1.Metal tube

(1) Galvanized pipe
(2) Galvanized pipe
(3) Stainless steel pipe

2. Plastic pipe

(1) UPVC pipe
In fact, it is a kind of plastic p朋朋ipe, and the joints are usually gl木書ued together. UPVC pipes have 空我poor frost resistance and來在 heat resistance. Therefore, h明還ot and cold water pip錢為es are rarely used. PVC pipes are s話這uitable for electric wire 南制pipes and sewage pipes黃的. The scientific and techn麗好ological circles have discovered tha暗機t the chemical additive phthalate,票來 which can make PVC softer,輛老 has a great impact on the kidn物為eys, liver, and testes 妹煙in the human body an通讀d can cause cancer. , Kidney 妹時damage, damage to the human body's func得頻tional reconstruction system, and a身不ffect development (only cold藍風 water is not good for hot wa些志ter, and it is easy to be bri年快ttle in winter).

(2) PPR tube
As a new type of wate厭黃r pipe material, it can be used as a 見我cold pipe or a hot water pipe服訊. Because of its non-toxicity, light we的月ight, pressure resistance, a中兒nd corrosion resista少東nce, it is becoming a 問船popular material. It 舊筆is also suitable for hot water pipes an哥月d even pure drinking現間 water pipes. The int路姐erface of the PPR pipe adopts工樹 hot-melt technology, and the pipes 男體are completely fused together, s兵暗o once the installation 做美and pressure test pass, there 身錢will be no longer aging and做用 water leakage like aluminum-pla拿一stic pipes, and the PPR pipe will not做們 scale. The main defects of PPR wa錯低ter pipes are: high tem錢冷perature resistance, poor pre刀水ssure resistance, long-term 船文working temperature can not e現到xceed 70 ℃; large linear expans年聽ion coefficient, the pipe is easy to d讀舊eform after hot water, which拍人 affects the appearance; each len計現gth of straight pipe is 4 meter農知s / Root, the coil is 100 mete舊工rs---300 meters. And can not be cons員離tructed at a small angle. If南嗎 the pipeline is laid for a 黑有long distance or there a在拍re many corners (small 電個angles), a large number 制制of joints will be used in the constru村訊ction; the pipes are cheap but the pr鐵年ice of the accessories is rel拿喝atively high.

(3) PB tube
Polybutene (PB) resin was fi通錯rst synthesized by Italia呢家n professor G. Natta i司要n 1954, and industrial production began好妹 in 1964. In 1965, the美舞 first polybutene (PB) heat草腦ing piping system appeared in the Au錢書strian Plastics Association,自件 which is exciting. The thing is, 科城the system is still running today. I影廠n the following 50 years, the applicati哥紙on of polybutene (PB) piping system 件從has been continuously p訊黃romoted, and it is appl匠但ied to the radiator heating connectio照有n piping system in the buil紙是ding, the ground rad月明iant heating system 船吃and the domestic cold and hot w子微ater piping system. Poly離東butene (PB) resin is a high-molecu說小lar polymer composed of吧草 carbon and hydrogen. Compare他電d with traditional materia線服ls such as metals and ceramics, it 開購is easy to process, easy to 慢廠recycle, and has low energy con說裡sumption throughout its life cy還鐘cle. It is a green and envir筆東onmentally friendly en習近vironment. Friendly materials. Fr答冷om the structural point of view, pol拍書ybutene (PB) is a linear isotactic火站 semi-crystalline ther村河moplastic material, which is 黑弟non-toxic and pollution-free durin物她g processing and use, a一南nd can be repeatedly heate機為d for molding. Therefore,厭亮 polybutene (PB) combin好自es the advantages of 時月hygiene, processability,街她 surface finish, strengt車信h, flexibility and connectiv喝短ity, and achieves a comprehensive bal去森ance in physical properties, thermod有資ynamic properties, and 喝和functionality, thus giving poly場遠 Butene (PB) plastic pi視習pes have many unique chara林討cteristics, which can open up a wid美唱e range of applicatio紙輛ns in the field of fluid transpor微站tation systems, especially in t南跳he field of hot water 黑山transportation systems in buildi錢玩ngs.

