欧美极品jizzhd欧美,91精品久久一区二区三区,欧美乱妇无乱码大黄a片,欧美日韩国产一区在线看

滄州新聞資訊，楊記者近日獲悉：Plastic coated composite steel pipe is also called plastic coated steel pipe. Plastic coated steel pipe is a steel-plastic composite product with steel pipe as base pipe and plastic powder as coating material. It is melted and coated with a layer of plastic on its inner surface and coated with plastic layer or other material anti-corrosion layer on its outer surface.
This product is a new type of pipeline material developed in China. It adopts a composite structure of reinforced welded steel pipe or seamless compression steel pipe. It overcomes the defects of easy rust, corrosion, high pollution, low strength and easy deformation of plastic pipe, and integrates steel pipe and plastic products. The common advantages are the environmentally friendly products popularized by the state. Plastic-coated composite steel pipe is a steel-plastic composite pipe made up of 0.5-1.0 mm thick polyethylene (PE) resin, ethylene-acrylic acid copolymer (EAA), epoxy (EP) powder, non-toxic polypropylene (PP) or non-toxic polyvinyl chloride (PVC) and other organic substances. It not only has high strength of steel pipe. It also overcomes the shortcomings of easy corrosion, pollution, scaling, low strength of plastic pipe, poor fire fighting performance and so on. The design life can reach 50 years. The main disadvantage is that no bending, hot working and welding cutting operations should be carried out during installation, and the cutting surface should be coated with non-toxic room temperature curing adhesives provided by the manufacturer. The main specifications are DN15 - DN300.

涂塑復(fù)合鋼管也叫涂塑鋼管，涂塑鋼管是以鋼管為基管，以塑料粉末為涂層材料，在其內(nèi)表面熔融涂敷上一層塑料層，在其外表面涂敷上塑料層或其他材料防腐層的鋼塑復(fù)合產(chǎn)品。

本產(chǎn)品是國內(nèi)新發(fā)展的一種新型管道材料，采用內(nèi)外均有涂塑保護(hù)層，中間為增強(qiáng)焊接鋼管或無縫承壓鋼管的復(fù)合結(jié)構(gòu)，克服了鋼管本身存在的易生銹、腐蝕、高污染、及塑料管強(qiáng)度低、易變形的缺陷，整合了鋼管和塑料產(chǎn)品的共同優(yōu)點，屬于國家推廣使用的環(huán)保產(chǎn)品。涂塑復(fù)合鋼管是在鋼管內(nèi)壁融溶一層厚度為 0.5 ～ 1.0mm 的聚乙烯（PE ）樹脂、乙烯－丙烯酸共聚物（EAA）、環(huán)氧（EP）粉末、無毒聚丙烯（ PP ）或無毒聚氯乙烯（PVC）等有機(jī)物而構(gòu)成的鋼塑復(fù)合型管材，它不但具有鋼管的高強(qiáng)度、易連接、耐水流沖擊等優(yōu)點，還克服了鋼管遇水易腐蝕、污染、結(jié)垢及塑料管強(qiáng)度不高、消防性能差等缺點，設(shè)計壽命可達(dá)50 年。主要缺點是安裝時不得進(jìn)行彎曲，熱加工和電焊切割等作業(yè)時，切割面應(yīng)用生產(chǎn)廠家配有的無毒常溫固化膠涂刷。主要規(guī)格有DN15 —DN300 。

涂塑復(fù)合鋼管主要型號分為： GS-—X-SP-T-EP、GS-—SP-T-EP、GS-—D-SP-T-EP(PE)、HY1-GEP-DN100、HY1-XEP-DN150