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Add: Xishi Street,Tangzha,Nantong,Jiangsu Province, China
Tel: 0513-55013886
Fax: 0513-55013865


Nantong High & Medium Pressure Valve Co., Ltd refer to COMPANY hereafter )was founded in 1965. As a member of unit of power station supplementary equipment division of china, Electric power equipment association, china petrochemical equipment association, JiangSu china valve industry association, china oil material equipment general supplier, COMPANY were awarded ISO9001ISO14001OHSAS18001 certification and special equipment manufactured license. And are also awarded API 6DAPI600API607API6FA certificates by American Petroleum Institute (API) and CE certificate by EU.


   The registered capital of COMPANY is 100.66 million. Annual production capacity is 8000 tons and the revenue is 250 million. The registered mark isTH.


1. Product instruction:

   Mainly valve type include: Gate, Check, Globe, Ball valve, filter, plug valve,etc ,size up to 64” and pressure is 4500LB.


2. Valve type:

   Gate, Check, Globe, Ball valveplug valvefilterY type, and non-normally standard valve. Drive methodmanual, electric, pneumatic and gear transmission. End type: raise flange, socket welding, butt-welding and wafer, etc.


3. Size & pressure rate:

   A) GB, HG, JJB standard, DN25~1600mm/PN1.6~16.0Mpa

   B):API, ANSI, DNI, BS, standard, etc. 2”~48”/150~4500LB

The valve pressure rate may be up to 76.0Mpa used on power station.

Non-normally standard gate, globe valve shall be manufactured in company if necessary.


4. Mainly material & applicable temperature


Material & Temperature



Temperature applicable


Carbon steel


WCC, etc.


For middle & higher pressure valve

Low temperature carbon steel


LCC, etc.


For low temperature valve

Alloy steel

WC6 (CrMo)

WC9 (25Cr2MoV)

C5 (Cr5Mo)

C12A, etc.


For non-corrosion & higher temperature valve


For corrosion& higher temperature valve


stainless steel

CF8 (304) (0Cr18Ni19)

CF8M (316)(0Cr17Ni12Mo2Ti)

CF3 (304L)



(1   For corrosion medium




P (1Cr18Ni9Ti)

R (1Cr18Ni12Mo2Ti)






Production Capacity and Inspection Equipment


The company has strong production capacity, covers an area of about 68 thousand square meters. The company has complete equipment used in machining, surface treatment and welding . Machining equipment may meet the various production requirements 3 CNC machine centers5 CNC machines 2 NC VTLs 2 NC Boring Machines 2 NC Drilling Machines 1 scale vertical lathe exceed 4 meters and 18 welding equipments.

The company is well-equipped with spectrometers c/w mobile detectorone helium mass spectrometer leak detectorx-ray detection room which is recognized by Jiangsu environment protection bureauand other NDT equipments , hardness testertensile testingimpact testing machineetc.  Inspection & testing equipments can meet the requirement of production and R&D.



Technical ability:


The Staff number in company is 298 including 56 technical persons (machine, melting, heat treatment, NDE, computer, material analysis,& electron& economic management etc), among this 56 technical persons the high-qualification number is 18.


Auto CADSolidworks and Patran are used in design and product can be designed and manufactured according to GB, API and ASME. A room for scientific and technological archives is available. All special employees have the qualified license after technical training. There persons work for chemical & mechanic test and six persons for NDT(including 2 persons qualified by States Bureau of Technical Supervision level license). Four welding persons work for pressure container.


Quality Assurance

COMPANY were award ISO9001 certificate in 1997 and commend advanced unit in quality system in Nantong City. The API600, API6D, API6FAAPI607,CE (97/23/EC)special equipment manufactured licenseGOSTISO14001and OHSAS18001 license have been obtained in recent years.


The company established the quality system based on ISO and control the quality from design, material to shipment. All records can be found in reference room. We programmed system of customer satisfaction. Every year, we do survey from the customers and then analysis based on survey reports. For customers’ complaint, reply to them must be within 12 hours. promising that professional staff to arrive at the scene within 24 hours when the products of domestic sale have quality problems. We will deal with that carefully and try our best to meet customer’s requirement. 


New product design and development

In recent years, more and more attention to technical investment and also  technical programs held by city every year have being undertaken by COMPANY.and innovative and high technology enterprise was honored.  We have 21 patents and 3 inventions .We had applied for 2 invention patents last years and they are now being reviewed.


     Recently,COMPANY in the development of forged steel valve has made gratifying achievements. started from 2006 years in developing the large diameter with high pressure C12A valves service in supercritical thermal. Valve involves wedge gate valve, parallel double disc gate valves, check valves and Y type globe valve, diameter 2” ~ 30" pressure with Class 600 LB to 4500 LB. Design, manufacturing technology is in leading position in the domestic. products are exported to foreign countries, praised by foreign customers many times.


The general manager’ article "the development of the high pressure / large diameter with C12A valves" won the second prize on the "best paper of valve association bulletin” in 2011 years.


In 2012 years, company developed products with the high pressure forged steel valve serviced on petrochemical hydrogenation device. which passed the new technology and new product identification under jiangsu province and Nantong in scientific and technological achievements appraisal, and has obtained four high-tech products in jiangsu province, 10 "- 4500 LB Y type pressure seal bonnet with  forged steel globe valve is to obtain" the 6th China international fluid machinery exhibition in 2012 years, the 4th China international valve expo exhibition silver products.”


In 2013 years, based on the basis of forged steel with high-pressure valves on petrochemical hydrogenation device , COMPANY also developed the separate   wedge gate valve with series products, which passed the Jiangsu new technology and new product identification and Nantong scientific and technological achievements identification successfully, technical level has reached the domestic leading.


After the successful development of new products,application in market, its achieved good economic and social benefits, by which COMPANY won the new customers , increasing sales revenue of $10 million.



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