(4) PE-RT tube
PE-RT stands for hea嗎自t-resistant polyethy土媽lene. It is the abbreviation愛這 of Polyethylene of raised在到 temperature resistance. It低金 is a kind of non-crossl到放inked polyethylene that can讀新 be used for hot water pipes. Some p場樂eople also highlight its 拍錢non-crosslinking charact火們eristics and call it " High temperatur廠年e resistant non-crossl問舞inked polyethylene". It is a m車個edium-density polyethylene pro也街duced by a special molec關那ular design and synthesis proce但問ss. It adopts a copol新好ymerization method of ethylene a刀子nd octene, and obtains a 相樂unique molecular structure b喝兒y controlling the numb笑她er and distribution of side ch上銀ains to improve the resistan聽開ce of PE. Thermal. Due to th會廠e existence of short店會 octene chains, the macromolec舊新ules of PE can not be見綠 crystallized in a flak醫秒y crystal, but penetrated through s算這everal crystals, forming a c對知onnection between the crystals, i員校t retains the good flexibility of PE, h山場igh Thermal conductivity an件少d inertness, while making i煙看t more pressure resistant, this 家南modification method is similar to t離中he common PPR on the marke好麗t. PE-RT pipes can be used f水站or all use levels of hot 吃照water pipes specified in ISO10508.

(5) PPH
The high-density poly長吧propylene pipes used in drai裡海n (sewage) water pipes, waste wa還站ter pipes, rainwater pipes, a喝雪nd exhaust pipes should comply with the高紅 regulations of DIN53457 (ISO/窗路R1133, ISO/R179, RAL), and th資報e installation method should use e子音lectric welded sleeve腦我s and butt joints as far as possibl音技e Method construction.

(6) PP-B
Because of the use of fusion te刀他chnology in construction. 行行Therefore, it is also從地 commonly known as h木麗ot melt tube. It is non-toxic, 冷老light weight, pressure resistant來亮 and corrosion resistant, a少快nd is becoming a popular material, 哥術but it is still less東時 used in decoration p明短rojects. Generally speaking, thi山作s material is not only suitable for c來站old water pipes, but also for區書 hot water pipes and even pure drin拿慢king water pipes.

(7) PEX tube
Cross-linked polyethylen農路e pipe (PEX) Generally speakin道舊g, this material is the麗數rmally welded. The ad鐵風vantages of pex pipe: 筆為good pressure resistance, 分草nominal pressure 1.25MPa, de紙日16mm burst pressure gr輛紅eater than 6MPa, de20mm burst pressure 門銀greater than 5MPa; wide下老 temperature resistance range ：-70——9站科5℃ (short-time 110℃); resistant to ac有了id and alkali corrosion, c東小an be used for the transportation of 家長a variety of chemical窗麗 substances; high temperature resis兵們tance, excellent low te鐘唱mperature performance; smooth 影又inner and outer walls of the p議但ipe, low resistance, no scaling; cle門師an, no pollution, It can save 白書people the pain of citing "yellow 校現water" and "rusty water問店"; 　The use of special pipe fitti做場ngs can be easily and quickly insta綠師lled without tapping, buck志劇ling, and welding; it i謝輛s easy to bend and flexible, whi子些ch saves pipe fittings; light we書廠ight, Compared with the same p水報eriod, the pipe length is only 1/南樹10 of that of galvanized steel pipe;事會 it has good thermal insulation pe數黑rformance; it has a long se空化rvice life, at 70℃, working press男鐘ure ≤0.8MPa, and the continuous service工理 life is 50 years. The defect is t些月hat the connection cannot件術 be hot-melted, which limits its sco答兵pe of application in HV遠懂AC and water supply.

3. Composite pipe

(1) Aluminum-plastic composite pipe
It is the first water supply pipe to 爸秒replace cast iron pipe. Its basi窗些c structure should be five layers看化, namely plastic, hot melt adhesive, 分裡aluminum alloy, hot melt adhesive, p唱妹lastic, etc. from the i金亮nside to the outside.
The aluminum-plastic composite pipe業道 has good thermal insulation房愛 performance, the in朋黑ner and outer walls are not eas我的y to corrode, because城歌 the inner wall is smooth, the resi木秒stance to fluid is small; a懂身nd because it can be 理什bent at will, the installat東光ion and construction are convenient. As不頻 a water supply pipeline, the aluminum-頻跳plastic composite pipe has sufficient得歌 strength, but if the lateral force is 冷機too large, the strength will be 大喝affected. Therefore, it should be cons著你tructed as an open p花就ipe or buried in the 信資wall, but it is not suitable to 玩畫be buried in the gro紅裡und. The connection of the alu鐘兵minum-plastic composite 著腦pipe is of the ferrule ty裡風pe, so the first step in the co現著nstruction is to pass a strict pressure工從 test to check whether the connectio光唱n is firm. The second is to prev銀秒ent frequent vibration and loosen the 市業ferrule. The third is 答個to leave enough installation是行 amount in the length direction弟雪 to avoid pulling off.

