AWWA C207 standard features flange of classification and what are?

Large anti-corrosion "AWWA C207 flange" mainly oiled, galvanized anti-corrosion measures. Large anti-corrosion flange according to the connected components can be divided into the container flange and pipe flange; by structure type, with integral flanges, loose flanges and threaded flange. Large flange corrosion is mainly used in thermal radiation cross-linked polyethylene with anti-corrosion technology. Radiation cross-linked polyethylene pipe coating is a new type of thermal performance with a good easy-to-weld pipe anti-corrosion materials. Hot melt adhesive layer is composed of a substrate and bilayer material. The main standard SY/ T0413-2002 "buried steel pipeline polyethylene coating technology standards", SY/T4054-2003 radiation crosslinked polyethylene Radiation crosslinked polyethylene heat shrinkable band (sets) ", SY / T0415-1996 "buried steel pipeline corrosion rigid polyurethane foam insulation technology standards." Large anti-corrosion material mainly carbon steel flanges mainly for oil and natural gas engineering and chemical industries. Large anti-corrosion "AWWA C207 flange" manufacturing process is divided into forging, casting, cutting system, rolling four. The main criteria of large corrosion flange GB/T 9114-2010 with neck steel pipe flanges, GB/T 9115-2010 welded steel pipe flange, GB/T 9116-2010 with neck flat welding steel tube method Portland, GB /T 9117-2010 with neck socket welding steel pipe flanges, GB/T 9118-2010 welded ring Loose hubbed steel pipe flanges. Large flange corrosion chemical industry mainly uses heat-shrinkable band, it is mending as insulating buried and overhead weld steel pipe corrosion and heat pipe design. It is made of radiation crosslinked polyolefin substrate and special seals hot melt adhesive composite. Large anti-corrosion "AWWA C207 flange" to production methods can be divided into pushing, pressing, forging, casting and so on. Large anti-corrosion flanges manufacturing standards can be divided into GB, electricity standard, ship standard, technology standard, water standard, American Standard, the German standard, Japanese standard, the Russian standard and so on.