DURY CHEMICAL

PRODUCT

Chlorinated polyvinyl chloride pipes

Main application
of DPF

Firefighting
pipes
Supplying pipes
Industrial
plumbing
Sea water
pipes
Ship pipes
High pressure
pipes

DPF
feature

PRODUCT FEATURE

It is a product that can be used semi-permanently to improve problems such as corrosion and scale of conventional steel pipes and copper pipes, and has excellent self-extinguishing properties and heat resistance. Construction is also easy with the bond joining method.

Excellent flame
retardancy
Highly flame retardant, does not burn itself and prevents flame spread
Excellent shock
resistance
It has strong pressure resistance and is suitable for firefighting piping.
Excellent heat
resistance
High heat resistance, can be used even at high temperatures
convenient
construction
Lighter in weight than steel pipe, easy to install

A superiority
of DPF

Solvent reaction Test

Type and Standard	DPF PIPE 25mm / DPF PIPE 50mm
Temperature test	23℃
Condition Test	Put 200ml of cpvc bond in an open and closed container, store the sample in an airtight container such as a cpvc pipe, and leave it at room temperature
How to test	62kgf/cm² Destructive test(up to 100kgf/cm²) after holding for 2 minutes

Process

❶ Glue open in airtight container
▶

❷ Storage of samples in airtight container

▶
❸ CPVC bond reaction experiment after sealing

Result

Neglect period	3days		5days		7days		10days
PIPE 호칭 (mm)	25	50	25	50	25	50	25	50
Hydrostatic test limit failure value (kgf/㎠)	100 clear	91	96	92	96	92	98	96

Strong against bonds - Even after 10 days of solvent reaction test, water pressure of over 90kg was reached

A specification
of DPF

Mechanical Specification

Categoty	Specification	Note
Tensile strength	More than 50 Mpa	Fire department Notice 2022-13, KS M ISO 527-2
Pressure resistance	More than 6.0 MPa	Fire department Notice 2022-13
Strength break	More than 890 N	Fire department Notice 2022-13
Strength impact	More than 1.6m (DN 25↓)/ more than 2.3m (DN 25↑)	Fire department Notice 2022-13
Vicat softening temperature	More than 98℃	KS M ISO 2507-1 : 1995

Technical standards for performance certification and product inspection * Chlorinated polyvinyl chloride pipes

Categoty	Test standard
Tensile yield strength	15℃ tensile strength more than 50MPa
Pressure resistance test	There should be no abnormality when maintaining the water pressure 5 times the maximum working pressure for 2 minutes at a length of 10 times or more of the nominal diameter.
Break test	When placed on a metal plate and a load of 890 N applied at a rate of 13 mm per minute for 5 minutes, there should be no damage such as cracks and no abnormalities in the pressure resistance test afterwards.
Qualifying test	When pressure fluctuations are applied 3000 times at twice the maximum operating pressure at a rate of 10 times per minute to a pipe with a length of 10 times or more of the nominal diameter, there should be no cracks or leaks, and there should be no abnormalities in the pressure resistance test afterwards.
Impact test	Less than 25mm - After 24 hours of exposure, a 0.9kg steel bar is free-falling from a height of 1.6m and impact is applied. There should be no cracks or damage, and there should be no abnormalities in the pressure resistance test afterwards. Over than 25mm - After 24 hours of exposure, a 0.9kg steel bar is free-falling from a height of 2.3m and impact is applied. There should be no cracks or damage, and there should be no abnormalities in the pressure resistance test afterwards.

Dimension

•Pipe

Diameter	Outer diameter(O.D)	Thickness(t)	Approximate inner diameter(I.D)	Length(L)	Mass(g/m)
25	33.4 ±0.13	2.46+0.51	27.9	4m	410
32	42.2 ±0.13	3.12+0.51	35.4	4m	642
40	48.2 ±0.15	3.58+0.51	40.5	4m	831
50	60.3 ±0.15	4.47+0.53	50.8	4m	831
65	73.0 ±0.18	5.41+0.66	61.4	4m	1,898
80	88.9 ±0.20	6.58+0.79	74.8	4m	2,810
100	114.3 ±0.23	8.46+1.02	96.2	4m	4,638

* In accordance with ASTM F 442 / SDR 13.5 standard and technical standards for performance certification and product inspection of synthetic resin pipes for firefighting, the main dimensions of type 1 B are followed. (Fire Agency Notification No. 2022-13) * The dimensions of each product follow the dimensions of the drawing of the product. * 100mm is scheduled to be produced.

