Chiho Hebei Industry with neck full name with neck flat welding flange welding steel pipe flanges English name: Slip-on referred SO with neck flat welding flange with welded flange plate is the same as the steel pipe, pipe fittings and other projects into fillet with inner flange by equipment or piping connected to the flange. Domestic common manufacturing standards are: People's Republic of China National Standard GB / T 9116-2010 with neck flat welding steel pipe flanges (Hubbed slip-on-welding steel pipe flanges); People's Republic of China Chemical Industry Standard HG / T20592 ~ 20635 -2009 in the PN series (European system) HG / T20592 ~ 20635-2009 in Class series (American system) Hebei Industry Chiho not easily deformed welded flange GB flange cover, sealed Falangaijia work, widely flange cover plant, welded flange suitable for pressure or temperature fluctuations pipeline or high temperature, high pressure and low temperature piping, the advantage of cheaper prices, nominal pressure not more than 2.5MPa; also used to transport expensive, flammable, pipeline explosion medium, nominal pressure in PN16MPa around. Standard flange cover, Hebei Chiho (certified), flange cover provided by Chiho Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) Hebei Cangzhou, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Hebei Chiho leadership with the staff warmly welcome all inquiries negotiations to create the Hebei Chiho better future.