Metrology Cast Iron Angle PlateGMT CAST IRON ANGLE PLATE

Firstly, GMT has been the pioneer Cast Iron Angle plate manufacturer and exporter in India. Besides, GMT Cast Iron Angle Plates are made of high duty close-grained cast iron to IS: 210 Grade 20. Because they are well ribbed, which minimizes distortion, and are artificially seasoned as recommended in IS 2554: 1971.

Secondly, GMT Cast Iron Angle plates are offered in two grades, Grade-I and Grade-II. Further, they are manufactured in different sizes to meet a wide range of requirements. Both Grade-I and Grade-II plates are very carefully hand scraped to limits specified in IS: 2554: 1971. We offer plates finished to other standards also, such as JIS, DIN, BS and ASME.

Thirdly, a suitable number of T-Slots are available in one work face in plates of sizes 1 to 5 provided (See Serial Numbers in the table below). Besides, the other working surface has divided clamping holes. Furthermore, the T-Slots dimensions conform to IS:2013:1962. Also, sizes 6 and 7 are provided with elongated slots on both the working faces to facilitate clamping.

We offer precision-matched angle blocks as a convenient means of mounting and clamping workpieces for boring and milling operations.


  • Firstly, they are made from heavy, rigid section castings
  • Secondly, the working surfaces are hand scraped
  • Thirdly, the Length, Breadth and Height dimensions are maintained to close tolerances
  • Also, T-Slots are provided on the working surfaces to facilitate clamping


Deviation expressed in μm (0.001mm)

DIMENSIONS GRADE Flatness Squareness Parallelism Squareness
(LxBxH in mm) working faces exterior faces over dimension H of opposite faces & edges over their total length of end faces with respect to exterior faces as measured over dimension L
1000x900x1200 I 30 60 65 65
II 150 300 325 325
900x600x700 I 20 36 40 40
II 100 200 225 225
750x450x600 I 10 230 23 23
II 50 100 115 115
450x300x350 I 10 18 20 20
II 50 100 113 113
350x200x250 I 8 18 20 20
II 38 75 88 88
250x150x175 I 8 15 18 18
175x100x125 I 5 13 15 15

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