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HQ Pipeline valves are designed and produced according to the international standards ANSI/BS/DIN and its application. Butterfly valves, gate valves, check valves, strainers are supplied both the flange end and grooved ends. Quality are well controlled, and certified by ISO, CE, the grooved end valves are UL and FM certified. Benefited from the focusing on quality, customers and markets enlarge every year. They are widely used in fire fighting, water supply and drainage, waste water treatment, desalination, electric power, petroleum, chemical, metallurgy, shipbuilding, heating, medicine, papermaking and other fields. Now they have been well sold and exported to USA, Chile, Argentina, France, Germany, Egypt, UAE... countries in the world.