Qingda Water Supply Materials Co., Ltd, Hengshui Yusen Hydraulic Technology Co., Ltd, Jiangyin Fulei Steel Plate Processing Co., Ltd, Hebei Weiji Pipeline Manufacturing Co., Ltd, Cangzhou Jiangdong Pipeline Co., Ltd, Cangzhou Tianxiangcheng Pipeline Equipment Co., Ltd, Zhenjiang Pacific Electric Co., Ltd, Wenzhou Yuanhao Fluid Equipment Technology Co., Ltd, Hebei Guyuan Flange Pipe Fitting Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

Collapse
Top 1
background image
Yueqing Shenwei Pneumatic Co., Ltd
Overall Score4.9 / 5
Est. Date2012-02-16
Registered Capital10000K CNY

Yueqing Shenwei Pneumatic Co., Ltd., with its registered address in Shangchi Village, Liushi Town, Yueqing City, Zhejiang Province, is registered with the Yueqing Market Supervision Administration. The legal representative is Lv Dongen, and its business scope includes general projects such as manufacturing of pneumatic power machinery and components; Manufacturing of hydraulic power machinery and components; Manufacturing of electronic vacuum devices; Manufacturing of metal tools; Manufacturing of instruments and meters; Manufacturing of distribution switch control equipment; Manufacturing of mechanical and electrical equipment; Manufacturing of plastic products; Sales of plastic products; Sales of rubber products; Wholesale of hardware products; Internet sales (except for the sale of goods that need to be licensed); Software development (except for projects that require approval by law, conducting business activities independently with a business license in accordance with the law). Licensed project: Import and export of goods; Technology import and export (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).. Core products: Variable Diameter Joint, Standard Cylinder, Other Pneumatic Components

Top 2
background image
Henan Qingda Water Supply Materials Co., Ltd
Overall Score4.8 / 5
Est. Date2019-09-29
Registered Capital10000K CNY

Henan Qingda Water Supply Materials Co., Ltd., with its registered address located 500 meters north of the intersection of Yaozhuang Road in Section 237 of the Refractory Materials Industrial Park in Gongyi City, Zhengzhou City, Henan Province, is registered with the Gongyi Market Supervision Administration. The legal representative is Wang Xiaoyang, and the business scope includes research and development, production of pipeline equipment and accessories; Sales: pipeline equipment and accessories, water purification materials, refractory materials, rubber products, building materials (excluding hazardous chemicals), mechanical equipment, chemical products (excluding hazardous chemicals), wires and cables, electromechanical equipment, boiler accessories; Pipeline equipment maintenance and technical services; Import and export of goods or technology (excluding goods and technology prohibited by the state or subject to administrative approval).. Core products: Variable Diameter Joint, Waterproof Sleeve, Bellows Expansion Joint

Top 3
background image
Hengshui Yusen Hydraulic Technology Co., Ltd
Overall Score4.8 / 5
Est. Date2021-02-18
Registered Capital5000K CNY

Hengshui Yusen Hydraulic Technology Co., Ltd., registered at B1003, Jingxian Commercial City, Hengshui City, Hebei Province, with the registration authority of Jingxian Market Supervision and Administration Bureau and the legal representative of Zhang Tianxia, is engaged in the production and sales of hydraulic fluids, fittings, high and low pressure rubber hoses and assemblies, rubber seals, polyurethane products, metal hoses, metal products, PTFE products, compensators, bent pipes, and fluid pipelines. (Business activities that require approval by law can only be carried out after approval by relevant departments.). Core products: Variable Diameter Joint, Joint, Train Brake Hose

TOP4
Jiangyin Fulei Steel Plate Processing Co., Ltd
Overall Score4.7 / 5
Est. Date2007-07-05
Registered Capital60000K CNY

Jiangyin Fulei Steel Plate Processing Co., Ltd., with its registered address located in Qiaoqi Industrial Park, Xuxiake Town, Jiangyin City (south of Yingbin Avenue), is registered with the Jiangyin Administrative Approval Bureau and represented by Huang Lei as its legal representative. Its business scope includes steel plate processing; Manufacturing, processing, and sales of metal structures, mechatronics equipment, and spare parts; Sales of hardware products, electrical equipment, and metal materials; Import and export business of various commodities and technologies through self operation and agency, except for commodities and technologies restricted or prohibited by the state for enterprise operation or import and export. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Variable Diameter Joint, Rack, Heavy Duty Turnover Box

