SECTION 3 SURFACE TEXTURE

3.1 SCOPE OF SECTION This Section provides information on the indication of surface texture on

mechanical engineeringdrawingsandsimilar applications.For a more complete understandingof surface

texture, reference should be made to AS 2536.

3.2 SYMBOLS

3.2.1 Basic symbol The basic symbol is shown in Figure 3.1. The dimensions of surface texture

symbols are shown in Figure 3.2. Sloping lines in the symbol are at 60° to the horizontal.

3.2.2 Modification to basic symbol The following modifications may be made to the basic symbol:

(a) The symbol to be used where machining is mandatory shall be the basic symbol with a bar

added, as shown in Figure 3.3.

This symbol may be used alone to indicate that a surface is to be machined without defining

either the surface texture or the process to be used.

(b) The symbol to be used when the removal of material is not permitted shall be the basic symbol

with a circle added, as shown in Figure 3.4. This symbol may be used alone to indicate that a

surface is to be left in the state resulting from a preceding manufacturing process.

3.2.3 Extension of symbols When special surface characteristics are to be indicated (see Clause

3.4), the symbols shown in Figures 3.1, 3.3 and 3.4 may be extended by adding a line of appropriate

length to the long leg, as shown in Figure 3.5.

Australian Standard

Technical drawing

Part 201: Mechanical engineering drawing

Accessed by WOODSIDE ENERGY LTD on 21 Nov 2001

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