3PE防腐鋼管罕見成績
Rare Achievements of 3PE Anticorrosive Steel Pipe
3PE防腐鋼管主體直管是在工廠停止防腐層預(yù)制，預(yù)留補口段，然后到現(xiàn)場停止焊接，再用熱膨脹套或熱膨脹帶補口，關(guān)于彎管局部，目前采用較多的工藝是用熱縮纏繞帶停止同等級3PE防腐，但是這樣防腐工藝缺陷是無法機(jī)械化流水線施工，只能人工纏繞，比擬耗時，且資料費用也很高，而且施工質(zhì)量對防腐的質(zhì)量是有很大影響的，質(zhì)量控制比擬難。目前有的設(shè)計單位開收回了新型的雙層環(huán)氧外加防腐膠帶的防腐工藝。這項工藝充沛應(yīng)用了低溫熔結(jié)環(huán)氧粉末的優(yōu)良的防腐功能，而且可采用機(jī)械噴涂，外加的防腐膠帶造價也比擬低，這樣構(gòu)成以來，外纏繞的防腐膠帶就可以作爲(wèi)涂層的外維護(hù)構(gòu)造，可以無效消弭雙層環(huán)氧粉末涂層厚度薄，容易零落和碰掉而讓防腐層生效的缺陷。
The main straight pipe of 3PE anticorrosive steel pipe is to stop the anticorrosive layer prefabrication in the factory, reserve the filling section, then stop welding at the site, and then use the thermal expansion sleeve or thermal expansion belt to repair the joint. As for the bending pipe, at present, more technology is used to stop the same grade of 3PE anticorrosive with thermal shrinkage winding belt. But this anticorrosive technology defect is unable to mechanize the pipeline construction, only manual winding, which is comparatively time-consuming. Moreover, the cost of data is very high, and the quality of construction has a great impact on the quality of anti-corrosion, so the quality control is difficult to compare. At present, the design units have retrieved the anticorrosive technology of the new double-layer epoxy plus anticorrosive tape. This technology has abundantly applied the excellent anticorrosion function of low temperature melted epoxy powder, and can be sprayed mechanically, and the cost of the additional anticorrosive tape is comparatively low. Since the formation of this technology, the external winding anticorrosive tape can be used as the external maintenance structure of the coating, which can effectively eliminate the defects of thin thickness of double-layer epoxy powder coating, easy to fall off and collide and make the anticorrosive layer effective.
實踐使用中，防腐膠帶的品種可以選擇聚乙烯防腐膠帶和聚丙烯加強纖維防腐膠帶。聚乙烯防腐膠帶延展性好，柔韌，聚丙烯防腐膠帶的耐磨功能高些，所以目前多選擇傾向是聚丙烯加強纖維防腐膠帶，源于其優(yōu)良的機(jī)械強度。當(dāng)然，這樣工藝綜合防腐功能特別是防腐層強度比用熱纏帶停止防腐要略差的，管子在運輸施工中,容易碰傷和破損，還需求進(jìn)一步改良。
In practice, polyethylene anti-corrosion tape and polypropylene reinforced fiber anti-corrosion tape can be selected as the varieties of anti-corrosion tape. Polyethylene anti-corrosive tape has good ductility, flexibility, and the wear resistance of polypropylene anti-corrosive tape is higher. Therefore, at present, polypropylene reinforced fiber anti-corrosive tape is the most preferred choice, which originates from its excellent mechanical strength. Of course, the comprehensive anticorrosive function of this process, especially the strength of the anticorrosive coating, is slightly worse than stopping anticorrosive with hot wrapping tape. Pipes are easy to be damaged and damaged in transportation and construction, and further improvement is needed.
對我們的防腐鋼管的市場，從微觀的角度停止剖析，防腐鋼管價錢的繼續(xù)下滑，次要是由于很多鋼材的產(chǎn)量過剩，在防腐鋼管的市場中出現(xiàn)出了供大于求的趨向，所以價錢才會出現(xiàn)下降的趨向。往年我們的防腐鋼管的市場依然需求停止盤整，但是往年在短期內(nèi)將防腐鋼管的價錢提升到某一個高度是比擬困難的，如今很多的廠家爲(wèi)了可以加重本人的庫存壓力，鋌而走險的停止賠本銷售，希圖停止資金的周轉(zhuǎn)。估計，隨著我們關(guān)于城鎮(zhèn)建立的繼續(xù)升溫，在將來市場關(guān)于防腐鋼管的需求量會比擬大，那麼希圖將防腐鋼管的市場停止回暖是很有希望的。
For our anticorrosive steel pipe market, from the micro point of view, the price of anticorrosive steel pipe continues to decline. Secondly, due to the excess production of many steel products, there is a trend of oversupply in the anticorrosive steel pipe market, so the price will decline. In the past year, our anticorrosive steel pipe market still needs to stop consolidating, but in the past year, it is difficult to raise the price of anticorrosive steel pipe to a certain height in a short period of time. Nowadays, many manufacturers are desperately trying to stop losing money in order to increase their inventory pressure. Experts estimate that with the continuous warming of our urban construction, the market demand for anticorrosive steel pipes will be comparable in the future, so it is hopeful that the anticorrosive steel pipe market will stop warming up.
The above content is provided by Shandong Hipper Pipe Technology Development Co., Ltd. To learn more about polyurethane insulation pipe manufacturers, you can pay attention to our website: http://www.qndr49.cn Thank you!
