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Method for measuring thickness of stainless steel pipe fittings
1. Intuitive label, the label thickness of stainless steel pipe fittings is generally the thickness of the virtual standard. Often the actual thickness is the remarks on the work number, but there must be a certificate on each package of the pipe. The label on the certificate is the actual thickness of the production.
2, the use of vernier calipers, but this measurement tool used for card thickness error will be relatively large, the thickness of stainless steel thin-walled pipe fittings is relatively thin, the error appears a thickness of positive and negative wire, the price is also a relatively large impact.
3, with a micrometer, this measurement tool is more accurate, but for many customers is more troublesome, and the thickness of the stainless steel tube will be uneven in the production process, so to identify the thickness can only see a single tube .
4, the weight of the pound, the thickness of the stainless steel pipe can be judged according to the weight of the pound, whether you are a layman or a layman, you can infer the thickness by weight. The actual thickness can be known from the thickness gauge and the actual weight of the gauge. Of course, the weight calculation formula of the stainless steel tube can be used to estimate the thickness. Formula for calculating the weight of stainless steel pipe fittings
Stainless steel tube weight calculation formula:
1, stainless steel round pipe (pipe fittings): (outer diameter - thickness) * thickness * pipe length * 0.02491, the theoretical weight of the case of the 6 m 51 round pipe 0.9 solid thickness is (51-0.9) * 0.9 * 6 * 0.02491 = 6.74;
2, stainless steel square tube: (outer diameter * 4 / 3.14 - thickness) * thickness * tube length * 0.02491, the theoretical weight of the example 6 m 25 square tube 0.9 real thickness is (25 * 4 / 3.14 - 0.9) * 0.9 * 6 *0.02491=4.16;
3. Stainless steel rectangular tube (piece): [(length + width) * 2 / 3.14 - thickness] * thickness * tube length * 0.02491, the theoretical weight of the example 6 m 30 * 10 square tube 0.9 solid thickness 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 (mm), the unit of tube length is meter (m), and the calculated weight unit is kilogram (kg). The calculated weight in the calculation method is the theoretical weight of the pipe. When the tolerance of the outer diameter and the wall thickness of the pipe is small, the actual weight is not much different. Therefore, when purchasing stainless steel pipe fittings, a relatively large trading order is required. Actually weighed.