中山桥面栏杆厂家 铸铁桥梁钢板立柱 深圳河道护栏

详情描述：

中山桥面栏杆厂家 铸铁桥梁钢板立柱 深圳河道护栏
Zhongshan Bridge Deck handrail manufacturer cast iron bridge steel plate column Shenzhen River guardrail

不锈钢复合管：材质为铁管，外面包裹着不锈钢层。

Stainless steel composite pipe: the material is iron pipe, and the outside is wrapped with stainless steel layer.

比较坚固，管口封闭良好的情况下可保证其防锈期限与纯不锈钢无异。

It is relatively solid and can guarantee its rust proof period is the same as that of pure stainless steel when the nozzle is well sealed.