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Plastic piping system

  • Categories:Technology support
  • Time of issue:2019-08-23 00:00:00
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  • Description:
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    Ⅰ 、UPVC/CPVC Piping System

     

    1、Material Characteristic

    Polyvinyl chloride is polymerized of monomer vinyl chloride (VCM). It is used for construction, sewerage pipes and other pipe applications because of its biological and chemical resistance and workability. It’s more effective than traditional materials such as copper, iron or wood in pipe and profile applications.

    CPVC is PVC (polyvinyl chloride) that has been chlorinated. Depending on the method, a varying amount of chlorine is introduced into the polymer allowing for a measured way to fine tune the final properties. The chlorine content may vary from manufacturer to manufacturer; the base can be as low as PVC 56.7% to as high as 74% by mass, although most commercial resins have chlorine content from 63% to 69%.CPVC can withstand corrosive water at temperatures greater than PVC, typically 40°C to 50°C (104°F to 122°F) or higher, contributing to its popularity as a material for water piping systems in residential as well as commercial construction.

     

    2、Introduction to UPVC/CPVC Piping System

    UPVC/CPVC pipes are in widespread use in a number of industries, ranging from residential plumbing to complex water treatment systems. Because of the material properties of UPVC/CPVC pipes, they are highly valuable as a thermo-resistant structure, fire retardant fabric, and as a high quality water conduit in many construction applications. UPVC/CPVC pipes are superior to most other modern materials due to environmental friendliness, chemical resistance, inherent toughness, heat resistance, and being electrically non-conductive/non-corrosive.

    Max working temperature of UPVC pipes is 60℃, and they are usually used below 45℃. They are applied for water supply system, agriculture irrigation system, and pipes for air conditioning.

    Max working temperature of CPVC pipes is 110℃, and they are usually used below 95℃.They are applied for petro, electronics, chemical engineering, food, and metal plating industries.

     

    3、Physical Properties

    Physical Properties for UPVC

    Item

    Unit

    Standard Value

    Standard

    Density

    kg/m³

    1350~1460

    ISO 1183

    Vicat

    (PIPE)≥80,(FITTING)≥74

    ISO 2507

    Tensile Strength

    MPa

    ≥40

    ISO 6259

    Impact Strength

    KJ/㎡

    11.0

    ISO 179

    Vertical Retraction Ratio

    %

    ≤5

    ISO 2505

    Drop-weight Test(0 ℃)

    TIR

    ≤10%

    ISO 3127

     

    Physical Properties for CPVC

    Item

    Unit

    Standard Value

    Standard

    Density

    kg/m³

    1450~1650

    ISO 1183

    Vicat

    (PIPE)≥110,(FITTING)≥103

    ISO 2507

    Tensile Strength

    MPa

    ≥50

    ISO 6259

    Impact Strength

    KJ/㎡

    8.0

    ISO 179

    Vertical Retraction Ratio

    %

    ≤5

    ISO 2505

    Drop-weight Test(0 ℃)

    TIR

    ≤10%

    ISO 3127

     

    4、Temp & Pressure relation between UPVC and CPVC pipelines

    The operating pressure in the UPVC and CPVC pipelines at higher temperatures is listed in the following table, with the pressure at the at normal operating temperature 73℉(23℃) scaled to be 100%.

     

    73

    80

    90

    100

    110

    120

    130

    140

    150

    160

    170

    180

    190

    200

    210

    23

    27

    32

    38

    43

    49

    54

    60

    66

    71

    77

    82

    88

    93

    99

    UPVC(%)

    100

    90

    75

    62

    50

    40

    30

    22

    0

    0

    0

    0

    0

    0

    0

    CPVC(%)

    100

    100

    91

    82

    73

    65

    57

    50

    45

    40

    32

    25

    22

    20

    0

    Note: UPVC pipes with screws should not be operated over 110 ℉(43℃); CPVC ones should not be operated over 150℉(66℃).

     

    UPVC/CPVC use temperature and operating pressure change table

    KEHENG

     

    Ⅱ、PPR/PPH Piping System

     

    1、Material Characteristics

    Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications including packaging and labeling, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes. There are three general types of polypropylene: homopolymer, random copolymer, and block copolymer. The comonomer is typically used with ethylene. Polypropylene Random Copolymer (PP-R) is formulated by adding randomly polymerized ethylene monomer to polypropylene homopolymer. It decreases the polymer crystallinity and makes the polymer more transparent.

    Polypropylene Homopolymer (PP-H) is another type of PP. It has better temperature & creep resistance than PPR, and with low temperature impact strength.

