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影响管材价格的因素都有哪些?

作者: admin    来源:http://www.laobingguandao.com  时间:2019-09-17    人气:
  PSP钢铁和塑料复合管道广泛应用由于其强度高、耐腐蚀、寿命长、宽温度范围等特点,因此市场需求可以说是相当大,所以PSP管制造商越来越多,导致这个产品的市场价格没有波动。经过市场调查,影响价格的主要因素如下。
  Because of its high strength, corrosion resistance, long service life and wide temperature range, PSP steel and plastic composite pipes are widely used, so the market demand can be said to be quite large, so more and more PSP pipe manufacturers, resulting in no fluctuation in the market price of this product. After market research, the main factors affecting prices are as follows.
  1. 基材选择
  1. Substrate selection
  钢管的材质选择是钢管和塑料管质量的基础。如果没有要求,这将对客户产生巨大的影响,使他们不得不以更低的价格出售。
  Material selection of steel pipes is the basis of quality of steel pipes and plastic pipes. If there is no requirement, it will have a huge impact on customers, so that they have to sell at a lower price.
  2. 粘接强度及塑料层附着力
  2. Bonding Strength and Adhesion of Plastic Layer
  塑衬冷水复合管粘结强度不小于1MPa,热水复合管粘结强度不小于1.5mpa;聚乙烯涂层对覆膜复合管表面的附着力≥30N/cm,环氧树脂涂层的附着力为1 ~ 3级。为了节约成本,单个厂家会选择劣质的打砂设备和有缺陷的钢砂,使基材管不能达到Sa2.5的加工要求,还会选择低成本的粉末颗粒和热熔胶。这将导致粘接强度和粘接质量不合格,塑料层容易从销售价格上脱落。
  The adhesive strength of plastic-lined cold-water composite pipe is not less than 1 MPa and hot-water composite pipe is not less than 1.5 mpa. The adhesion of polyethylene coating to the surface of coated composite pipe is more than 30N/cm, and that of epoxy resin coating is between 1 and 3 grades. In order to save costs, a single manufacturer will choose inferior sanding equipment and defective steel sand, so that the base material pipe can not meet the processing requirements of Sa2.5, but also choose low-cost powder particles and hot melt glue. This will lead to unqualified bonding strength and quality, and the plastic layer is easy to fall off from the sales price.
  3.曲折和压扁功能
  3. Bending and flattening functions
  对公称直径不超过50mm的钢管和塑料管进行扭矩试验,对公称直径不超过50mm和600mm的钢管进行压缩。经弯曲矫直后,塑性层不开裂,钢与塑性层之间的层合格。部分厂家生产的管材在压扁变形后出现弯曲程度或塑层开裂或分层现象,导致客户流失,导致PSP钢塑复合管销售。
HDPE通用增强网状结构壁管
  Torque tests were carried out on steel pipes and plastic pipes with nominal diameters less than 50 mm, and steel pipes with nominal diameters less than 50 mm and 600 mm were compressed. After bending and straightening, the plastic layer does not crack and the layer between steel and plastic layer is qualified. The bending degree or plastic layer cracking or delamination of pipe produced by some factories after flattening deformation leads to customer loss, which leads to the sale of PSP steel-plastic composite pipe.
  4. 健康功能需求
  4. Health Functional Requirements
  清洁功能需要食品级材料的制造商使用单个的错,和塑料层不符合GB / T 17219的卫生要求,并没有经过卫生检验检疫局,和项目的价格进入客户的饮用水会降低。
  Cleaning functions require that manufacturers of food-grade materials use individual errors, that plastic layers do not meet the hygienic requirements of GB/T 17219, that they do not pass through the Health Inspection and Quarantine Bureau, and that the price of the items entering the customer's drinking water will be reduced.
  5. 测试方法的质量控制
  5. Quality control of test methods
  每批PSP钢塑复合管产品出厂前都要经过严格的试验方法检测。除进行附着试验和弯曲矫直试验外,还应进行涂覆塑料层电火花试验和热水管道冷热循环试验。很多工厂都没有完成基本的检测设备,生产的质量也没有保证以低廉的价格销售。
  Each batch of PSP steel-plastic composite pipe products must be tested by strict test methods before they leave the factory. In addition to adhesion test and bending straightening test, spark test with plastic coating and hot water pipe cold and hot cycle test should also be carried out. Many factories have not completed the basic testing equipment, and the quality of production is not guaranteed to sell at a low price.
  6. 耐火性
  6. fire resistance
  消防用PSP钢塑复合管应进行高温试验,并保持(300±5)℃恒温1h。试验后,镀层应无脱落、起拱、开裂、剥落、损坏等现象。其选用的材料为纯聚酯材料,包括阻燃剂,而一些厂家为了节约成本选用不含阻燃剂的材料,不能具有阻燃效果但价格低廉。
  The PSP steel-plastic composite pipes for fire protection should be tested at high temperature and kept at (300 +5) C for 1 hour. After the test, the coating should not fall off, arch, crack, peel off, damage and other phenomena. The selected materials are pure polyester materials, including flame retardants. In order to save costs, some manufacturers choose materials without flame retardants, which can not have flame retardant effect, but the price is low.
  如果您想了解更多关于HDPE通用增强网状结构壁管的信息,可以关注我们的网站:http://www.laobingguandao.com,也可以直接联系我们,我们将为您提供最贴心的服务。
  If you want to know more about the general enhanced network management structure of HDPE, you can pay attention to our website: http://www.laobingguandao.com, or contact us directly. We will provide you with the most intimate service.

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