日韩福利片午夜免费观着,gv天堂gv无码男同在线观看,无码激情亚洲一区,亚洲日本va中文字幕亚洲,日本无码人妻丰满熟妇区,国产男生午夜福利免费网站,性色欲情网站iwww九文堂
,97色成人综合网站






    
   
    
   
   
    Service Hotline
    086-577-86923687
    
   
    

    





    
	
    
    	
        
    
    
    

    

    
 
    
  
  
  
  

  

 
    

    


    
        
        
        
    
            
        
    

    









    Current Location:Home - News - Industry News
    


    


    
            
    
                
            
    

    



    



        
    Head types and production methods
    
          
    Release Time:2011-11-23  Views :  
                    
    
         
    Category Head
    

     
    

    Head Material can be divided into: plastic, stainless steel seal top, head products are mostly male, cone shell, adjustable sections, flat lid and tightening the mouth. Wherein the convex head (sometimes referred to by the shape classification) comprising: a hemispherical head, oval head, dished head and a spherical cap-shaped head.
    

    Head of manufacturing methods
    

    a) Small head: the overall shape;
    

    b) large and medium-sized head: first splicing molding - the most widely used, mainly for the requirements of the standard in terms of it;
    

    c) large head: because of factors such as transport and open file request to split forming, after welding together.
    


    

   
    
      
         
    
            
    Key Words : 封頭
    
            
        
    
        
      
    
     
        
   
    
  
   
    
        
    Products
    
        
    

         
    
         
          
    
		    
    Elliptical head
    
		    
    Elliptical head
    
	    
    
                
            
          
    
		    
    Butterfly head
    
		    
    Butterfly head
    
	    
    
                
            
          
    
		    
    Spherical head spin edge
    
		    
    Spherical head spin edge
    
	    
    
                
            
          
    
		    
    Flat Head
    
		    
    Flat Head
    
	    
    
                
            
          
    
		    
    Spherical head
    
		    
    Spherical head
    
	    
    
                
            
          
    
		    
    Bow bottom head
    
		    
    Bow bottom head
    
	    
    
                
            
          
    
		    
    Conical head
    
		    
    Conical head
    
	    
    
                
            
          
    
		    
    Spherical cap shaped head
    
		    
    Spherical cap shaped head
    
	    
    
                
            
          
    
		    
    Insulation panel
    
		    
    Insulation panel
    
	    
    
                
            
          
    
		    
    Expansion Joints
    
		    
    Expansion Joints
    
	    
    
                
            
          
    
		    
    Jacket (cylinder) rotation side
    
		    
    Jacket (cylinder) rotation side
    
	    
    
                
            
          
    
		    
    Manhole flange
    
		    
    Manhole flange
    
	    
    
                
            
         
    
         
    
    



  
   
    
   
   
   
   
   
   

    








    



    
  
    
    
    
      NAVIGATION
    
    
    
  
    

  
    
    

    
    
      
      
    
        Wenzhou Shangshang Metal Products Co., Ltd. 
    
        Add : 208,Zhanhong Road,Dushan,Longwan CentralIndustry,Wenzhou
    
        Tel : 086-577-86923687 85981288    Fax : 086-577-86913687
    
        All Rights Reserved © 2016 Wenzhou Shangshang Metal Products Co., Ltd    Zhejiang ICP No. 08,005,782
        
      
    

    

      
	
    • Follow Us
      Follow Us
      • 

    


    




    


    
    


  
    









主站蜘蛛池模板：
aa区一区二区三无码精片|
毛片日本|
夜爽8888视频在线观看|
亚洲а∨精品天堂在线|
少女逼逼|
国内精品视频一区二区三区|
无码少妇一区二区三区浪潮av|
爱爱高潮视频|
成人av影院在线观看|
在线天堂中文在线资源网|
亚洲永久网址在线观看|
麻豆91精品91久久久|
国产一区二区三区九精品|
青青草免费公开视频|
欧美性受xxxx黑人xyx性爽|
久久久久久久久99|
中国免费看的片|
国产精品日本亚洲777|
久热精品在线|
欧美精品一二|
亚洲精品无码久久久影院相关影片|
国产在线超清日本一本|
亚洲熟妇色自偷自拍另类|
波多野结衣中文字幕一区二区|
国产精品午夜爆乳美女视频|
av无码av不卡一区二区|
97国产超碰|
久久久久久久久久免费|
国内精品人妻无码久久久影院|
欧美婷婷丁香五月社区|
午夜伦理剧场|
草草影院地址|
亚洲一区二区三区含羞草|
午夜性又黄又爽免费看尤物
|
亚洲欧洲精品成人久久av18|
free性欧美hd另类|
久久精品人妻无码一区二区三|
午夜视频在线瓜伦|
国产精品国产三级国产剧情|
欧美天堂在线观看|
国产骚b|