What does fishing rod 40t+30t mean?

40t+30t on the fishing rod indicates the grade of carbon fiber material.

Material is the main material that determines the grade of fishing rod. In the past, FRP was commonly used, but now carbon fiber is widely used, which is the core material for processing fishing rods-carbon fiber cloth.

Carbon fiber cloth can be divided into the following grades: below 30T, 30T—40T, 40T—60T, 60T—80T, etc. T (ton) is the index of carbon fiber, and the material of ordinary carbon fishing rod is generally 24T carbon fiber cloth. Some poles marked "HVF" refer to carbon fiber cloth with high modulus and strength of 30T—40T. "SVF(VCF)" means 40-60 tons, and "TCF" means 60-80 tons. The higher the t value, the higher the strength and elasticity of the material.

Taking 60T as an example, it means that carbon fiber cloth with different carbon content can bear the maximum tensile force of 60T per unit area, that is, the static tensile force of one square centimeter of carbon fiber cloth is not less than 60 tons, and the fishing rod made of higher tonnage carbon fiber cloth has stronger bearing capacity. The carbon content of fishing rod refers to the proportion of carbon fiber in the carbon fiber cloth used to make fishing rod, rather than the carbon content of the whole fishing rod, which is simply the distribution density of carbon fiber.