林雅诗三级未删减电影_驯服少爷漫画免费观看下拉式漫画_互攻互受4p开火车_女人叫床很黄很污句子_被猛男狂cao的小男生_清冷师尊被迫张开双腿_大尺度床戏无遮观看免费软件_再深点灬舒服灬太大了男小_国产在线观看一区二区

　　Product type: cement test pile

　　Product details:

　　Cement test pile is mainly customized according to customer needs, generally suitable for easy theft places, because in some areas of the steel pipe test pile often stolen, and the cement

　　test pile because of its own use value is not high, so it is generally not easy to be damaged.

　　According to the needs of the market, our company independently developed and produced the second generation of rainproof test pile, inherited the previous generation of excellent

　　design concept, the door shaft is made of stainless steel. Test pile detection mouth with rain eaves, prevent rain intrusion; The test pile test door is provided with a special open key,

　　Prevent abnormal opening. At the same time, it also has the advantages of anti-theft, strong, durable and beautiful. It is suitable for cathodic protection of buried metal pipelines in

　　different industries such as natural gas, liquefied petroleum gas, petroleum, refined oil, artificial gas, chemical industry, water conservancy and tap water.

　　It is also applicable to cathodic protection of underground structures in cities (such as buried metal pipe network, oil field pipe network and long distance buried metal pipeline).

　　Can be customized according to customer requirements of special specifications of the test pile.