Technical Requirements
1. The flange shall be fabricated ,inspected and accepted according to JB4728-2000"Pressure vessel flange classification and technical conditions". 2.Flange sealing surface and surface have no cracks and other effects of flange strength or connection reliability defects. 3. The tolerance on bolt circle diameter and bolt hole spacing shall be ±0.5mm,the tolereance on random bolt hole spacing shall be ± 1.0mm.
4. The tolerance of the dimension for surface machined shall be in accordance with GB/T1804-2000 ,grade m, other with grade c.
Our company is specialized in producing three or four pressure vessels and single and double tube plate manufacturers, the company through continuous self-development and innovation has been to break through the traditional tube plate processing technology, using advanced CNC machining centers, combined with independent research and development processing technology and tools to high precision, high-performance, favorable prices abroad to undertake thermal power, nuclear power, desalination, sea salt, chemical, petrochemical pressure vessels, heat exchangers, condensers, ammonia cooler, acid ethylene synthesis reactor and other types of stainless steel, carbon steel, alloy steel, titanium, aluminum, copper alloy tube diameter, high thickness plates, flanges, forgings and partitions, baffles, deep processing of composite panels business.
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