How are qualified pipe fittings produced?

How are qualified pipe fittings produced?

If the finished pipe fittings are viewed from the outside, it is difficult to distinguish between good and bad quality, which is only known during the use process. Engineering quality pays attention to safety first, and once an accident happens, it will cause irreparable losses.

So how are high-quality and qualified pipe fittings produced? Mainly consider the following links:

1. The raw materials of pipe fittings are base materials: in order to manufacture qualified pipe fittings, qualified raw materials must be selected. That is to say, the steel pipes, steel plates and billets used for manufacturing pipe fittings must be products that meet the requirements of the corresponding national standards after inspection. In practice, in order to reduce production costs, bad manufacturers use pipes or other raw materials from unknown sources, some purchase engineering surplus materials, some purchase defective pipes and test machine products processed by steel mills, some purchase retired oil and gas transmission steel pipes that have expired, and some use low-grade steel instead of high-demand steel, such as seamless steel pipes of GB/T 8162 instead of seamless steel pipes of GB/T8163, and even welded steel pipes with treated welds instead of seamless steel pipes. All these have brought endless hidden dangers to the purchaser.

2. Die for producing pipe fittings: The pressing, extruding and forging of dies are indispensable in the forming process of pipe fittings, so factories are required to inspect various manufacturing dies frequently to minimize the defects such as strain and scratch in the forming process of pipe fittings.

3. Heat treatment of pipe fittings: The main functions of heat treatment are to relieve stress, reduce hardness, refine grains and improve structure and performance. For stainless steel, it means austenitizing. Especially cold-formed pipe fittings, all must be heat treated. However, small coal furnaces are still used for heat treatment in very small factories, and the work depends entirely on workers’ experience, and the furnace temperature is unstable and uneven, which cannot guarantee the heat treatment effect. 4. NDE for pipe fittings: National and international standards have corresponding provisions on NDE for formed pipe fittings. For example, the cold extruded tee must be 100% magnetic particle inspected, and the weld must be 100% radiographic inspected. However, because some factories do not have the testing power, are lucky or overconfident, they omit the essential nondestructive testing link, and do not find the major surface or internal defects of the products, which foreshadows the hidden dangers.

5. Preparation of pipe ends: Most pipe fittings will be welded with pipes or other pipe fittings at the project site. This requires that the roundness, thickness and groove of the pipe end must be excellent, otherwise it will bring difficulties to the welding in the project site, and then affect the welding quality of the project. Some people think that the wall thickness of our pipe fittings is not worse than that required by customers, so there should be no problem. As everyone knows, too thick end thickness will also make welding impossible on site.

Decho is a professional supplier on pipe fittings , if you have any request , pls donot hesitate to contact us by email [email protected]

12 replies
  1. Get Student Loans
    Get Student Loans says:

    Got my loans down to verbatim $126,000! ???? This 0% affect is undeniably friendly, truly seeing the amount go down, god if I had the greenbacks I’d principled pay it afar all then ??

    I’m agitated when the for the present comes and interest is subsidize on FedLoan it choose be wonderful puzzling to fee idle my loans, I heard inseparable girl owed 80k and then after she paid it mistaken she still owed 120k, like demiurge I fancy I don’t conclude up in a be like place ??

    Anyways it’s just slight seeing the realistic amount of cold hard cash go down, like I’m making progress representing fashionable ???? thought I’d dividend, not as depressed as ahead lmao

    where to get private student loans

    (This does not count up an extra student Sallie Mae lend of 30k my mom is paying on me bless her basics)

  2. assignment help online
    assignment help online says:

    The core of your writing while sounding reasonable initially, did not really work well with me personally after some time. Somewhere throughout the paragraphs you actually were able to make me a believer unfortunately only for a very short while. I however have got a problem with your leaps in assumptions and you might do nicely to help fill in those gaps. In the event you can accomplish that, I could surely be fascinated.

  3. cheap homework help
    cheap homework help says:

    Thanks for the marvelous posting! I seriously enjoyed reading it, you may be a great author.I will be sure to bookmark your blog and will eventually come back in the future. I want to encourage you to ultimately continue your great work, have a nice evening!

  4. help with assignments
    help with assignments says:

    Hey There. I found your blog using msn. This is a very well written article. I will be sure to bookmark it and come back to read more of your useful info. Thanks for the post. I will definitely comeback.

  5. cheap homework help
    cheap homework help says:

    Its such as you read my thoughts! You seem to know a lot approximately this, such as you wrote the ebook in it or something. I believe that you just could do with some percent to force the message house a little bit, but instead of that, this is wonderful blog. An excellent read. I will definitely be back.

  6. help with assignment
    help with assignment says:

    Thank you for sharing excellent informations. Your web-site is very cool. I am impressed by the details that you have on this blog. It reveals how nicely you perceive this subject. Bookmarked this website page, will come back for more articles. You, my pal, ROCK! I found simply the information I already searched all over the place and simply could not come across. What a perfect website.

  7. college homework help
    college homework help says:

    You actually make it seem so easy with your presentation but I find this matter to be really somethingthat I think I would never understand. It seems too complicated and very broad forme. I am looking forward for your next post, I will try to get the hang of it!


Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *