News Center

  • 1
  • 2
  • 3
  • 4
  • 5
  • 90 degree male-female thread elbow,moulding body
  • socket weld union
  • male-female thread union
  • female thread cross
  • male-female thread union
Contact Us
Wenzhou Huiyi Valve and Fittings Co.,Ltd
Tel:0086-0577-86998027
Fax:0086-0577-86998037
Contact Person:Mr.Tony Zhang 
Skype:huiyivalve
Whatsapp:
   +8618057736259 +8615167401934
Wechat:huiyivalve、angelzhang520
QQ:3097428386 1822821013
Email:
   sales@nunuzu.com 
   info@nunuzu.com
Website:
   nunuzu.com
   www.huiyivalve.en.alibaba.com 
The quality problem … The Current Position:Home >> News  

The quality problem of threaded fittings

Addtime:2016.05.19
  Screw thread pipe fittings exist a lot of problems, many characteristics will affect our screw thread pipe fittings quality problem when we found that the time of the existence of these characteristics, we want to know about our products which have a problem.

  In essence, the crack sensitivity depending on steel, but it and molten steel quality, cooling system, solidification structure, casting billet should force and so on. Such as Cr-Ni stainless steel, the final microstructure is austenite, the micro segregation is serious. Cr does not induce the solidification microstructure of the steel is ferrite, the segregation is light, and the crack sensitivity is poor.

  The characteristics of different kinds of steel performance is not the same. To enable continuous casting stainless steel to obtain the success, mainly rely on the solidification of basic characteristics and to deepen the understanding, so that continuous casting product quality more than the corresponding ingot product quality.

Previous:

Next:

快乐飞艇做任务靠谱吗 快乐飞艇开奖结果 快乐飞艇综合走势图 快乐飞艇计划 华创投资快乐飞艇靠谱吗 熊猫乐园快乐飞艇 快乐飞艇官网 快乐飞艇app首页 快乐飞艇开奖 快乐飞艇技巧 快乐飞艇彩票 快乐飞艇app下载