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DJ-098
诚德
Neck flange is a proper term, which is divided into neck flat welding flange and neck butt welding flange.The internationally accepted pipe flange standards can be summarized as two different and non-interchangeable pipe flange systems.
Neck flange is a proper term, which is divided into neck flat welding flange and neck butt welding flange.The internationally accepted pipe flange standards can be summarized as two different and non-interchangeable pipe flange systems.
