Joe welded along the size of the first 
 http://www.wzqiaoshun.com/977.htm 
 Size of the head is a length of two short tubes of varying caliber clip, to connect two different size diameter pipe, steel and welded sub-two, with Concentric and eccentric first two types, the import and pump pipeline to connect more with the eccentric head to prevent cavitation. Reducing the size of pipe known as the first, is divided into concentric and eccentric head size that is the bulk of the first times the diameter of small diameter, for example, "8 × 6", said the bulk of the diameter is 8 inches, head diameter is 6 inches the size of the head . 
 Pressure wall thickness Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS 
 Material into carbon steel, alloy steel, stainless steel pipe stainless steel Concentric Reducer, Stainless Steel size of the first in the petrochemical, pharmaceutical, chemical, food engineering, tea, wine project, beverage engineering, project dairy, edible oil engineering, and many other large-scale application in the main fluid industry specifications: DN15-DN100 manufacturing standards: SMS, ISO, DIN, 3A, IDF, JIS, Material: 304,321,304 L, 316L Finish: CNC finishing, mirror-polished meet 高标准 international health standard packaging: carton, wooden box manufacturing process: CNC machine tool imports 
 Series: Sanitary Fittings http://www.wzqiaoshun.com/weishengjiguanjian.htm 
 Recommended products: Wenzhou stainless steel pipe fittings http://www.wzqiaoshun.com/ 
 Recommended related: stainless steel welded pipe http://www.glbuxiugang.com/ pump http://www.wzlongze.com/buxiugangbeng.asp stainless steel tube stainless steel flange http://www1.wzpangrun.com/ http:/ / www.zt-pipe.cn stainless steel valves http://www.armavalve.com.cn/