About Us

Jiangsu Yuanfang Power Technology Co., Ltd. belongs to China coal geology Jiangsu Coal Geology Bureau.

At the beginning of its establishment, mainly for our bureau The exploration unit produces drill bits, drill pipes and maintains exploration equipment. In 1998, Began to develop and produce piston, cylinder head and other diesel engine parts. By it is composed of four branches. Is a high-tech enterprise in Jiangsu province, with 5 High-tech products.

Jiangsu YuanFang Power Technology Co., Ltd. is a high-tech enterprise subordinate to Jiangsu Coal Geology Bureau of China Coal Geology administration. In November 2017, it was listed as "Changzhou high power piston and diesel engine parts engineering technology research center"; Passed the integration certification of industrialization and industrialization in November 2018; On December 11, 2020, it was awarded the only "Jiangsu Engineering Technology Research Center" in Tianning District, Changzhou City. The company's products cover diesel engine parts manufacturing, agricultural machinery hub, heat exchanger fin tube and brazing material development, production and sales.

The company attaches importance to product R &amp D and technology investment, has strong piston R & ability, has rich piston manufacturing experience, and has in-depth research on medium speed diesel engine piston materials and processes. It is one of the earliest manufacturers in China to develop and produce medium speed diesel engine thin-walled ductile iron pistons, and has more advanced technology in this field.

The company has strong R & D, design and manufacturing capacity of complete equipment, and has successively developed rapid quenching furnace, gas mold temperature machine, electromagnetic induction audio heater, sewage treatment equipment, heat pipe low-temperature waste heat recovery device, soil sampling drilling rig, etc.

Company Area (MU)
Total Assets (million yuan)
Engineering And Technical personnel
Annual Output Value (million yuan)

Company History

1952 Establishment of the company Jiangsu Coalfield Geological Exploration Machinery Factory

1992 Renamed: Jiangsu Coalfield Geological Machinery Factory

2000 Renamed: Jiangsu Coalfield Geological Machinery Factory

2001 Renamed: Jiangsu Coal Geological Machinery Development Center

2007 Jiangsu Coal Geological Machinery Development Center Establishment of capital contribution Changzhou Yuanfang piston manufacturing Co., Ltd.

2015 Rename:Jiangsu Yuanfang Power Technology Co., Ltd. (Jiangsu Coal Geological Machinery Development Center)

The Company's Future Development Goal And Listing Goal

The company will build at least 6 specialized machinery manufacturing production lines in the future. Automatic casting production line, automatic large wheel hub production line, water-soluble paint coating production line, large-size aluminum pipe profile production line, fully automatic brazing ring production line and environmental protection equipment assembly production line. Strive to have two production lines at the end of the 14th five year plan to reach the domestic leading level, so as to cultivate a listed enterprise with market competitive products.


The company attaches great importance to product quality control and has passed ISO9001:2008 quality system certification, ISO14001:2004 environmental management system certification, OHSAS18001:2007 occupational health and safety management system certification and China Classification Society (CCS) certification. It has also passed the license production certification of L23 / 30-4 stroke diesel engine piston of man B-W company. The company has passed the factory certification of BV Classification Society of France, CCS certification of China Classification Society and saber factory certification of Saudi Arabia.


Third Party Certificates

ISO9001:2015 / ISO14001:2015 / OHSAS18001:2007


Third Party Certificates

China Classification Society/France BV classification society/Germany MAN supplier recognition

High-tech products5

High-tech enterprise/Engineering technology research center


In October 2016, it obtained the certificate of Jiangsu high tech enterprise.

In November 2017, the company was officially approved by Changzhou science and Technology Bureau and listed as Changzhou "high power piston and diesel engine parts engineering technology research center". On December 11, 2020, the company was officially awarded as the only "Jiangsu Engineering Technology Research Center" in Tianning District, Changzhou City.
In 2019, the company passed the star cloud "three star" enterprise qualification evaluation of Changzhou Bureau of industry and information technology, and was awarded the "three star" cloud unit by Changzhou City. It has become one of the first "thousand enterprises on the cloud" units in Changzhou.
From 2016 to 2020, the company was awarded the honorary titles of advanced unit of scientific and technological innovation, special award of scientific and technological innovation, scientific and technological innovation team award and so on.
By the end of June 2021, the company holds 45 valid patents, including 2 invention patents, 1 appearance patent and 42 new type patents. In addition, there are 6 utility model patents and invention patents under review, including 2 utility model patents and 4 invention patents. The patents cover diesel engine accessories series products, aluminum products, agricultural machinery products, welding materials and waste heat recovery device series products. Among them, 14 patents have been applied for 30m environmental protection sampling drilling rig, including 4 inventions, 9 new applications and 1 appearance patent.

Utility Model Patent


OA management system / ERP management software / PLM management software


Take the lead in passing the two fusion tubes Management system evaluation.

Product Overview


Specializing in the development, production and sales of brazing materials, it can produce more than 80 kinds of solder products such as copper based solder, silver solder and aluminum solder, including silver copper zinc, silver copper zinc tin, silver copper zinc indium, silver copper zinc cadmium, copper zinc, copper phosphorus, copper phosphorus silver, aluminum silicon copper, zinc aluminum, zinc cadmium and other series. The product shapes are: round strip, flat strip, square strip, ring, sheet, granular, tubular, etc. It can also develop and produce other special varieties and specifications of brazing materials according to customer requirements, and provide brazing technical consultation, guidance and other services. The registered trademark of the product is "Xinhaihua" brand.

