factory price erw cold rolled pre galvanized gi pipe in China Dongpengboda

 Our pipe package usually uses excellent material of double silicone, good toughness, anti rub, as well as good waterproof effect. We usually use the steel strips of 1.2mm in thick and 32mm in wide for galvanized pipe package. Meanwhile, we use a number of strong packing belt, and try to avoid the loose package in the conveyance of  loading or unloading. As a rule, our pipes are packaged with a total of 9 pieces of steel straps for 6m pipe, and a total of 11 pieces for 12m pipe. Besides, we use strong nylon hoisting belts in order to keep loading and unloading safer.

Our pipes undergo a Chromic Acid  passivation treatment for the surface of galvanized steel pipe. As a rule, hydrogen treatment and passivation treatment are the two major methods for the final effective painting treatment of galvanized pipe, in order to further improve the corrosion resistance of the zinc layer or maintain the original property of the coating. Furthermore, it also helps to prolong the durable years of the pipes. Generally speaking, our pipes can be used for at least 3 ~ 5 years, sometimes even up to 20 years. In that regard, there alsohas much to do with the specific environment in the actual applications.