What is the difference between SS & ES Pipes ?

SVCP pipes are produced according to GSO EN 295:2008 standards in two types SS & ES, fully complying to EN 295 standards.


DN

EN 295 CLASS

SVCP CLASS

100

22,28,34,40

SS

150

22,28,34,40

SS

200

120,160,200

SS

200

240

ES

250

120,160,200

SS

250

240

ES

300

120,160

SS

300

200

ES

*350

120,160,200

ES

400

95,120

SS

400

160,200

ES

*450

95,120,160

ES

500

95,120

SS

500

160

ES

*600

L,95,120,160

ES

*700

L,95,120

ES

*800

L,95,120

ES

*900

L,95

ES

*1000

L,95

ES

*1200

L,95

ES

* Pipes produced in ES standards only.

 
What is the difference between SS & ES pipes (SASO classification) ?

The main difference is pipe thickness, were ES pipes are thicker & have higher crushing strength, hence can resist higher loads. According to design criteria, SS or ES pipe may be specified.

 
The pipes are deflected (not straight) ?

All V.C.Pipes has a permissible deviation from straightness of the barrel. According to standards, deviation from straightness shall be not greater than the values below:

Nominal Size

Deviation mm / meter

DN < 150

5

150 <= DN < 200

4.5

200 <= DN <= 300

4

DN > 300

3

* Other required properties as per EN 295 - 1 specification.

 
How the rubber supplied with the pipes ?

All Saudi Vitrified Clay Pipes are supplied with built in flexible joints (rubber), which are molded /fixed on the pipe.

 
How long I can store the pipes under open store conditions (UN covered & subject to normal weather conditions ?

All glazed vitrified clay pipes & fittings can stored at open yard for definite periods, but rubber joints part should be protected from sun by covering edge of the pipes, if will not be used within 12 month period from date of delivery.

 
I have problems with Water tightness of the pipes ?

All V.C pipes are tested strictly according to EN 295 requirements (clause 9 of EN 295-3 & clause 2.14 of EN 295-1), hence you should follow & comply with the testing procedures & parameters and should not exceed the testing limits, such like pressure of 0.5 bars & the total testing time of 75 min. to avoid any inconvenient.

 
What is the Hydraulic Roughness for V.C.Pipes ?

Vitrified Clay Pipes & fittings produced according to EN 295 standards have a low hydraulic roughness. Typical values of hydraulic roughness for Vitrified clay pipes are from 0.02 mm to 0.05 mm.

 
What is the abrasion resistance for V.C.Pipes ?

Vitrified clay pipes & fittings produced according to EN 295 are resistant to abrasion. Typical values of average abrasion resistance for Vitrified clay pipes are from 0,2 mm to 0,5 mm.

 
If the trench over excavated? Is it safe to use the same specified bedding? Or what type of bedding I should use ?

As design of bedding type is related to trench depth & width, hence any change in these factors, may affect the bedding type required fore safe installation of V.C.Pipe line. Hence if trench width / depth has over excavated, then you should check the suitability of using the same bedding type.

 
Can I use any kind of lubricant to connect the V.C. pipes ?

There is a special lubricant used to connect both ends of V.C.Pipes, which enough quantity is supplied free of charge with the pipes. You should only use the supplied lubricant of SVCP and no other type of lubricant may be used, as this may affect/harm the quality of jointing materials of the pipes.

 
How to cut V.C.Pipes at site ?

V.C.pipes up to DN 450 may be cut at site according to site conditions & as required, by using special cutting chain, which is available at SVCP. Bigger sizes can be cut carefully by using cutting disc.

A special cutting ring is available to cut DN 100 & 150.

 
How can we lay V.C.Pipes ?

Laying V.C.pipes, is as easy as push & fit operation. Pls. follow the easy steps stipulated in SVCP brochures & catalogues.

- Practical tips for laying vitrified clay pipes professionally

- V.C.Pipe laying

 
What is the truck load of pipes ?
DN Class Pipe Length Weight Quantity / Pallet Pallet Dimension (CM) Weight / Pallet Number of Pallets per Truck Length per Truck
Meter Kg / Meter Meter Piece X Y Z Kg Meter
100 34 1.00 19 70 70 101 154 118 1342 18 1260
150 40 1.50 24 75 50 101 213 171 1816 13 975
200 160 1.75 36.5 56 32 113 230 196 2067 12 672
200 160 2.00 36.5 64 32 113 230 230 2395 10 640
200 240 2.00 53 48 24 125 225 186 2569 10 480
250 160 2.00 49 36 18 105 210 227 1791 10 360
250 240 2.00 72 30 15 114 225 189 2189 10 300
300 160 2.00 62 36 18 122 250 230 2265 10 360
300 240 2.00 94 30 15 218 233 131 2855 8 240
350 200 2.00 123 24 12 151 204 226 2952 7 168
400 120 2.00 100 16 8 107 214 227 1633 10 160
400 200 2.00 150 16 8 114 229 229 2437 10 160
450 160 2.00 178 12 6 136 196 230 2175 10 120
500 120 2.00 143 12 6 133 202 232 1755 10 120
500 160 2.00 228 12 6 140 196 230 2777 9 108
600 160 2.00 305 12 6 167 232 252 3702 5 60
700 120 2.00 360 8 4 180 200 232 2914 5 40
800 120 2.00 443 8 4 217 221 227 3581 5 40
900 95 2.00 495 8 4 235 248 237 3999 5 40
1000 95 2.00 650 8 2 260 292 234 2647 5 36
1200 95 2.00 810 2 1 165 170 213 1672 8 16
 
What is GE, GZ & GA ?

GE, GZ & GA are the flexible connectors used to maintain a high flexibility of the pipe line at the manhole areas.

GE: Short pipe of socket/spigot type (25 cm long), Fixed through manhole wall & normally it has the length of the manhole wall thickness.

GZ: Short peace of pipe of socket/spigot type (75 cm long), fixed at the inlet end of the manhole to absorb differential settlement or tilting movements of manhole & pipeline.

GA: Short peace of pipe of spigot/spigot type (75 cm long), fixed at the outlet end of the manhole to absorb differential settlement or tilting movements of manhole & pipeline.


 
When can I use mechanical compactors over V.C.Pipeline ?

Initial backfilling takes place after the pipe has been installed. The initial backfill extends from the bedding material, up the sides of the pipe, to a level approximately 300 mm over the tope of the pipe. The initial back fill should be carefully placed as soon as possible to maintain pipe alignment & protect the sewer line. No mechanical compactors should be used for initial back fill. Final backfill extends from the initial backfill to the top of the trench. It should be placed in layers not to exceed 300 mm when using water compaction. If mechanical compaction required to achieve a high degree of compaction, then a selection & use of suitable compaction equipment must be made with care so that the pipe will not be disturbed or damaged. Heavy mechanical compacting equipment such as highway type sheepsfoot rollers, dozers & loaders, should not be used until a cover of at least 150 cm has been obtained over the top of the pipe. Pneumatic tampers, vibratory pads and self controlled trench compactors and light weight plate compactors can be used.


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