You should get some foam pipe insulation for the short galvanized pipe and the few feet of hose that is exposed to the outside.
暴露在外的镀锌短管以及数英尺的软管要用泡沫隔热材料予以包扎。
2
Exposed flange faces and pipe threads shall be protected from chemical solutions.
暴露的法兰面和管螺纹应保护好，以避免受到化学溶剂的腐蚀。
3
Based on the meterial and heat balance calculation of single pipe reactor technology, some problems resulting in high ammonia consumption are exposed in the DAP plant.