brass compression pipe fittings for copper tube

1 Hard polyvinyl chloride（PVC-U）Tube

PVC-UPipe is based on sanitary-grade chloride(PVC)Resin is the main raw material，Add appropriate amount of stabilizers、Lubricant、Filler、Plastic extruder extrusion molding and injection molding machine injection molding，Cooling、Solidify、Stereotype、test、Packing and other processes to complete pipe、Pipe production。

PVC-UPipeline advantages：Light weight、preservative、Small water flow resistance、Energy saving、Install fast、Low cost。

Application range：Urban tap water water water supply project、Building internal and external water supply project、Mining enterprise water supply project、Buried fire water supply project、Farmland water conservancy water irrigation project、Garden horticultural green water supply project、Aquaculture water supply drainage project, etc.。

2Randomable copolypropylene（PP-R）Water pipe

PP-RTube is also called three-type polypropylene tube，Using random copolymer polypropylene extruded into pipe，Injection into a pipe。Europe90New plastic pipe products for development applications in the age。PP-RYes80At the end of the year，Phase a gas phase copolymerization process5%aboutPEexistPPParticularly polymerized in the molecular chain（Random）And become a new generation of pipeline materials。It has better impact resistance and long-term creep performance。

PPRAdvantage：fair price、Performance stability，Heat heat preservation，preservative，Inner wall smooth、Pipeline system is safe and reliable，Not penetrate，Used years can be reached50year。Never descason、Never rust、Never leak、Green advanced water water。

PPRDisadvantage：High construction technology requirements，Construction required for special tools and professionals，Can ensure system security。

PPRPipe application field：

1、Cooling water system for buildings，Including a centralized heating system；

2、Heating system in buildings、Floor、Wall panel and radiant heating system；

(brass compression pipe fittings for copper tube)3、Pure water water supply system for direct drinking；

4、central(concentrated)Air Conditioning System；

(brass compression pipe fittings for copper tube)5、Industrial pipe system such as transportation or discharge chemical media。

3Aluminum-plastic composite pipe

(brass compression pipe fittings for copper tube)Aluminum-plastic composite tube is the earliest replacement of water pipe，The basic composition should be five layers，That is, it is plastic from the outside.、Hot melt glue、Aluminum alloy、Hot melt glue、plastic。

(brass compression pipe fittings for copper tube)Aluminum-plastic composite tube has good insulation performance，Inner and outer walls are not easy to corrode，Inner wall smooth，Small fluid resistance；Also bend freely，So the installation is convenient。

(brass compression pipe fittings for copper tube)There are three main aluminum-plastic water pipes in the market.：

1、PE／AL／PE

（Polyethylene/Aluminum/Polyethylene）；

2、PE／AL／PEX

（Polyethylene/Aluminum/Crosslinked Polyethylene）；

3、PEX／AL／PEX

（Crosslinked
Polyethylene/Aluminum/Crosslinked Polyethylene）。

The first is that the inner and outer layer is polyethylene，The second is the inner layer as crosslinked polyethylene，Outer is polyethylene，The third is crosslinked polyethylene in the inner and outer layers.，The middle layer is aluminum layer。First types generally used for cold water pipeline systems，The latter two are generally used in hot water pipes。

4Copper tube

Copper tube also known as。Non-ferrous metal tube，Is suppressed and drawn seamless tubes。

(brass compression pipe fittings for copper tube)advantage：Copper tube hard，Be uncomfortable，High temperature resistance、High pressure，Is the best water supply pipe。

shortcoming：High price。

5Thin wall stainless steel pipe

(brass compression pipe fittings for copper tube)(brass compression pipe fittings for copper tube)

Wall thickness0.6~2.0mmStainless steel strip or stainless steel plate，Tubular made from welding welding techniques such as automatic argon arc welding。

Domestic thin-walled stainless steel pipe is20century90New pipes from the end of the age，Because of its safety and hygiene、high strength、Good corrosion resistance、strong and sturdy、long life、Maintenance-free、Beautiful and other features，At present, the development of stainless steel water pipe is strong.，A large amount of construction water and direct drinking pipelines。

Thin wall stainless steel pipe（Light gauge stainless pipes）Have the following outstanding advantages：Excellent mechanical properties、Superwear resistance、Safe hygiene performance is good、Good temperature resistance、Good thermal insulation performance、Inner wall smooth water resistance；Appearance、clean、Fashion，100%Reclaimed reuse；Concern saving water resources；Wide range of use；Long-use life-long integrated cost。