(2) Steel-plastic composite p路紅ipe
Steel-plastic composite pipe, the pro微近duct uses seamless steel pipe匠器 and welded steel pipe as the冷這 base pipe, and the inner w又房all is coated with high-adhesi國師on, anti-corrosion, food-grade s這快anitary polyethylene powder coati房又ng or epoxy resin coat會的ing. The water-supply ga就做lvanized and plastic-coate道歌d composite steel pipe mad什又e of pre-treatment, pre-hea員生ting, internal coating, level制我ing, and post-treatment processes is a近路n upgraded product of the traditional上算 galvanized pipe. The product 間放implements the CJT120-2000 ind亮煙ustry standard of the Ministry of Con低但struction. Caliber range 化麗DN15--DN1200 can be painted with fl問鐘anges and pressure grooves. 煙機Length 6m, 9m, 12m and in雨很definite length. Coating wall thic銀見kness is between 100 microns and 500 mi音子crons, usually 350 microns.好新 Pipeline connection threaded c跳算onnection, flange connection, c話不lamp connection pre-tre短數atment Chemical dip tank method,錢拿 physical sandblasting 雨少method Coating varieties Thermoplast畫個ic polyethylene powder (那南PE), thermosetting epoxy powder (EP) 離鐵and other powder coatings Produ風路ct characteristics

1． Hygienic, non-toxic, no fou器一ling, no microorganisms, and g議湖uarantee of fluid quality.
2.  Resistant to chemical co文校rrosion, soil and marine organ章我ism corrosion, and cathodi市近c disbondment resistance
3． The installation proc門資ess is mature, convenient些熱 and fast, and the conne也問ction is similar to ordinary galv機花anized pipes.
4． Good weather resistance, suitable fo刀人r harsh environments數到 such as deserts and saline a村師lkalis.
5． The pipe wall is smooth,兵林 the conveying efficiency is i務要mproved, and the service學木 life is long.

(3) Outer layer welding type
The outer layer welding ty通妹pe aluminum-plastic composite pipe in說子cludes an outer layer of random copoly師的mer polypropylene co志黃-extruded plastic layer,鄉金 and a hot-melt adhesive layer is現吧 connected to the inner surfa厭海ce of the random copolymer polypropyl紙匠ene co-extruded plastic la舊但yer. The inner surface of the mixture l愛做ayer is connected with an alum些個inum tube layer, the inner s靜看urface of the aluminum tube layer is 訊作connected with a hot melt adhesive la樂林yer, and the inner surface of拍睡 the hot melt adhesive la睡他yer is connected with a polyeth南鐘ylene co-extruded plast制工ic layer; the utility model It has ex腦務cellent high temperature resistance a路技nd small thermal defor大生mation characteristics of aluminum-pl木懂astic composite pipes, and the reliabi放麗lity of hot melt con公這nection with PP-R pipes. It can be wide老亮ly used in cold and hot身老 water pipes and drinking 著算water systems, heating pipes, f人民loors, walls, and heating. Systems, sol術厭ar heating, cooling 媽煙systems, industrial fluid c子空onveying systems, central 國計air-conditioning system可唱s, compressed air pipeline sy書木stems and other fields.

(4) Bimetal composite type
Lined with stainless steel composi筆鄉te pipe, the product is base下見d on galvanized steel 靜妹pipe and lined with thin-wall師們ed stainless steel, which can東但 not only meet the adva話村ntages of stainless steel日近 safety, sanitation, health and dur朋近ability, but also eliminate the prob的自lem of plastic pipe pollution, and 金弟the price is also higher than that費懂 of copper pipes. And the stainless 高做steel pipe saves a lot話個, and can be installed and constructe著喝d safely, conveniently and re影不liably, and has a high p些睡ressure-bearing capacity. It is a 個光new type of environmentally 習數friendly, green and energy-saving prod草妹uct.