{"id":20747,"date":"2024-04-29T16:11:23","date_gmt":"2024-04-29T07:11:23","guid":{"rendered":"https:\/\/futaku.co.jp\/?page_id=20747"},"modified":"2025-11-27T14:22:30","modified_gmt":"2025-11-27T05:22:30","slug":"inner-diameter-polishing-en","status":"publish","type":"page","link":"https:\/\/futaku.co.jp\/en\/technology-en\/polishing-en\/inner-diameter-polishing-en\/","title":{"rendered":"I.D Polishing (Bore polishing\/InternalPolishing)"},"content":{"rendered":"\n
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The inner surface of a nozzle or needle is sometimes required to have precise roughness or dimensions in order to control the amount of fluid flowing through it or to prevent impurity foreign elements from adhering to it. FUTA-Q can provide high-precision hollow-pipes for meeting this kind of requirements by combining various inner-surface polishing techniques as well as utilizing our unique pipe making and machining techniques.<\/p>\n\n<\/div>\n\n\n\n

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Inner polishing for small-diameter pipes<\/h2>\n
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The Inner diameter (ID) and surface roughness can be adjusted to the desired value through inner surface polishing.\nThe photos below show the polished results of a SUS316L pipe with 0.1 mm OD and 0.3 mm ID.\n<\/p>\n<\/div>\n

\"Inner<\/div>\n<\/div>\n<\/div>\n\n\n\n
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Cross section of commercially available small diameter pipe after I.D Polishing.<\/h3>\n

Enhancing roundness by Inner-Diameter Polishing<\/p>\n

\u2022\u3000SUS316L\u03c61.6\u00d7\u03c60.25<\/p>\n

\"Cross<\/a><\/p>\n<\/div>\n\n\n\n

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Method of polishing the inner surface of a small-diameter pipe <\/h3>\n

The list below shows the four pipe interior and part polishing methods available by FUTA\u30fbQ. <\/p>\n\n \n \n \n \n \n \n
Polishing method<\/th>\n Characteristics<\/th>\n Application<\/th>\n <\/tr>\n
Physical polishing<\/td>\n Fine tube polishing<\/td>\n Polishing method that directly polishes the inner surfaces of nozzle products and straight pipes with abrasive grains<\/td>\n Mass-produced products<\/td>\n <\/tr>\n
Special polishing<\/td>\n Method of polishing the inner surface of curved pipes or tapered pipes<\/td>\n Mass-produced products<\/td>\n <\/tr>\n
Buffing<\/td>\n Method of polishing the internal surface of a short pipe with a product surface and an internal radius \u03a64 or more.<\/td>\n Mass-produced products<\/td>\n <\/tr>\n
Chemical polishing<\/td>\n Suitable for parts of complex shapes.<\/td>\n Mass-produced products<\/td>\n <\/tr>\n <\/tbody>\n<\/table>\n

Method of melting metal surface, electrolytic polishing has problems with uniform finishing because the electrode positions in the pipe are shifted.
\nMagnetic polishing requires a large-scale device and a number of processes to remove residual abrasive grains in a small-diameter pipe. <\/p>\n<\/div>\n\n\n\n

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List of pipe materials small-diameter and abrasive specifications<\/h2>\n

The list below shows the specifications of I.D Polishing for small diameter pipes that can be mass-produced and available pipe lengths.
\nAs there are many types of metal materials handled, some of them cannot be listed. So the table below shows standard sizes.<\/p>

\nIn addition to SUS, we can also handle difficult to cut materials such as titanium and cobalt alloys.
\nAbout metal materials and ultra-small pipes not shown in the table, please feel free to contact us. <\/p>\n\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Materials of small-sized pipes (SUS304, SUS316L, \u03b2-titanium, pure titanium, MP35N\u203b, ELGILOY*, etc.)<\/td>\n<\/tr>\n
Gauge (G)<\/th>\nOutside diameter(mm)<\/th>\nInternal Diameter(mm)<\/th>\nLength \uff08mm\uff09<\/th>\nInner surface roughness (\u03bcm)<\/th>\nSUS<\/th>\nTi<\/th>\nCo alloy<\/th>\n<\/tr>\n
\uff12\uff16\uff27<\/td>\n0.45<\/td>\n0.23<\/td>\n230<\/td>\n\u2266Ra0.8<\/td>\n\u3007<\/td>\n\u3007<\/td>\n➖<\/td>\n<\/tr>\n
\uff12\uff15\uff27<\/td>\n0.51<\/td>\n0.26<\/td>\n230<\/td>\n\u2266Ra0.8<\/td>\n\u3007<\/td>\n\u3007<\/td>\n➖<\/td>\n<\/tr>\n
\uff12\uff14\uff27<\/td>\n0.55<\/td>\n0.30<\/td>\n230<\/td>\n\u2266Ra0.2<\/td>\n\u3007<\/td>\n\u3007<\/td>\n➖<\/td>\n<\/tr>\n
\uff12\uff13\uff27<\/td>\n0.63<\/td>\n0.33<\/td>\n230<\/td>\n\u2266Ra0.2<\/td>\n\u3007<\/td>\n\u3007<\/td>\n➖<\/td>\n<\/tr>\n
\uff12\uff12G<\/td>\n0.71<\/td>\n0.41<\/td>\n230<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n➖<\/td>\n<\/tr>\n
\uff12\uff11G<\/td>\n0.81<\/td>\n0.51<\/td>\n480<\/td>\n\u2266Ra0.06\n<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff12\uff10G<\/td>\n0.88<\/td>\n0.58<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff19G<\/td>\n1.06<\/td>\n0.70<\/td>\n480<\/td>\n\u2266Ra0.06\n<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff18G<\/td>\n1.26<\/td>\n0.90<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff17G<\/td>\n1.48<\/td>\n1.12<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff16G<\/td>\n1.61<\/td>\n1.25<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff15G<\/td>\n1.81<\/td>\n1.45<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff14G<\/td>\n2.11<\/td>\n1.69<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff13G<\/td>\n2.41<\/td>\n1.99<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff12G<\/td>\n2.76<\/td>\n2.40<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff11G<\/td>\n3.06<\/td>\n2.64<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
\uff11\uff10G<\/td>\n3.4<\/td>\n2.84<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n
Wall thickness<\/td>\n1.6<\/td>\n0.60<\/td>\n480<\/td>\n\u2266Ra0.06<\/td>\n\u3007<\/td>\n\u3007<\/td>\n\u3007<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n

\u203b Cobalt-alloy MP35N\u00ae is a trademark of SPS Technologies.
\n\u203b Cobalt-alloy ELGILOY\u00ae is a trademark of Elgiloy Specialty Metals. <\/p>\n<\/div>\n\n\n\n

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I.D. Polishing Achievements for Small-Diameter Pipes<\/h3>\n

We can also handle I.D. polishing for metal materials and ultra-fine pipes not listed here, according to your specifications.<\/p>\n

Small-Diameter Pipe Sizes<\/h5>\n

I.D. polishing is possible for pipes with a minimum inner diameter of \u03c60.1mm.<\/p>\n