•Fittings

Diameter	O.D (Minimum)	d1	d2	I.D (Minimum)	H (Minimum)
25	42	33.66±0.13	33.27±0.13	25.4	28
32	51	42.42±0.13	42.04±0.13	34	32
40	58.6	48.56±0.15	48.11±0.15	40	36
50	72	60.63±0.15	60.17±0.15	51.4	40
65	87.2	73.38±0.18	72.85±0.18	62.2	46
80	104	89.31±0.2	88.70±0.2	76.4	48
100	130	114.76±0.23	114.07±0.23	101	54

Comparison with other piping
materials of DPF

Comparison with other piping materials

Category	Cpvc pipes	other piping materials
Ingredient	Chlorinated Polyvinyl Chloride	Metal components such as FE and CU
Corrosion	無 (Strong chemical resistance to microorganisms and oxidation)	有
Rust	無	有 (Occurs on inside/outside of pipe and welding part)
Scale	無 (No scale due to excellent corrosion and abrasion)	有 (Internal aperture narrowed by iron oxide)
Life span	No pipe replacement	Depending on the corrosion rate, pipe replacement is required
Fluid flow	No change in flow rate even after long-term use	Decreased fluid flow due to corrosion and scale
Thermal conductivity	Prevent condensation due to low thermal conductivity	Condensation occurs due to high thermal conductivity
Self-extinguishing	有 (superior to pvc)	有
Constructability	Bond bonding method enables construction in a short time with simple equipment	The welding method requires skilled workers and takes a long time to work.
Maintenance	No maintenance due to semi-permanent	Inspection/replacement required due to corrosion and scale
Economics	Since the construction cost is low and the piping can be used semi-permanently, there is no replacement cost	Installation cost is burdensome and replacement work is unavoidable due to pipe corrosion

Comparison of characteristics of fire extinguishing piping materials for sprinklers

Category	Features	CPVC pipes	Brass pipes L type (KS D 5301)	Steel pipes (KS D 3507)	Note
Press resistence	Press for using	12 ~ 15 kgf/㎠	12.3 kgf/㎠	12.3 kgf/㎠	Test pressure 1.5times
Heat resistence	Melting point	150 ~ 160 ℃	1,082 ℃	1,427 ~ 1,538 ℃	Limiting Oxygen Rate 60
	Thermal conductivity	0.12 (kcal/(h·m·℃)	320~380 (kcal/(h·m·℃)	46 (kcal/(h·m·℃)	Warmth and no condensation effect
	Applied area	Burial, fireproof structure, semi-noncombustible materials	wet	No limit	-
Corrosion resistence	Degree of corrosion	None	Slightly high	High	Oxidation metastasis, etc.
	Residual chlorine	Strong	Medium	weak	Fire extinguishing water (water supply)
	Flow coefficient(C)	150 (none)	120 (lower)	120 (lower)	Roughness(corrosion and scale)
Constructivity	Mass (kg/m)	About 0.50	0.97	2.46	D-25mm type
	Joining method	Adhesives, screws, flanges	Welding (soldering, brazing)	Threaded, welded, grooved, flanged	Fusing and bonding
	Work safety	excellent	Warning	Warning	Glue Ventilation required
	External shock	General	General	Strong	Be aware of UV rays
	Tools and equipment	Unnecessary	Necessary (welding machine, oxygen container, etc.)	Necessary (pipe mashing, welding machine)	Cutting and fastening
Durability	Life span	Semi-permanent	40~60years	10~20 years	Resistant to bases and weak acids

Construction method
of DPF

01. Task Management/Preparation

Because the cleanliness of pipes and connectors is important in the bonding method using bond, the workplace is well ventilated and maintains a constant temperature and clean environment.

* Workplace: High floor height and good ventilation

* Temperature : (15℃~18 ℃)

02. Pipe cutting

Use a special cutting tool
Cut the pipe squarely and check the cut

* Small band saw cutting machine / electric cutting machine (using metal blades of 3 mm or less)

* Low-speed cutting is recommended because heat damage can occur when cutting at high speed.

03. Chamfering

Use a chamfering tool to chamfer the outer diameter of the pipe from the length of the pipe to 10°~15°and remove foreign substances.

