Kaistone Valve Co., Ltd. was established in 1988 and is a joint-stock enterprise that integrates research and development, production, and sales, with a total investment of over 50 million RMB. Kaistone Valve Co., Ltd. was established in 1988 and is a joint-stock enterprise that integrates research and development, production, and sales. A joint-stock enterprise that integrates research and development, production, and sales, with a total investment of over 50 million RMB.

We have two factories, one covering an area of 5500 square meters, located in Oubei, the "pump and valve town" of China, just across the river from Wenzhou, with convenient transportation. The other covers an area of 5500 square meters. 66700 square meters, located in Longyou Industrial Zone, Quzhou City, approximately 40 kilometers from Yiwu, 160 kilometers from Hangzhou, and 380 kilometers from Shanghai. There are currently over 160 employees, including 25 technical personnel and 2 senior engineers.

The company has 5 patented products such as high-temperature valves and high-temperature wear-resistant lining gate valves. It is currently a member of the China General Machinery Valve Association, a first-class supply network of the China Petrochemical Equipment Resource Market, a first-class supply network of the China National Petroleum Corporation, and a power station accessory supply network of the State Power Corporation. It has also obtained the qualification of an import and export enterprise of the People's Republic of China and the credit AAA level enterprise of the Industrial and Commercial Bank of China. Keystone valves have gone out of China and entered the international market. We have won the trust and praise of our users with excellent quality, reasonable prices, and excellent after-sales service.

In order to ensure the quality of products and services, our company has established a sound quality control and assurance system, and successfully passed the ISO9001: 2000 quality system certification, American Petroleum Institute API6 D&API 600 certification, EU CE certification and production license for special equipment for pressure pipelines. Through certification, we can ens

The company mainly produces gate valves, ball valves, globe valves, check valves, plug valves that comply with American ANSI/API, Japanese JIS, German DIN, British BS, French NF, and Chinese GB standards, as well as our own patented products such as oxygen specific valves, extraction check valves, high-temperature valves, high-temperature wear-resistant lining gate valves, and valves with purge holes. The products are widely used in various fields such as petroleum, refining, chemical engineering, fertilizers, and natural resources. Natural gas, electricity, metallurgy, mining, etc. are exported to the United States, Germany, the Middle East, Southeast Asia, and other places, enjoying a high reputation in domestic and foreign markets.

The company designs and manufactures high-temperature valves PI ≤ 550 ℃, P II ≤ 650 ℃, P III ≤ 730 ℃, and low-temperature valves -46 ℃ to -196 ℃, purge hole valves, oxygen valves, various special alloy valves, high-temperature and wear-resistant lining valves, and non-standard valves. Product pressure range: 150Lb-2500Lb and 1.6-42.0MPa. Nominal diameter range: NPS 1/2-48 and DN 15-1200. Valve driving methods: manual, electric, gear transmission, pneumatic, hydraulic; The main materials of the valve body are WCB, LCB, LCC, WC6, WC9, C5, C12, CF8, CF3, CF8M, CF3M, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, ZG1Cr5Mo, titanium alloy, Monel alloy, No. 20 alloy, etc.

Over the past 20 years since its establishment, the company has faced unprecedented development opportunities and historical challenges. We will continuously improve product quality, improve management level, and provide customers with high-quality, affordable, and satisfactory services.

We warmly welcome new and old friends and business partners to visit and inspect our factory. We sincerely hope to establish and further strengthen our long-term, friendly, and stable cooperative relationship.