▎ 摘　　要

NOVELTY - Polybutylene composite pipe, comprises an anti-corrosion outer layer, a thermal insulation layer and a working inner layer from the outside to the inside. The working inner layer is made of polybutene material. The insulation layer is made of polyethylene foamed plastic. The anti-corrosion outer layer is made of high-density polyethylene material. The high-density polyethylene material includes 90-100 pts. wt. high-density polyethylene, 0.1-0.5 pts. wt. antioxidant, 0.1-0.5 pts. wt. ultraviolet absorber, 0.1-0.5 pts. wt. dispersant, 3-8 pts. wt. anti-impact agent, 4-8 pts. wt. allicin, 1-10 pts. wt. capsaicin and 0.05-0.2 pts. wt. fluorescent agent. USE - The polybutylene composite pipe is useful in hot spring transportation (claimed). ADVANTAGE - The polybutylene composite tube has excellent compressive strength, weather resistance and stress cracking resistance, long service life, good heat preservation property, good flexibility, can be connected and installed by hot melting method, easy construction operation, installation cost and maintenance costs reduced, and is an ideal hot spring conveying pipe. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparation method of polybutylene composite pipe; and (2) a hot spring conveying pipe. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the polybutylene composite pipe in hot spring transportation.