     

    2、Introduction to PPR/PPH Piping System

    Presently PPH/PPR pipes & fittings are most reliable in plumbing and water supply plants, due to their chemical features and fusion welding, which ensures the plumbing to have a perfect seal tight system. Approved by the Health Organization with characteristics such as Eco-friendly and high temperature resistance, PPH/PPR pipes & fittings have been taken as one of the best solution for piping systems.

    Max working temperature of PPR pipes is 95℃, and they are usually used below 70℃.They are appied for transferring corrosive material below 70℃, and also for pressured liquid transfer, for example, household water system.

    Max temperature of PPH pipes is 110℃, and they are usually used below 90℃.They are applied for cooling water transfer, corrosive material transfer, fume ducts, electrolyze systems, and other piping systems with acid liquids.

     

    3、Physical Properties

    Physical Properties of PPR Pipes

    Item

    Unit

    Standard Value

    Standard

    Density

    kg/m³

    900~920

    ISO 1183

    Vicat

    ≥91

    ISO 2507

    Tensile Strength

    MPa

    ≥25

    ISO 6259

    Impact Strength(23℃)

    KJ/㎡

    40

    ISO 179

    Vertical Retraction Ratio (135 ℃)

    %

    ≤2

    ISO 2505

     

    Physical Properties of PPH Pipes

    Item

    Unit

    Standard Value

    Standard

    Density

    kg/m³

    905~915

    ISO 1183

    Vicat

    ≥95

    ISO 2507

    Tensile Strength

    MPa

    ≥27

    ISO 6259

    Impact Strength(23℃)

    KJ/㎡

    50

    ISO 179

    Vertical Retraction Ratio (150 ℃)

    %

    ≤2

    ISO 2505

     

    4、Temp & Pressure relation between PPR and PPH pipelines

     

    50

    68

    77

    86

    104

    122

    140

    158

    176

    194

    203

    212

    230

    10

    20

    25

    30

    40

    50

    60

    70

    80

    90

    95

    100

    110

    UPVC(%)

    100

    100

    100

    85

    70

    55

    40

    27

    15

    8

    0

    0

    0

    CPVC(%)

    100

    100

    100

    92

    76

    65

    56

    44

    35.5

    31.5

    27

    18

    0

     

    PPR/PPH use temperature and operating pressure change table

    KEHENG

     

    Ⅲ、PVDF Piping System

     

    1、Material Characteristics

    Max working temperature of PVDF pipes is 200℃, and they can be used for a long time in the temperature range of -50℃ ~ 150℃. Except hydrochloric acid and strong solvent, PVDF can withstand all salt, acid, alkali, aromatic hydrocarbon, halogen and other media. And with its excellent corrosion resistance, long service life and high safety performance, PVDF products widely used in severe environment which high temperature, high pressure, low temperature, high vacuum and heavy corrosion. PVDF products is one of the best choice of the current industrial pipeline system.

     

    2、Introduction to PVDF Piping System

    Max working temperature of PVDF pipes is 200℃, and they can be used for a long time in the temperature range of -50℃ ~ 150℃. Except hydrochloric acid and strong solvent, PVDF can withstand all salt, acid, alkali, aromatic hydrocarbon, halogen and other media. And with its excellent corrosion resistance, long service life and high safety performance, PVDF products widely used in severe environment which high temperature, high pressure, low temperature, high vacuum and heavy corrosion. PVDF products is one of the best choice of the current industrial pipeline system.

     

    3、Physical Properties

    Physical Properties of PVDF Pipes

    Item

    Unit

    Standard Value

    Standard

    Density

    kg/m³

    1770~1790

    ISO 1183

    Vicat

    ≥165

    ISO 2507

    Tensile Strength

    MPa

    ≥40

    ISO 6259

    Impact Strength(23℃)

    KJ/㎡

    ≥160

    ISO 179

    Vertical Retraction Ratio (150 ℃)

    %

    ≤2

    ISO 2505

     

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    The company specializes in the production of corrosion resistant, acid and alkali resistant, high temperature resistant UPVC, CPVC, PPH and PVDF’s

    true union ball valves, foot valves, check valves, butterfly valves, Y sediment strainer, fittings and pipes, and PPR piping system. The products conform to ANSI, JIS, DIN and CNS standard. We has a R&D team with rich technical force and development ability. And design, research and develop, manufacture mold and products by our self independently. The product’s specification are various and completed. 

    Add:NO.1303,Tonghui South  Rd.,TongAn District,Xiamen City,China

    Business:86-592-6363176 6363177

    E-mail:kh@xmkhsj.com