6Hot dip galvanized steel pipe

Galvanized steel pipe is divided into cold galvanized tube、Hot galvanized tube，The former has been disabled。The hot-dip galvanized tube is to react the molten metal to the ferromic body to produce alloy layers.，Thereby combining the substrate and the coating。Hot-dip galvanizing is to wash the steel pipe first，In order to remove iron oxide on the surface of the steel pipe，After washing，Cleaning by ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank，Then send the hot dip coating tank。Hot-dip galvanizing has a uniform coating，Strong，Advantages such as long service life。Physically galvanized steel pipe matrix and the molten plating solution、chemical reaction，Formation of corrosion-resistant structural tight zinc-iron alloy layer。Alloy layer and pure zinc layers、Steel pipe matrix integration。Therefore, its corrosion resistance is strong。

Diston welded pipe and spiral welded pipe。Can be used in fire water supply networks。High strength，Advantages of strong anti-strain ability，But its corrosion resistance is poor，Anti-corrosion treatment。Tongzi-diameter steel pipe has different thicknesses，So when choosing, you should indicate the wall thickness.。

Direct seam welded pipe：Simple production process，high productivity，low cost，Develop faster。

Spiral welded pipe：The intensity is generally higher than the straight seam welded tube，Welding tube with a narrow billet，It is also possible to produce non-different welders with the same width.。But compared to the seamless seam tube of the same length，Weld length increases30~100%，And the production speed is low。therefore，The solder tube of smaller diameter is mostly seamless welding.，Large diameter welded tubes are mostly spiral welding。

8Chloride polyvinyl chloride（PVC-C）Water pipe

PVC-CResin is a masterbatch，Add a resistant agent，Surveillances such as stabilizers are extruded by high speed。

Characteristics：

1、Firm：due toPVC-CMorePP-R、PBandPEXFirm，Therefore, only less hooks and brackets。PVC－CHigh pressure resistance，At the same flow，andPP-R、PBandPEXTube comparison，PVC-CSmaller pipe diameter can be used。

2、Convenient installation：Connect using a dedicated fusionant，No special tools for installation，Applicable to install，Also suitable for darkness。

3、preservative：PVC-CNot easy to oxygen，Therefore, metal parts in the system do not cause corrosion due to oxidation.。

4、Good flame retardancy：PVC-CThe oxygen index is60，Burning is very low，Extinguish the fire，Will not produce fire droplets，More suppressing smoke and toxic gases。

5、Not affected by residual chloride：Unlike polyolefin pipes，PVC-CAfter long-term use，Influence of water survival，Cracks and cracks will not occur。

6、Acid-resistant：PVC-CRegardless of acid or alkali, strong anti-corrosion，Can be used as deliveryHCLandNaOHliquid。

7、Bacteria is not easy to breed：After many tests confirmed，PVC-CTube bacteria is not easy，Its bacterial growth rate isPEXTube1/60，Copper tube1/10，Steel pipe1/4。Its water samples have the amount of bacteria test volumePEXTube1/13，PP-RTube1/17。

8、Low thermal expansion coefficient and aging resistance：Relative to other plastic tubes，PVC-CThe coefficient of thermal expansion of the tube is small，ApproximatelyPP-R、PBandPEXOther plastic tubes1/2。PVC-CTube has strong UV-UV capacity，Can be used outdoors，The general polyolefin tube cannot be。

9、Superior hygiene：PVC-CHot and cold water pipes are tested by many international water quality health authorities，It is superior to the World Health Organization and the Ministry of Health and other institutions such as the Ministry of Health of the People's Republic of China on the standards of drinking water。

9Polyethylene（PE）Tube

PEHeavy metal salt stabilizer does not add when machining，Material non-toxicity，Non-targeted layer，Do not brevy bacteria，Very good solution to secondary pollution of urban drinking water。Except for a few strong oxidant，Multiple chemical media erosion；Electrochemical corrosion。In the rated temperature、Under pressure，PEPipes can be used safely50Year-old。PETube toughness，High impact strength，Heavy objects are directly pressed，Will not cause the pipeline rupture。PEThe strength of the hot melt or the electric fused interface is higher than the pipe body.，The seam does not disconnect due to soil movement or live load。Pipeline，Welding process is simple，Convenient construction，Engineering comprehensive cost。

10Acrylonitrile-Butadiene-Styrene（ABS）Engineering plastic water pipe