Stainless steel welded pipe flattening test positioning device

A stainless steel welded pipe flattening test positioning device is characterized by comprising a base (1), a centering caliper (3) and a scale (2), wherein the scale (2) is vertically fixed on the base (1); scale values (21) are vertically distributed on the scale (2); the centering caliper (3) is arranged on the scale (2) in a vertically sliding manner; and a positioning mechanism which can locate the centering caliper (3) in any position of the scale (2) is arranged between the scale (2) and the centering caliper (3). Compared with the prior art, the utility model has the advantages that because the welding seams of flattened pipes with different pipe diameters are arranged on the outermost side, the cracking of the welded pipes can be directly, quickly and accurately indentified; and the device has convenient operation and easy positioning and completely satisfies the expected target requirements. Through four-month test run, the positioning device has good effect, is mature in all aspects and remarkably