TOP5
Hebei Weiji Pipeline Manufacturing Co., Ltd
Overall Score4.7 / 5
Est. Date2016-04-22
Registered Capital3010K CNY

Hebei Weiji Pipeline Manufacturing Co., Ltd. is registered in Houliu Village, Yanshan Town, Yanshan County. The registration authority is the Administration for Industry and Commerce of Yanshan County, and the legal representative is Liu Shengbin. Its business scope includes manufacturing pipelines and pipeline fittings, pipe fittings, sales of spiral pipes, seamless pipes, concrete pump fittings, conveying machinery equipment and accessories, wear-resistant pipelines, hardware products, sports equipment, valves, and machine tool accessories. To engage in the import and export business of self-produced products and technologies of our enterprise, as well as the import and export of mechanical equipment, spare parts, raw materials and technologies required by our enterprise. Except for goods and technologies restricted or prohibited from import and export by the state. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Variable Diameter Joint, Taper Pipe, Cone Tube

TOP6
Cangzhou Jiangdong Pipeline Co., Ltd
Overall Score4.6 / 5
Est. Date2015-05-27
Registered Capital5000K CNY

Cangzhou Jiangdong Pipeline Co., Ltd., registered at Hengjun Company in Puwacheng Industrial Zone, Yanshan County, with the registration authority of Yanshan County Administration for Industry and Commerce and the legal representative of Xu Chao, is engaged in the sales of spiral steel pipes, straight seam steel pipes, seamless steel pipes, petroleum casings, 3PE anti-corrosion steel pipes, TPEP anti-corrosion steel pipes, epoxy powder anti-corrosion steel pipes, coated composite pipes, non-toxic drinking water steel pipes, insulation pipes, pipeline pipes, bent pipes, alloy pipes, stainless steel pipes, galvanized pipes, fittings, anti-corrosion and insulation materials, pipeline equipment accessories, pipes, plates, wires, elbows, flanges, tees, large and small head heads, blind plates, manholes, valves, compensators, expansion joints, waterproof casings, supports and hangers, wear-resistant pipelines. Wear resistant pipe fittings series products. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Variable Diameter Joint, Head, Flange

TOP7
Cangzhou Tianxiangcheng Pipeline Equipment Co., Ltd
Overall Score4.6 / 5
Est. Date2015-03-26
Registered Capital10000K CNY

Cangzhou Tianxiangcheng Pipeline Equipment Co., Ltd., with its registered address in Xiliu Village, Yanshan Town, Yanshan County, is registered with the Market Supervision Administration of Yanshan County, and its legal representative is Liu Xiaohui. Its business scope includes the sale of steel pipes, petroleum casings, anti-corrosion steel pipes, insulation pipes, pipeline pipes, alloy pipes, stainless steel pipes, bent pipes, pipe fittings, anti-corrosion and insulation materials, pipeline equipment and accessories, pipes, plates, wires, profiles, steel, and machine tool accessories; And the import and export business of the above products.. Core products: Variable Diameter Joint, Anti-Corrosion Steel Pipe, Insulated Steel Pipe

TOP8
Zhenjiang Pacific Electric Co., Ltd
Overall Score4.6 / 5
Est. Date1995-11-08
Registered Capital100000K CNY

Zhenjiang Pacific Electric Co., Ltd., with its registered address at Laolang Village, Youfang Town, Yangzhong City (No. 8 Changwang East Road), is registered with the Yangzhong Administrative Approval Bureau and represented by Dong Zhiqiang. Its business scope includes switchgear, explosion-proof electrical appliances, cable trays, busbars, instrument fittings and valves, metal products, castings, metal hoses, nylon hoses, hose joints, junction boxes, carpets, fiberglass products, and fastener processing and manufacturing. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments) General projects: Manufacturing of other general instruments; Manufacturing of hardware products (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: Variable Diameter Joint, Globe Valve, Instrument Card Sleeve Connector

TOP9
Wenzhou Yuanhao Fluid Equipment Technology Co., Ltd
Overall Score4.5 / 5
Est. Date2015-03-20
Registered Capital12880K CNY

