Is No.8 paper the same as A3 paper?

8 paper opening is different from A3 paper.

8 The opening size is 260× 370mm, the width size is 420× 285mm .. and the size of A3 paper is 297×420mm.

The normal 8-seam size is: 270mm×390 mm for white material and 260mm×370 mm for finished product. The size of the page is called folio, and folio is based on the whole paper. How many small pieces of paper are cut into a pair on each whole piece of paper? China used to name folio with geometric series. The size of the folded paper is folio, then folded into 4 sheets, then folded into 8 sheets, then folded into 16 sheets, then folded into 32 sheets, then folded into 64 sheets, and so on.

According to the international standard A3, the paper size is 297mm×420mm, which is twice that of A4 paper. According to the national paper format industry standard (GB/T 1999), it is also called "Big 8 format".

Extended data

Paper format

Fully open: positive degree 787* 1092mm, generous degree 889 *1194 mm.

Reverse: positive degree 787*546mm, generous degree 889 * 597 mm.

Orthogonality: Orthogonality is 389*546mm, width and thickness are 444 * 597 mm.

Six points: 370*520mm positive, 420*285mm generous.

Octagonal shape: positive degree 260*370mm, generous degree 420 * 285 mm.

Hexagonal division: positive degree 185*260mm, generous degree 210 * 285 mm.

Thirty-two quarts: positive 185* 130mm, generous 142*2 10mm.

A0:1189mm× 841mm.

A 1:84 1 mm× 594 mm

A2: 594 mm× 420 mm