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How to Identify the Quality of Round Bar?

Dec 30, 2016

BIG Co.,Ltd is good manufacturer and supplier of Round Bar and steel pipe in China, we supply high quality products with best price. Then how to distinguish its quality? Six points to see and one point to listen:

1. Look at the appearance, size, color and size. According to property of round bar, it should have neat specification, size specifications, unadulterated surface, uniform color.

2. Look at the hardness. Steel pipe’s hardness is not the same, according to hardness of steel pipe properties to determine whether it is our need steel or not?

3. Look at the size. Low quality round bar is uneven and has different size. Using micrometer or tape can measure the size fluctuation amplitude.

4. Look at the elasticity. Different round bar has different toughness and elasticity, the surface of low quality round bar has poor flexibility and cracks.

5. Look at the nameplate of the round bar. Good Round Bar Manufacturer has normative nameplate, clearly description and its data parameter base on the evidence.

6. Look at the quality reports of steel pipe, whether it is standardized or not?

7. Listen. If you have experience, you can according to the sound of round bar to identify its quality. The sound of good round bar is clear and free from noise.

Round Bar


  • E-mail: wen@cn-big.com
  • Tel: +86 010 5246 1208
  • Fax: +86 010 5140 6975
  • Add: Tongzhou District, Beijing, China

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