1. Visual label, the label thickness of stainless steel pipe fittings is generally false label thickness, often the actual thickness is marked on the label number, but there will be a certificate on each package of pipe, and the label on the certificate is the actual thickness of production.
2. Use vernier calipers, but the thickness error of this measuring tool used to clamp is relatively large. The thickness of stainless steel thin-walled pipe is relatively thin, and the error has a positive or negative thickness of several wires, which also has a greater impact on the price.
3. With micrometer, this measuring tool is more accurate, but it is more troublesome for many customers, and the thickness of stainless steel pipe will be uneven in the production process, so to identify the thickness can only see a single pipe.
4. Overweight weight, the thickness of stainless steel pipe fittings can be judged according to the overweight weight. Whether you are a layman or a layman, you can deduce the thickness by weight. The actual thickness can be known by checking the gauge thickness scale and the actual overweight weight. Of course, the thickness can also be estimated by the weight calculation formula of stainless steel pipe. Weight calculation formula of stainless steel pipe fittings
Formula for calculating the weight of stainless steel pipe:
1. Stainless steel pipe (fittings): (outer diameter-thickness)* thickness * length * 0.02491. For example, the theoretical weight of 0.9 solid thickness of 6 m 51 pipe is (51-0.9)* 0.9 * 6 * 0.02491 = 6.74.
2. Stainless steel square pipe: (outer diameter * 4/3.14-thickness) * thickness * length * 0.02491. For example, the theoretical weight of 0.9 solid thickness of 6 m 25 square pipe is (25 * 4/3.14-0.9) * 0.9 * 6 * 0.02491 = 4.16;
3. Stainless steel rectangular tubes (fittings): [(length + width) * 2/3.14-thickness] * thickness * length * 0.02491, case 6 m 30 * 10 square tubes 0.9 theoretical weight is [(30 + 10) * 2/3.14-0.9] * 0.9 * 6 * 0.02491 = 3.31;
In the formula, the unit of outer diameter and wall thickness is millimeter (m m), the unit of pipe length is meter (m), and the unit of weight calculated is kilogram (kg). The calculated weight is the theoretical weight of the pipe. When the tolerance of the outer diameter and wall thickness of the pipe is very small, the difference between the actual weight and the actual weight is not large. Therefore, when purchasing stainless steel pipe fittings, the transaction sheet with relatively large volume needs to be used to actually weigh.