GRP tube

7. economical price--much cheaper than steel pipe

6. long service life--over 40 years normally

5. Smooth surface--no bubbles, scratches, delaminations, dry fibers

4. undertake critical temperature--working temperature ranges from 170-130degree

3. Light weight--1/5 of steel, 1/10 of concrete and easier installation

2. High strength--higher than steel pipe

1. Corrision-resistant--no extra coating and gunniting needed

Functions,

GRP tube