Casting flange blank flange cast out, rough shape and size accurately, a small processing volume, low cost, but there are casting defects (pores crack inclusions.); Streamlined internal organization of poor casting (if it is cutting elements, streamlined worse) ; the current minority inferior flange castings made of cast on the size of a small high precision castings, can be special casting, such as permanent mold casting, precision casting, pressure casting, investment casting and centrifugal casting and other causes. The disadvantage is that this type of flange to use more "bread Shanxi iron" is made in the course easy to produce leakage. East Steel Pipe Co., Ltd. Liaocheng shelf channel, flat iron, galvanized flat iron, flat steel, pipe racks, pipe, alloy pipe, seamless tube, square tube, rod, rectangular pipe, galvanized pipe, galvanized square tubes, precision steel tubes, seamless pipe, seamless rectangular tube, seamless light tube, cross fastener, docking fastener, rotating fastener, Mirs rack tubes complete specifications, quality and cheap. East Steel Pipe Co., Ltd. is located in Liaocheng Liaocheng Dongchangfu Phoenix Industrial Park billions pipe logistics market, located in Qingdao - Jeju Museum along the highway, the Beijing-Kowloon Railway runs through north and south do, location and convenient transportation. Our company is the large-scale circulation enterprises specializing in seamless, well-funded, the supply of enrichment, has a high reputation in the steel industry, and more inventory. Annual operating Gang, Steel, Anshan Steel, Bao Steel, Tianjin plant hygiene quality seamless steel pipe, steel production structure of each pipe, large diameter pipe, thick-walled pipe, fluid pipe, low pressure boiler tubes, boiler tubes , fertilizer tube and petroleum cracking tubes, shipping tube, power tubes and more than 600 varieties of imported high-pressure alloy pipe and other various pipe either you buy. Full specifications Qi, quality and quantity. The company has always been: service first, quality first, reasonable price, customer first, good service, sharing client, puerile, the principle of honesty and trustworthiness for the purpose. So Tohatsu company's image and performance in the new year, a new high!