Company news
Looking for suppliers ——Cooperation is not a slogan, win-win is the pursuit
February 19, 2019
Sichuan Changyi Oil- Gas Gathering Transmission Equipment Co., Ltd. (hereinafter referred to as Changyi) is national high-tech enterprises and a new three-board listed enterprise (stock code 830902), which is engaged in researching, designing, manufacturing and marketing the special valve for the petroleum and natural gas (Shale gas) pipeline, skid-mounted equipment, pressure vessel and LNG cryogenic equipment. 
Changyi, founded in 1987, is located at Nanxin No.1089, High-tech Zone, Leshan City, with an area of 100 mu (66600 square meters). It has production plant of 40000 square meters, technical R & D center and a comprehensive office of 10000 square meters, with total assets of 300 million Yuan, an employee of 300, and a total of 159 technical personnel.
Changyi has researched and developed more than seventy application projects, owned more than sixty independent patents, and undertaken more than thirty national and provincial key scientific research projects. It is one of National and Industry Standard Drafting Committees, and the qualified suppliers of PetroChina, Sinopec and China Nuclear Group and other the world's top 500 enterprises. Its leading product’s technology and its quality is in the domestic leading level. The products sell well in Five Major Oil and Gas Producing Areas (Sichuan-Chongqing, Shensi-Kansu-Ningxia, Xinjiang, Qinghai and Songliao Basin), and well received by customers.
Since the national implementation of the long-term safety strategy for energy in 2018, the exploration and development of natural gas (shale gas) has shown blowout exploitation. Sinopec, CNPC and CNOOC have a great increase in demand for our products, so the original supplier of the company cannot meet the company's purchase demand. The company is now looking for qualified suppliers and seeking a win-win relationship between the two parties.
Qualification conditions of qualified suppliers:
1.Manufacturer which can manufacture any of the products in the supply catalogue of Changyi can join in the company's supplier.1.Manufacturer which can manufacture any of the products in the supply catalogue of Changyi can join in the company's supplier.
2.Manufacturer shall have certain business scale, good business performance and independent legal personality.
3.The product quality of the manufacturer must be guaranteed.
4.If there is a product quality problem within one year, manufacture shall provide free warranty or conduct replacement.
5.The manufacture should has good business reputation and good social relations in the local area.
6.The manufacture should show and submit business license and relevant manufacturer qualification certificate to Changyi.

Major Equipment Supply Catalogue

Material Type

Material Name

Material Requirements


Carbon steel and stainless steel

20#45#A105LF22Cr13304316LS2205317-4PH, etc.


Carbon steel and stainless steel pipe

20#L245NL360NQ345CQ345DS30408S31603S31608, etc.


Container plate: carbon steel and stainless steel plate

Q235BQ245RQ345RS30408S31603S31608, etc.


All kinds of carbon steel profiles: angle, groove, flat steel, H type, square tube, rectangular tube, etc.



Special alloy steel

C-276Inconel 625Incoloy 825Inconel  718, etc.


Nonferrous metal: copper product, aluminum product


Skid-mounted component and instrument

LNG storage tank



Imported valve and pump and others



All kinds of valves, such as gate valve, globe valve, ball valve, etc.



Low temperature valve



Temperature transmitter, and  pressure transmitter



Pressure gauge



Flowmeter, differential pressure meter, liquid level meter, bimetallic thermometer, etc.


Electrical appliances and fittings

All kinds of brand electric and pneumatic actuators



PLC control cabinet and box



Explosion-proof electrical appliances and materials






Heater, core, insulating joint, etc.



Wire and cable



steel grating (steel plate)



Welding material



Oil paint






Flange, pipe fitting


Forged parts

Valve blank parts


Casting parts

Valve blank parts


If you are interested, please consult Mr. Dai, the head of supply Department of Changyi
Tel.:0833-2370288          Cellphone:13330919192