π rule

Measure tape also known as go/no-go gauge, refers to an inspection tool used to check a workpiece against its allowed tolerances via a go/no-go test. Its name is derived from two tests: the check involves the workpiece having to pass one test (go) and fail the other (no-go).

For Roll grooving machine, there are many groove standard, such as OGS, OGS-200, AGS, IGS, every standard has it’s A, B, C diameter, Tuwei measure tape is made according to OGS standard. The below is the OGS standard form.

How to use Tuwei grooved pipe tape to measure groove?

a) Remove all loose dirt, scale, and paint from the pipe surface. Choose the appropriate side of the tape. Wrap the tape around the pipe, and overlap the two ends, as shown below. Make sure the tape is not twisted

b) When using the tape to measure the outside diameter, firmly pull on each end of the over-lapped tape. Determine if the origin arrow is within the “Pipe OD Range” band for the applicable pipe size. The origin arrow must be within this band to meet specifications

Now every Tuwei grooving machine will come with one measure tape in the tool bag, in the toll bag, we always put one set sealing kit, one flat screwdriver and one cross screwdriver, several allen key and open-end wrenches, one measure tape as well. we provide them just for the convenience of customers, easy to get the tools, easy to replace the seal rings, easy to check the groove after operation!