Butyl polymer is used as the insuation and coloring for the installing and layingwork.
绝缘线芯分色，为敷设安装提供方便。
2
At every important link, there presented technical requirements and relevant measures, so as to make the layingwork to be carried out successfully.
在各个环节，提出相应的技术要求和措施，保证了沉管敷设工的顺利进行。
3
Layingwork is completed, due to the natural adhesive was still drying process, so wet cleaning work must be thoroughly dried after the adhesive (approximately 48 hours) before proceeding.