Thick-walled steel pipe refers to a steel pipe whose outer diameter to wall thickness ratio is less than 20. Common products include ASTM A106 seamless steel pipe, ASTM A53, etc. Mainly used as petroleum geological drilling pipes, petrochemical cracking pipes, boiler pipes, bearing pipes and high-precision structural pipes for automobiles, tractors, aviation, etc. Thick-walled seamless steel pipes have many quality requirements when used in some industries, so how should we identify the quality of thick-walled seamless pipes? Here are several methods.
1. High-quality thick-walled seamless pipes have uniform composition, high cold shear tonnage, and smooth and neat end faces of the cutting heads. However, due to the poor material, the end surface of the cutting head is often uneven and has no metallic luster. Moreover, due to fewer incisions made by fake and inferior material manufacturers, big ears will appear on the head and tail.
2. Inferior thick-walled seamless pipes have no metallic luster and are light red or similar to pig iron. There are two reasons for the production of steel billets. One is the irregular rolling temperature of inferior materials, and the other is visual inspection of steel temperature. When rolled according to the specified austenite area, the performance of thick-walled seamless pipes will naturally not meet the standards.
3. The material of fake and inferior thick-walled seamless pipes has many impurities, the steel density is low, and the dimensions are seriously out of tolerance. In the absence of vernier calipers, they can be weighed and inspected.
4. The cross-section of inferior thick-walled seamless pipes is oval because the manufacturer reduces the number of the first two passes of the finished roll in order to save materials. The strength of this steel bar is greatly reduced and inconsistent with steel bars. Standard dimensions.
5. The surface of inferior thick-walled seamless pipes is prone to scars.
There are two reasons:
① Inferior thick-walled seamless pipes have uneven materials and many impurities.
② The guide equipment of counterfeit and inferior material manufacturers is simple and easy to stick to steel. These impurities can easily leave scars after biting the roller.
6. The surface of inferior materials is prone to cracks because the blank is made of adobe. There are many pores on the adobe. The adobe will crack due to thermal stress during the cooling process, and cracks will occur after rolling.
The above are the six ways we can distinguish seamlessness in production and life. Only by understanding and understanding these can we choose pipes with good quality and reasonable price produced by good seamless pipe manufacturers.
Article source: https://article-realm.com/article/Business/61047-Quality-inspection-of-thick-walled-seamless-pipes.html
Reviews
Comments
Most Recent Articles
- Sep 14, 2024 Pursue Your Dream: A Complete Guide to MBBS in Nepal with Ria Overseas by Mbbsinblog
- Sep 14, 2024 MBBS in Moldova: A Gateway to a Successful Medical Career for Indian Aspirants by Mbbsinblog
- Sep 14, 2024 Explore Your MBBS Journey in Bulgaria: A Complete Guide by Ria Overseas by Mbbsinblog
- Sep 14, 2024 Acceptance Criteria for 304 Stainless Steel Pipes by Jane Tian
- Sep 14, 2024 Eliminate Allergens and Bacteria: Aircon Chemical Wash by coolcare
Most Viewed Articles
- 4070 hits Flexographic Printing Plates Market Size, Share, Report 2024-32 by ellyse perry
- 2458 hits Mist Sprayer Pumps Market Demands, Trends, Industry Analysis, Segmentation by 2032 by ellamrfr
- 1292 hits Plastic Bottles and Containers Market to Signify Strong Growth by 2024-2031 by mansi jain
- 797 hits Thin Wall Packaging Market to Witness Growth Acceleration by 2029 by faraz pathan
- 735 hits Air Traffic Control Equipment Market to Witness Robust Expansion by 2029 by faraz pathan
Popular Articles
In today’s competitive world, one must be knowledgeable about the latest online business that works effectively through seo services....
77365 Views
Are you caught in between seo companies introduced by a friend, researched by you, or advertised by a particular site? If that is the...
32685 Views
Walmart is being sued by a customer alleging racial discrimination. The customer who has filed a lawsuit against the retailer claims that it...
13682 Views
If you have an idea for a new product, you can start by performing a patent search. This will help you decide whether your idea could become the...
11084 Views
Statistics
Members | |
---|---|
Members: | 15316 |
Publishing | |
---|---|
Articles: | 63,054 |
Categories: | 202 |
Online | |
---|---|
Active Users: | 848 |
Members: | 13 |
Guests: | 835 |
Bots: | 9991 |
Visits last 24h (live): | 2153 |
Visits last 24h (bots): | 23057 |