![]() ![]() Stainless steel pipe has always had the advantages of stability, safety, green environmental protection, and low economic success, On this basis, thin-walled stainless steel pipe has made more advantages through the renewal of scientific and technological methods. Compared with traditional welding, the flange connection mode of thin-walled pipe is not only firm but also has no welding scar, which looks more beautiful. Stainless steel pipe has a variety of connection modes. In addition, in terms of cost control, if the wall thickness of stainless steel pipe is thin, its weight is light and the relative cost is low With low cost, high performance, and environmental protection, it is a pipe that people are willing to accept.Īnother advantage of thin-walled stainless steel pipe is the connection mode. Therefore, it can be widely used in engineering construction. This shows that thin-walled stainless steel pipe, as new pipe material, can play a good role in energy conservation and environmental protection. Because of the corrosion resistance of stainless steel pipes, the safety of water quality is guaranteed to a certain extent. ![]() ![]() Compared with ordinary stainless steel pipe, the utility of thin-walled pipe is added a lot. The particularity of thin-walled stainless steel pipe is that it thins the pipe, and on this basis, develops and innovates a simple and safe connection mode. In particular, the price of small-diameter stainless steel pipe is not high, so the supporting connection method, the reliability, and the price of pipe fittings are the main factors determining its development. Out of roundness, sometimes referred to as ovality is tube or pipe on the same cross-section of the outer diameter, roundness or ovality is difference between the maximum and minimum dimensions of outside diameter, is carefully measured the high and low points at any one section of the tube or pipe.Thin-walled stainless steel pipe is durable and recognized by the engineering community, and the parties concerned are starting with the wall reduction and price reduction, so as to facilitate further promotion. it is more reasonable that the American standard specify the OD tolerance is tight, compared to thickness tolerance.Ĭhina GB standards and EU standard have no weight tolerance specified, seamless tube & pipe in GB standard delivery goods as actual weight or theoretical weight, welded tube & pipe as theoretical weight or actual weight. Stainless steel tube & pipe outer diameter tolerances are mostly lower than American standards, and approaching the EU standards. Stainless steel tube & pipe wall thickness tolerance are the same as the general accuracy of American ASTM / ASME and EU standards, but slightly lower than the high requirements of the EU standards. SS tube and pipe standards are similar with EU standards in system, and absorb favorable experience in USA specifications. China StandardsĬhina has more quantity standards compared to European standards, but less than american standards, Wall thickness tolerance should be +/-10%t or better, and average thickness tolerance should be ( +/-20 – 22%t, 0 ), pipeline pipe has a larger tolerance, hot finished seamless pipe largest. #Stainless steel pipe isoASTM A999īut A511 for seamless stainless steel mechanical tubing and A554 welded stainless steel mechanical tubing not conform to above standards, they have separate outside diameter and thickness tolerances.Īmerican standard outside diameter tolerance mainly used to represent the absolute value, over and below tolerances are often asymmetric, SS tube and pipe in American standard average tolerance can reach even higher than D4 class in EN ISO 1127 standard. America StandardĪmerica standard has two standard rules to specify outside diameter and thickness, ASTM A999 / A999M and A1016 / A1016M. #Stainless steel pipe seriesThe tolerances on outside diameter and thickness from above table, greater value shall be selected.ĮN 10312 has specific values in table series 1 and series 2. From D1 to D4 class for outer diameter, and T1 to T4 for wall thickness tolerance comply to DIN EN ISO 1127 standard, stainless steel tubes – Dimensions, tolerances and conventional masses per unit length. ![]()
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