为了不引起异议,建议严格按标准。如HG20615上指出密封水线仅用于软垫片;
B16.5 的6.4.6条“Either a serrated con- centric or serrated spiral finish having a resultant surface finish from 3.2 to 6.3 pm (125 to 250 Fin.) average roughness shall be furnished. The cutting tool employed should have an approximate 1.5 mm (0.06 in.) or larger radius, and there should be from 1.8 grooves/mm through 2.2 grooves/mm (45 grooves/in. through 55 grooves /in.)”.
原帖由 memory 于 2008-7-3 12:27 发表
为了不引起异议,建议严格按标准。如HG20615上指出密封水线仅用于软垫片;
B16.5 的6.4.6条“Either a serrated con- centric or serrated spiral finish having a resultant surface finish from 3.2 to 6.3 pm (12 ...