JIS G3459 Standard specifies the stainless steel pipes (hereafter referred tp as "pipes") used for the pipings for corrosion resistance, low temperature service, high temperature service, etc. SUS316L is One of the steel grades in JIS G3459 standard. The eccentricity means the ratio of the difference between maximum and minimum wall thickness measured in the same section to the specified wall thickness, and this shall not be applied to pipes under 5.6mm in wall thickness. As for the portions locally ground or the like, the above tolerance on outside diameter shall not be applied if it is confirmed that the wall thickness is within the tolerance range given in the above table. JIS G3459 SUS316L Pipes shall be straight for practical purposes, and their both ends shall be at right angles to the axis. The inside and outside surfaces of the JIS G3459 SUS316L pipes shall be well finished, and free from defects detrimental to practical use. Method of manufacture of pipes shall be manufactured by a seamless process, an automatic arc welding process, a laser welding process, or an electric resistance welding process.