<small id="4ii0i"></small>
<sup id="4ii0i"></sup>
<tfoot id="4ii0i"><noscript id="4ii0i"></noscript></tfoot>
<nav id="4ii0i"></nav>
    • 

  • 
欧美精品亚洲日韩a,2021国产在线观看,欧美日韩中文字幕在线视频,国产超碰人人一区二区三区,久久久久久久成人午夜精品福利,伊人精品久久久久中文字幕,久9视频这里只有精品8,国产精品黑色丝袜在线观看 






    
   
    
   
   
    Service Hotline
    086-577-86923687
    
   
    

    





    
	
    
    	
        
    
    
    

    

    
 
    
  
  
  
  

  

 
    

    


    
        
        
        
    
            
        
    

    









    Current Location:Home - News - Products Knowledge
    


    


    
            
    
                
            
    

    



    



        
    Comparison Process head cold and hot processing
    
          
    Release Time:2011-10-26  Views :  
                    
    
         
    Processing head is generally divided into cold and hot working are two, compare the following three aspects of the two paper processing head were:
    

     
    

    A, head cold material deterioration does not occur, especially suitable for processing stainless steel head;
    

    Thermal processing material deterioration will occur, resulting in decreased corrosion resistance of stainless steel head, stainless steel head is not suitable for processing.
    

    B, cold will not change the size of the contraction caused by cooling, regular shape, size, accuracy and consistency;
    

    Hot forming mold can cause thermal expansion and contraction of the cooling head, the size difference is difficult to control and consistency.
    

    C, to maintain the surface after head cold forming smooth surface of the original material, beautiful appearance.
    

    Surface oxide formed after thermal processing head of serious and difficult to remove.
    


    

   
    
      
         
    
            
    Key Words : 不銹鋼封頭
    
            
        
    
        
      
    
     
        
   
    
  
   
    
        
    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：
免费av在线亚洲一区|
久久久亚洲欧洲日产无码AV|
久久永久免费人妻精品下载|
青青草视频免费观看|
操操影院|
99久久久国产精品免费无码专区
|
亚洲欧美精品日韩欧美|
国产99久久亚洲综合精品西瓜tv|
久久亚洲熟女中文字幕|
久久瑟瑟|
精品人妻丰满久久久a|
成人做受120秒试看试看视频
|
美女一级毛片无遮挡内谢|
伊人久久丁香色婷婷啪啪|
久久精品国产精品亚洲红杏|
国产对白刺激真实精品91|
国产午夜无码视频免费网站|
国产在线高清一级毛片|
国产成品精品午夜视频|
久久夜色精品国产噜噜亚洲SV
|
国内精品人人妻少妇视频|
377P欧洲日本亚洲大胆|
成人免费午夜性大片|
97操碰|
亚洲欧美一区二区不卡精品|
午夜福利10000|
午夜不卡欧美AAAAAA在线观看|
中文字幕高清免费日韩视频在线|
午夜爽爽爽|
精品久久久无码不卡|
国产精品免费久久久久软件
|
91精品网站天堂系列在线播放
|
丰满少妇被猛烈进入|
欧美成人在线免费观看|
国产精品手机在线亚洲|
国产av无码专区亚洲a√
|
制服丝袜在线视频香蕉|
国产成人污污网站在线观看|
韩国精品一区二区无码视频|
日韩中文字幕有码av|
亚洲AV无码不卡一区二区三区|