What is the difference between SS & ES Pipes?

SVCP pipes are produced according to Saudi Arabian Standards (SASO 236) in two types SS & ES, fully complying to EN 295 -1 standard. Below table shows combatable classes between SVCP & EN295:

* 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)?

* mm/m nominal length.

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. Click here for bedding tables.

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?

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.