* Any foreign substances present during adhesive application can be a risk of leakage.

04. Prepare fitting

Remove moisture, dirt, and grease from the inside and outside of the pipe and inside the connector with a dry towel.
Uses air to remove burrs and debris inside the pipe
Mark and check the minimum insertion length on the outside of the pipe to be inserted.

05. Glue and Primer Preparation

Make sure to use cpvc adhesive
Remove dust and foreign substances from the bond entrance with a clean cloth, etc.
Shake well to mix the contents, then open the lid to check that there is no sediment.
(Dispose of adhesives that are too thin or gelatinous immediately.)

* It is recommended to use primer only when joining pipes of 80mm or more.

* Wear a mask when working and be careful not to inhale the smell directly.

06. Glue application

Apply the brush or application tool (brush) 3 to 5 times on the inside of the joint pipe evenly.
(Be careful not to flow inside the connector)
In the same way, apply evenly to the outer surface of the pipe 3 to 5 times as much as the depth of the fitting pipe insertion
(careful not to flow by applying thickly to the end)

* The number of applications increases as the pipe size increases.

07. Bonding and assembly

When the application is complete, hold the pipe and fitting and insert it while turning 1/3 to 1/2 turn, and hold it tight for 10 to 20 seconds to prevent it from being pushed out. (The bigger the aperture, the longer it stays)
Check the beads flowing out of the joined part

* When connecting, be sure to open at least one part of the pipe to discharge residual gas.

* If there is a defect such as air bubbles after joining, it must be cut and re-joined with a new product.

* When fastening screw products, wrap Teflon tape sufficiently around the male screw.

08. Compliance with curing time

The initial curing time and complete curing time for each standard must be followed.
Pipe separation and leakage may occur if the work and pressurization are performed before sufficient curing time.

* Check hardening time table for each standard

Construction Guidelines
and Precautions

01. Glue application

General pvc adhesive cannot be used, and we must use the cpvc-only adhesive allowed by our company.
Before application, the adhesive must be shaken well to mix well so that there are no sediments.
Do not use adhesives that have expired (2 years from the date of manufacture) or are hardened or jelly-like.
The product is always clean and free of dust, etc., and adhesive is applied in a dry state with moisture removed.
Excessive use of adhesive may cause cracks inside the pipe, so an appropriate amount must be applied.
Adhere to the insertion length between the pipe and the joint and apply the adhesive.

Caliber	25A	32A	40A	50A	65A	80A	100A
Minimum caliber	30	33	36	41	45	49	54

Adhere to the insertion length between the pipe and the joint and apply the adhesive.

Temperature	Standard
	25mm	32mm	40mm	50mm	65mm	80mm	100mm
15~38℃	6hours	6hours	12hours	12hours	24hours	24hours	24hours
4~15℃	12hours	32hours	32hours	48hours	96hours	96hours	96hours
-17~4℃	48hours	10days	10days	15days	15days	15days	15days

* During curing, external impact or force should not be applied.

* The size of the pipe, the degree of tightening when inserting, temperature and humidity, etc. affect the work and curing time.

* After the curing time has elapsed, the residual gas remaining inside the pipe must be discharged.

* The minimum curing time must be observed and a water pressure test must be performed.

If the working temperature is below 10 degrees during the winter season, the bonding quality and work efficiency may be deteriorated, so adjust the ambient temperature.
For small diameters less than 80 mm, it is recommended to use adhesive only. (Primer is used for large-diameter bonding)
Because it is volatile, do not store in a fire or high temperature place.
Adequate ventilation is required, do not directly inhale odors, close the cover after use and store at room temperature.
Wear a mask, avoid contact with eyes and skin, and in case of unavoidable contact, immediately wash with clean water and consult a doctor.

02. Plumbing

Must follow the order of Dury Chemical's 'DPF Construction Method'
In order to maintain product quality and prevent damage when assembling pipes and fittings, hammer impact and screw/groove/thermal processing are prohibited, other than the specified construction method.
When assembling pipes and fittings, if they fall below or exceed the specified dimensions and cannot be fully connected, forcible insertion is prohibited and tightened again after replacing the product.
When cutting pipes, avoid using damaged or worn cutting blades, and cut completely at right angles to ensure smooth insertion and leak prevention.
Do not break the uncut part by hand, and use it after additionally cutting 5~7CM or more when checking for damage to the cut surface.
Do not use various * other chemicals as they may damage the product.

