What is a STKM 11A / STKM 12A Steel Tube

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The use of STKM11A tubes:

STKM 11A tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts. Our commonly used STKM11A tubes have an outer diameter ranging from 3mm to 20mm.

Visit our website: STKM 11A Carbon Steel Tubes Inspection

STKM 11A tubes detection method:

The STKM 11A tubes is mainly non-destructive testing, the most commonly used are ultrasonic testing and industrial endoscopy testing. The use of ultrasonic waves to detect STKM 11A tubes is through the interaction of ultrasonic waves and STKM 11A tubes to study the radiance of reflection, transmission and refraction to achieve the purpose of detecting seamless steel tubes.

How to identify the quality of STKM 11A tubes:

1. Whether the surface of STKM 11A tube is smooth?

Due to the raw materials used, inferior shaped STKM 11A seamless steel tubes, unprofessional technical methods, and low cost, surface inferior shaped STKM 11A seamless steel tubes will have surface folding, pitting, scarring, cracks, and easy scratches. Generally, this situation can be passed Visual inspection revealed.

Therefore, it is recommended that the majority of consumers encounter these situations, and they must be treated rationally. Do not buy inferior square tubes for the sake of cheapness. The strength and hardness of these special-shaped seamless steel tubes do not reach the standard, which will affect their future use.

2. Whether the surface of STKM 11A tube has metallic luster

Some inferior STKM 11A seamless steel tubes are made of adobe, and the temperature is not standard. The steel temperature is grasped by visual inspection, so that the rolled steel will show the color of reddish or pig iron. There is no metal gloss and performance of genuine seamless steel tubes Not to mention the above.

3. Whether the cross section and the cutting head of STKM 11A tube are smooth

In order to save raw materials, the inferior STKM 11A seamless steel tube has a large reduction in the first two passes of the finished roll, resulting in an elliptical cross-section. The inferior square tube often has a flesh-off section on the cut section, that is, unevenness. Therefore, once you find that the cross section of the square tube is oval and the cut head is uneven, you should be alert. This is a poor-quality square tube.

4. Whether the size and weight of STKM 11A tube are qualified

In general, the inferior and irregular shaped STKM 11A seamless steel tubes have large fluctuations in size, and in order to save raw materials, most of them are not enough in weight. Therefore, you can look at the national standards and sizes in advance when purchasing square tubes. Square tube size and weight.

Conclusion:

The price of STKM 11A tube is affected by many aspects, such as specifications, quantity, market, etc. Before choosing to buy, it is necessary to understand and compare in many ways. It is recommended that you start with a trial order for the first time to avoid large losses caused by the purchase of inferior STKM 11A tubes.

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