Steel pipe is the most common, but fiberglasspipe, cement-lined steel pipe, and flexible plastic pipe are also used.
出油管线最普遍地由钢管组成,不过也使用玻璃纤维管、水泥衬里钢管以及柔性塑料管。
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Insulate any pipes that run through unheated crawl Spaces. Wrap them with fiberglass insulation and tape or put preformed pipe sleeve insulation along the pipes, then tape the sleeves in place.
Check any pipes that run close to outside walls. Put some fiberglass insulation or rockwool between the pipe and the wall to help keep the cold away from the pipe.