* Other Chemicals: Threadlocker, acetone, thinner, insecticide, concrete crack repair agent, creosote, aromatic hydrocarbon compound, oil paint, etc.

Other Chemicals

Threadlocker
Acetone
Thinner
Insecticide
Concrete crack
repair agent
Creosote

+ When installing screw products, It is absolutely forbidden to use thread locker (Loctite) for products that are fastened with screws, and it is recommended to use Teflon tape for screw wires when fastening.

Threaded connection

For threaded marbling, conventional threaded connections must be used.
When working with threads, always check for compatibility with pipes and fittings
When assembling, be careful not to damage the product or cross the screw by applying excessive force.
When replacing valves or removing foreign substances, simply replace parts and reassemble.

Flange connection

The flange must be fastened so that the pipe line is maintained in a straight line.
Pipelines must be supported and secure to prevent lateral movement.
When tightening all bolts, washers and nuts must be inserted.
Forcibly tightening the bolts may damage the flange.
FF type (flat shape) gasket must be used

Grove adapter connection

groove adapter must be fastened so that the pipe line is maintained in a straight line.
When fastening, fasten with a product that meets the GP JOINT standard.
When tightening bolts, tighten them with an electric screwdriver alternately left and right 2 to 3 times.
If only one bolt is tightened strongly, there is a possibility of water leakage.
Apply a dedicated lubricant (grease, etc.) to ensure that the rubber ring is smoothly connected.

03. Hanger installation

Support spacing by standard

The support interval above is the minimum support interval. During actual construction, an additional hanger must be installed according to the piping condition. (Especially the connection part needs to be reinforced)
The area of the hanger in contact with the pipe must be free of rough or sharp edges. (We recommend using a rubber banding hanger)
The space between the hanger and the pipe maintains a 3mm gap to enable minute movement by contraction and expansion.

Caliber	25A	32A	40A	50A	65A	80A	100A
Minimum support meter	1.5	2.0	2.1	2.4	2.7	3.0	3.0

04. Hydrostatic Test Guidelines

In principle, the hydraulic pressure test of pipes is a wet hydraulic test.
Before the hydraulic test, the minimum curing time of the joined pipe is observed, and when it is completely cured after about 5 days, the hydraulic test is conducted.
Slowly fill the piping with water, allowing all air to escape from the highest and farthest sprinklers.
When the preparation for the test is completed, the test is performed for 2 hours at a pressure of 15.0KGF/cm², and the test is performed at a commercial pressure of 12.0KGF/cm² for a long-term test.
It is not recommended to perform a water pressure test in winter because there is a risk of freezing and bursting and the hardening time is long, and the use of antifreeze is prohibited as it causes cracks or damage to the product.
The air pressure test is never recommended, and if it is unavoidably carried out, it must be conducted after sufficient consultation with the manufacturer and the supervisor and approval from the supervisor.

* After temporarily conducting the air pressure test, be sure to conduct the water pressure test again.

* When testing using air pressure or gas, there is a risk of property damage and personal injury due to rupture due to strong pressure.

05. Storage and handling (transportation)

Must avoid Uv rayers, It is store that places are Proper temperature and well ventilated
To prevent deformation of the product due to heat, store it in a place without fire or high temperature.
Avoid direct sunlight and store the adhesive at the right temperature.
In order to prevent contamination and discoloration of the product, do not use or place it together with oil or other chemicals such as cutting oil, and keep it in its original packaging before use.
Stacked pipes are stored on a level ground with supports to prevent them from rolling, and in the case of joint pipe boxes, they are stored in a dry place so that they do not collapse due to water and humidity.
Product damage due to impact such as scratching, dragging, throwing, rolling, etc. must be prevented.
For safety, do not stand on the product or place heavy, sharp objects on pipes and fittings.
When loading and unloading and moving with a forklift, avoid dragging or dropping pipes and fittings on the floor.
Be careful not to damage or scratch the product due to the fork of the forklift or the impact of the work tool.
Products should not be loaded more than 2.5m, and in case of unavoidable loading, they must be loaded under the approval of the person in charge of the site.
You must fully understand the manual for other handling and use before proceeding with the work, and immediately discard damaged products due to negligence of the handler.

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