Paper tube weight 15mm wall thickness

Paper tube weight 15mm wall thickness algorithm: the formula for calculating the weight of paper tube: weight = (inner diameter + wall thickness) * inner * 314 * 0.77 * 1.1 * length. Paper tube: paper with paper processed into a tube-like object. Most of the paper tube for spiral paper tube and seamless paper tube. Paper tube use: 1, chemical fiber industry tube dty tube, poy tube, fdy tube, spandex tube, spandex tube, spandex coated yarn tube, 2, film industry tube bopp, pet, pvc, bopa, cpp, agricultural film, plastic film, film, winding film, plastic bags with tube (supermarkets), aluminized film, electrical capacitor film, C film, film, printing industry tube is mainly used in the rolls of drums and barrels, film printing, paper printing 4, papermaking printing, paper printing. Printing, paper printing 4, paper industry tubes newsprint, yarn tube paper, whiteboard paper, fax paper, bill paper, cork paper, aluminum paper, writing paper, color parchment, cup paper, Tetra Pak, other 5, metallurgical industry tubes, aluminum, steel, iron and other coils 6, packaging tubes, medical equipment, paintings, paintings, food cans and other outer packaging