在线视频区I欧美激情性生活I中文字幕综合在线I致命魔术电影高清在线观看I草草久久久无码国产专区I日本人体一区Iav专区在线观看I国产色aI好男人网站www久久久I成人精品一区二区三区I91香蕉视频污污I婷婷深爱I永久免费未满蜜桃I日韩无码精品一区二区三区I老司机午夜影院I天堂av成人I日韩av一级电影I尤物视频免费在线观看I黄色免费成人I成年人网站免费视频I91精品视频免费看I99久久久无码国产精品性青椒I操爽爽Iaaa在线I波多野结衣无码久久I男女插插插视频

HPVC-double wall corrugated pipe

The High Strength Double Wall corrugated pipe has a hollow ring structure between the inner and outer walls, making full use of the principle of I steel structure to improve the Cross section, the moment of inertia and the ring steel degree. The product has the strength high, the toughness is good, the texture light and so on merit. The products can replace MPP single-wall corrugated pipes, glass steel pipes, PVC-C power pipes, PVC-U communication pipes and other pipes.

092514_187.jpg


Product performance

2222.jpg


Specification type:

3-1111.jpg

4-111.jpg

4-1111.jpg


?
為您報(bào)價(jià)