Wenzhou Yuanhao Fluid Equipment Technology Co., Ltd., with its registered address at 1st Floor, Building 2, No. 429 Binhai Fourth Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province, is registered with the Longwan District Market Supervision and Administration Bureau of Wenzhou City. The legal representative is Luo Hongjun, and its business scope includes research and development, manufacturing, processing, and sales of mechanical equipment and accessories, plumbing equipment, and metal products; Processing and sales of valves, flanges, pipe fittings, and pumps; Import and export of goods and technology.. Core products: Variable Diameter Joint, Sanitary Grade Elbow, Diaphragm Valve

TOP10
Hebei Guyuan Flange Pipe Fitting Co., Ltd
Overall Score4.4 / 5
Est. Date2008-05-27
Registered Capital48000K CNY

Hebei Guyuan Flange Pipe Fitting Co., Ltd., with its registered address at Heludian Industrial Zone, Xinman Road, Mengcun Hui Autonomous County, is registered with the Market Supervision Administration of Mengcun Hui Autonomous County, and its legal representative is Liu Xuechao. Its business scope includes the processing and sales of pipe fittings; Sales of metal materials; Import and export of goods or technology (excluding goods and technology prohibited by the state or involving administrative approval) (for projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Variable Diameter Joint, , Three-Way

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Yueqing Shenwei Pneumatic Co., Ltd2012-02-16Variable Diameter Joint, Standard Cylinder, Other Pneumatic Components10000K CNYSupported
Henan Qingda Water Supply Materials Co., Ltd2019-09-29Variable Diameter Joint, Waterproof Sleeve, Bellows Expansion Joint10000K CNYSupported
Hengshui Yusen Hydraulic Technology Co., Ltd2021-02-18Variable Diameter Joint, Joint, Train Brake Hose5000K CNYNot Supported
Jiangyin Fulei Steel Plate Processing Co., Ltd2007-07-05Variable Diameter Joint, Rack, Heavy Duty Turnover Box60000K CNYSupported
Hebei Weiji Pipeline Manufacturing Co., Ltd2016-04-22Variable Diameter Joint, Taper Pipe, Cone Tube3010K CNYSupported
Cangzhou Jiangdong Pipeline Co., Ltd2015-05-27Variable Diameter Joint, Head, Flange5000K CNYSupported
Cangzhou Tianxiangcheng Pipeline Equipment Co., Ltd2015-03-26Variable Diameter Joint, Anti-Corrosion Steel Pipe, Insulated Steel Pipe10000K CNYSupported
Zhenjiang Pacific Electric Co., Ltd1995-11-08Variable Diameter Joint, Globe Valve, Instrument Card Sleeve Connector100000K CNYSupported
Wenzhou Yuanhao Fluid Equipment Technology Co., Ltd2015-03-20Variable Diameter Joint, Sanitary Grade Elbow, Diaphragm Valve12880K CNYNot Supported
Hebei Guyuan Flange Pipe Fitting Co., Ltd2008-05-27Variable Diameter Joint, , Three-Way48000K CNYSupported

Purchasing Guide

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

  • For procurement requirements that require the use of variable diameter joints, it is recommended to prioritize confirming key technical parameters such as interface size, pressure rating, and material to ensure compatibility with existing pipeline systems.
  • In different scenarios such as chemical or water supply, the corrosion resistance and sealing performance of variable diameter joints need to be selected differentially based on the characteristics of the medium to avoid leakage risks caused by parameter mismatch.
  • When selecting suppliers, priority should be given to product matching, business qualifications, enterprise activity, industry performance, and enterprises with industry data support or platform statistical information to balance procurement reliability and long-term cooperation potential.
  • Variable diameter joints are commonly used in HVAC systems to connect pipes of different diameters. When purchasing, attention should be paid to the compatibility of their thermal expansion coefficient with the operating temperature of the system, in order to reduce deformation problems caused by temperature differences.

Knowledge Base

Q

This article analyzes the key points for selecting 50mm plastic water pipe variable diameter joints, including size matching principles, common variable diameter combinations, and installation precautions, to help readers quickly find suitable pipe connection solutions.

Q

1、 Specification Introduction 1. DN25-DN1200: This is a common specification suitable for connecting some small and medium-sized pipelines. Its inner diameter (i.e. small head diameter) ranges from 25-1200mm. 2. DN1400-DN2200: Steel pipe variable diameter joints can be used for larger pipeline connections. The inner diameter range of this specification is 1400-2

Q

This article mainly introduces the definition and function of variable diameter joints, answers the question of whether variable diameter joints belong to pipeline accessories, and introduces common pipeline accessories.

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