The mechanics character of wall rock distinctly affects suffered force and distortion of pipeliner structure.
围岩的力学性质对管片衬砌结构的受力和变形有较大的影响。
2
Conventional unbonded flexible pipe designs are a multi-layer construction based upon a thermoplastic pipeliner reinforced with metallic materials.
常规的无粘结柔性管采用的是多层构造，主要为金属材料增强的热塑性管道衬里。
3
The NP-160 product as an example, add a vacuum tube into 25 branches, while remaining 4mm pipeliner connecting hole is too narrow, obviously can not guarantee the quality of the water tank.