The products have been tested by national authorities over the years and meet the national standards. The environmental protection solder has been tested by SGS (Swiss general standard) or CTI (China testing) and meets the requirements of EU environmental protection directives. Now it has more than 30 sets of advanced production and testing equipment, and the existing production capacity is 360 tons of all kinds of copper silver solder per year. The product market covers all provinces and cities in China and has been exported to Hong Kong, Taiwan, Southeast Asia, the Middle East, Africa, the United States and other countries and regions.

The products are widely used in the welding of non-ferrous metals or ferrous metals and their dissimilar metals in refrigeration and air conditioning, refrigerator, freezer, refrigeration compressor, high-voltage electric appliances, transformer, large motor, medical equipment, glasses, machinery manufacturing, cutting tool manufacturing, aerospace, military industry and other industries.


Piston, water jacket, cylinder head, supercharger housing
HT200 - HT350, QT400 - QT900
Main key parts of diesel engine, complex structure. Instead of imports, widely used in train, ship, power, military, nuclear industry and other fields.

Agricultural machinery wheel hub
16 inches. - 38 inches
Covers all models of dongfeng agricultural machinery and agricultural machinery hub.


Aluminum tube, finned tube, rolling mill
Pure aluminum tube, with good heat dissipation. Mainly used in electric heating, chemical industry, energy, environmental protection and other fields.

Brazing rod, wire and ring
Copper base solder, silver solder, aluminum solder and other categories of more than 80 varieties of solder. Products are widely used in refrigeration air conditioning, refrigerators, freezers, refrigeration compressors, high voltage electric appliances, transformer, Non-ferrous metal or black metal and its dissimilar metal in the industries of machine, large motor, medical equipment, glasses, machinery manufacturing, cutting tool manufacturing, aerospace, military industry and so on The welding.


Zjp-30 environmental friendly soil sampling rig
Maximum bore diameter: φ108mm
Maximum drilling depth: 30m
Maximum slewing depth: 150m
Impact frequency: 2000rpm

Environmental pollution site investigation
Environmental monitoring well
Urban shallow underground space exploration
Engineering survey

Company Equipment

Company has professional piston casting production line, steel ring production line, aluminum pipe profile production line and brazing material production line. The large-scale equipment in the production line includes laser blanking, 2000 ton hydraulic, machining center, vertical CNC machine and horizontal CNC machine. It has various spectrum analyzers, nondestructive flaw detectors, three coordinate detectors and other testing equipment.

By the end of 2020, the company had a total of 620 large and small equipment on the list, with an original value of 40.49 million and a net value of 13.54 million. In order to expand the production line, 13 million yuan of new equipment will be added in the first half of 2021.

The foundry covers an area of 5000m2 and adopts furan resin self hardening sand process, which can meet the process requirements of various gray cast iron, nodular cast iron, special alloy cast iron and other castings. The designed casting capacity of the workshop is 5000t / year, equipped with a full set of advanced production equipment, which can realize the mechanized and automatic operation of the whole process of molding, melting, pouring, production and so on. At the same time, in order to meet the current and future domestic policies and regulations related to safety, environmental protection and informatization. In addition to the high-standard configuration of modeling, smelting and other equipment, the whole process high-power odor purification and dust removal system and production data access channel are added to effectively avoid the risk factors that may affect the stability of production behavior.

The company developed and produced Φ 160 bore to Φ 400 cylinder diameter and dozens of medium speed diesel engine pistons. The main structural forms are thin-walled ductile iron piston, alloy cast iron piston, steel crown aluminum skirt composite piston and steel crown iron skirt composite piston. The products are matched with some famous diesel engine manufacturers at home and abroad (Federal mogul, CSSC power, Weichai heavy machinery, CRRC group) and exported to the United States, Canada, India and other countries and regions. At the same time, the company has also developed and produced a variety of medium speed diesel engine cylinder heads, cooling water jackets, agricultural machinery steel rings, excavator steel rings and other products and accessories. There are two kinds of wheel manufacturing products: Agricultural Machinery steel ring and construction machinery steel ring. The development specifications of agricultural machinery steel ring are from 12 inches to 32 inches, and the construction machinery steel ring has a series of products such as 13, 20, 22, 25 and 30 tons. At the same time, the company has an annual output of 5000 tons of various types of aluminum tubes and profile products of different specifications, 200 sets of metal sheet pipe rolling machines and other mechanical products, and 300000 cutting tools. Its customers are all over the United States, Iran, India and the whole country, textile, printing and dyeing, petroleum, chemical industry, coal mine, electric power and other industries. The products developed and manufactured cover the whole industrial chain from aluminum tube and profile extrusion to the production of metal finned tube mill, rolling mill cutter, finned tube cleaning machine, finned tube puller, single and bimetallic finned tube, corrugated tube, threaded tube, spiral tube, heat pipe radiator and corrugated tube radiator.


Two 1T electric furnaces


Sand treatment plant


Pouring line


1 5T sand mixer

2 1.5T sand mixer

Our Advantages

Nondestructive testing

Laboratory: Two metallographic microscopes, 1 C-S analyzer, 1 universal tensile testing machine, 1 spectrometer,1 fluorescent magnetic particle flaw detector.


Piston machining line


Turbocharger housing processing line

Our Clients