ges. API reference master thread gages are tested as required by the I specifications. The gages submitted should be marked with the API nogram and the API registration number if required. If not so marked, e information should be submitted with the gages and they will be marked. ges which meet the specifications will be marked as specified in the API andards. All thread gages must be submitted in sets of plug and ring. e name of the gage owner should be given for inclusion in the report. pies of all reports are sent to the American Petroleum Institute. ΑΡΙ andards may be obtained from the American Petroleum Institute, Corrigan wer Building, Dallas, Texas 75201. Fee is for single set of plug and 2.222.3a 2.222.3b API round thread casing and tubing plug and ring gage sets for API round thread casing and tubing plug and ring gage sets for 10 2.222.3c API buttress casing plug and ring gage sets for sizes up to inches-determination of dimensions specified in API standard 2.222.3d 5B. API buttress casing plug and ring gage sets for sizes over 10 inches--determination of dimensions specified in API standard 5B. 2.222.3e API extreme line casing plug and ring gage sets-determination of dimensions specified in API standard 5B. 2.222.3f 2.222.3g API extreme line casing periodic reinspection on plug and ring gage sets-determination of mating standoff, standoff from grand master gages, R and S dimensions as specified in ΑΡΙ standard 5B. API cable and rotary tool connection plug and ring gage setsdetermination of dimensions specified in API standard 7. 2.222.3h API cable and rotary tool connection plug 2.222.3i 2.222.3j plug and ring gages periodic reinspection-determination of mating standoff and standoff from grand master gages as specified in API standard 7. of API sucker rod plug and ring gage sets designated as p1, P2; P5, P6; P7, P8; B2, B1; and B6, B5-determination dimensions specified in API standard 11B. API sucker rod plug and ring gage sets designated as P3, P4 and B4, B3-determination of dimensions specified in API standard 11B. 212.222.3k ΑΡΙ sucker rod plug and ring gage sets for periodic reinspection designated as P1, P2; P5, P6; P7, P8; B2, B1; and B6, B5-determination of dimensions specified for reinspection in API standard 11B for any size. 212.222.3m 212.222.3z API sucker rod plug and ring gage sets for periodic reinspection designated as P3, P4 and B4, B3-determination of dimensions specified for reinspection in API standard 11B for any size. Special measurements not covered by this schedule. 212.222.4 Master gears. Master gears and high precision working gears can be inspected for tooth spacing, involute profile, and lead. Tests may be made on setting masters for gear testing equipment such as involute masters and lead masters. A11 such equipment should be supplied with a reference diameter for the definition of the center. in tape 212.222.4a Tooth index measurement-calibration results recorded form with with each tooth location represented by a plateau and another tape taken simultaneously of the reference diameter location during the tooth index calibration. Gears, master gears, gear cutters, and index plates, from 0.125 to about 8.0 in. diameter and from about 24 to 500 teeth. The maximum overall length of the part must be less than 3 in. Suitable reference and calibration surfaces must be available to obtain the estimated accuracy of ±3" of arc. The cost of any needed adaptors will be added to the calibration cost, if made by the Bureau. Gears of 71 teeth or less. 212.222.4b Measurement as in 212.222.4a, gears of 72 teeth or more. 212.222.4z Special measurements not covered by this schedule. calibration. 212.223 Length and diameter measuring instruments. Some types of length measuring instruments are accepted for These instruments include micrometer calipers, vernier calipers, plain snap gages, micrometer screws, dial micrometers, and other similar items. 212.223.1 Length and diameter calipers. In addition to the scheduled items, plain snap gages, vernier calipers, and other similar devices may be accepted for calibration. 2.223.la Micrometer calipers-determination of errors at 10 points selected to test uniformity of graduations as well as lead errors. Also determination of planeness and parallelism errors of contact surfaces for 0 to 1 inch size only. Accuracy of 0.000 05 in. 2.223.1z Micrometers larger than those listed above and other special measurements not covered by this schedule. 212.223.2 Length measuring elements. dial Length measuring elements such as micrometer screws, crometers, and other length-transducing systems are included in this hedule. Item 2.223.2a 2.223.2b 2.223.2z Description Micrometer screws-determination of errors at 10 points selected to test uniformity of graduations as well as lead errors for one inch range within 0.000 03 or greater, dependent upon the quality of the screw. Dial micrometers-determination of errors in each one-tenth revolution of the pointer for one revolution, and each halfrevolution up to five revolutions. In the case of dial micrometers, the accuracy obtainable depends on the value of the smallest division on the dial and on the mechanical condition of the instrument as evidenced by the degree to which it will repeat its indications. Special measurements not covered by this schedule. 212.224 Instrument components requiring dimensional control. Some instruments such as penetration needles, polariscope bes, and Knoop indenters contain elements which require dimensional atrol of lengths and angles. 212.224.1 Penetration needles. with Penetration needles and cones are tested for compliance M specifications and supplied with individual labels so stating. All dles must have individual identification numbers; needles received hout identification will be marked for a fee. Penetration needles-measurement for compliance with ASTM dimensions. Specification D5-61 without reporting actual 212.224.1b 212.224.1c for compliance reporting Petroleum wax penetration needles-measurement Penetration needle numbering-marking of individual identification numbers. 212.224.1z Special measurements not covered by this schedule. 212.224.2 Polariscope tubes. Item Description observation 212.224.2a Determination of the average length of polariscope tube and and marking with NBS serial number if length is within ±0.03 mm of nominal length for 100 to 200 mm tubes and ±0.04 mm for 400 mm tubes. 212.224.2z Special measurements not covered by this schedule. 212.225 Flatness and straightness. Reference surfaces of flatness and straightness such as optical flats, surface plates, and straight edges can be calibrated under this schedule. 212.225.1 Optical reference planes: Flats. Optical reference planes are tested interferometrically, horizontally supported with test surface supported on three equally spaced pads located at 0.7 of the radius from the center. The measurement is performed along two marked diameters at 90° to each other on each surface when each diameter is parallel to two of the support pads. 212.225.1a Determination to an accuracy of ±0.000 000 5 in. for sizes exceeding 6 in., per surface. 212.225.1b 212.225.1c Determination not to an accuracy of ±0.000 000 5 in. for sizes larger than 6 in. but not exceeding 8 in. in diameter, per surface. Determination to an accuracy of ±0.000 000 5 in. for sizes larger than 8 in. but not exceeding 10 in. in diameter, per surface. 212.225.1z Special measurements not covered by this schedule. aightness hniques. the The straightness of specified lines on surface plates and straight edges are calibrated by optical and mechanical .225.2z Because of the wide variety of sizes and qualities encountered, surface plates and straight edges are calibrated as special measurements only. 212.226 Roundness. In addition to the measurement of the deviation from roundness round parts, instrument calibration standards for roundness measurement ipment can be calibrated. 212.226.1 Roundness standards. The deviation from roundness at 8 or more specific positions und these nominally round standards is determined. tem Description .226.1z Roundness reference standards are calibrated as special measurements. 212.226.2 Roundness calibration specimens. The size of the calibration step or deviation from roundness on se instrument calibration standards is calibrated. tem Description 1.226.2z Roundness calibration specimens are calibrated as special measurements. 212.226.3 Roundness measurements. The departure from roundness of components and gages can be sured. The results are reported in graphical form. tem Description 226.3z Roundness measurements are made as special tests. |