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Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.

Zhejiang Risson Valve is located in QianShi Industrial Zone, Oubie Town, YongJia, where is a famed hometown of pumps and valves in china. The company covers the total area of 16000 square meters. Established in 1995, the company has many years of experience in valve manufacturing and now it developing fast and stably. Through years of consistent innovation and develop.Risson now prides itself on technical strength, the company now has 232 staff members and 20 senior engineers and technicians. The use of specialized software like Pro/E.CAD etc shorted the P&D and trial manufacture cycle, and greatly improved the service life and dependability of the products. Besides, Risson now owned more than 200 sets of digital-controlled lathe and processing center, it has been certified to ISO9000-2000 and pressure vessel AZ, now it undertaking API and CE certification, and now we manufactured to the advanced international standards, such as API.ANSI.BS.DIN.JIS.JPI and GB.or no standard products to meet customers' requests, like Knife gate valve, slurry valve, , stainless gate valve series(cast iron ZG1Cr18Ni9Ti, ZG1Gr18Ni12Mo2Ti, CF8, CF8M, CF3, CF3M), globe valve, check valve, ball valve with size ranging from DN50~1200mm,the pressure from 150Lb to 2500Lb(1.0Mpa~42.0Mpa) and the temperature from -196ºC~+650 ºCand it suitable for acid, alkali, water, steam, seawater, coal gas, natural gas. ect caustic and no caustic medium product, the product widely used in petroleum, chemical, paper making, fertilizer, brewing and metallurgy ect. And our product has been greatly recognized by users for their consistent and superior quality. Based upon the philosophy of 'established in valve market and stuck to quality commitment', people of Risson supported by leading technology and management are dedicated to providing you with better quality and service.