Spherical Socket End Pipe With Air Chamber is the most widely used type of joining pipe is Spherical socket end pipe. It is relieved with beveled ends which are made with special equipment in compliance with the relevant standards. Usually, the pipes are spiral welded. Because it is convenient for welding on site.
This kinds of Joint provides the possibility of a rotation 10 degrees at the pipeline without the utilization of any special fittings. Steel pipes are welded from outside after proper erections according to the required angle.
Description of Spherical Pipe Details
| Norme tube / Pipe standard | EN 10224 |
| Diamètre normalisé / Nominal diameter DN | ISO 6708 |
| Diamètre extérieur / External diameter | 457.2 (18-inches) |
| Epaisseur / Thickness | 8MM |
| Type de conduite / Pipe type | Spiralée / Spiral welded |
| Type de joint / Joint type | Joint rotulé / Spherical socket joint |
| Usage / Use | Eau de rivière / River water |
| Profondeur totale de la tulipe / Total bell depth | 120mm |
| Nuance d’acier / Steel grade | L235 |
| Tolérance de l’angle d’emboîtement/Tolerance of angle | 0-8° |
| Poids revêtu / Coated Weight | According to Requires |
Drawing of Spherical Socket End Pipe
Main Advantages of Spherical Socket End Pipe With Air Chamber
- It is Easy to join pipes together.
- Reducing installation time and costs.
- Only external welding required on site.
- No internal lining repairs are necessary after on-site welding.
Sample of Spherical Socket End Pipe
Feature of Socket Weld
The spherical socket which enables the possibility of a rotating 6° to 10° depending on the pipe diameter. Socket weld is easy to install. But it requires approx. 1/16” of the gap at the bottom of the pipe to socket into, to allow thermal expansion. This gap can lead to an over-stress problem that cracks the fillet weld of the fitting. Socket weld is troublesome in corrosive fluid service due to crevice corrosion. And it is easy to corrode due to the discontinuity of the smooth pipe internals.
Butt-weld is the “best” in terms of strength, fatigue. And corrosion resistance, and temperature compliance. However, it is more difficult to fit-up and weld properly, needing skilled welder and much time.
Different Coating For Spherical Socket End Pipe
Internal coating – EPOXY according to EN 10339. Etat de surface avant application du revêtement intérieur according to ISO 8501-1/8501-2. SA2.5 ou/or SA3.0. 250mm Couche minimale de revêtement intérieur.
Revêtement extérieur / External Coating – 3-Layer POLYETHYLENE Couche minimale de revêtement extérieur / minimal thickness 4mm.
This is one description for internal and external coatings. And we could customized other kinds of coating according to your requirements. Talk to us today.
About the “Air Chamber”
You will see the air chamber in the picture white area. The purpose is not to heat and damage the internal coating while the external welding on the building site. We use a steel ring to weld on the pipe end. And to have space which we called “Air chamber”.
Spherical Socket End Pipe Transportation
Transportation of pipes by vessels according to the API 5LW Recommended Practice for Marine Transport by Barges and vessels. Handling and storage procedures are also based on API related customer requirements. Our factory is mainly available for the land, sea and railway transportation due to their proper locations.
We recommended Open Top Container when shipping by sea. If pipes with coating inside and outside, it will easy to have damage with coating during the loading and unloading process. Especially for unloading port. If the facility is not suitable. It will very hard for unloading without damage. If no coating, it will be ok whichever kind of container you prefer.
Steel pipes after manufactured completely loaded with special apparatus used for the protection of the pipes and coatings during the loading operation.
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