مرداد ۱۰, ۱۳۹۵
Bituseal® Outerwrap
مرداد ۱۲, ۱۳۹۵
Show all

Download PDF version here

Product Data Sheet

Product Name:
EN 10300 Category 2, Grade b

Product Description

The Bituseal®Enamel is based on a specially selected bitumen, modified with high performance engineering polymers. This polymer modification ensures improvements of a number of the product’s qualities, e.g. flexibility, adhesion and durability. Bituseal®Enamel is supplied in different types/grades, depending on the varying requirements for corrosion protection materials for pipelines.


Bituseal®Enamel is available cold in 20 kg block or hot in bulk.


Bituseal®Enamel is applied to steel pipes, previously primed with Bituseal®Primer, at 190-230°C using computer controlled extrusion technology, which ensures an optimum coating quality. Optimum adhesion and bleed-through is obtained when the pipe surface temperature prior to coating is 30-50°C. However, minimum surface temperature is 15°C and 3°C above the dew point. Minimum enamel thickness is 4.0mm.


Heated Bituseal®Enamel is to be stored under constant low-speed stirring. Storage temperature and duration depends on the Bituseal® grade stored.


The Bituseal®Enamel meets or exceeds all the performance requirements of  EN 10300.

Quality Control

All raw materials for Bituseal®Enamel are tested and approved in the laboratories of Varziran. The quality of the finished enamel is controlled to either EN 10300 or the the costumer’s specific requirements and a quality certificate is issued for each batch produced.


Bituseal®Enamel is suitable for pipelines operating at temperatures in the range -30°C to 90°C. The enamel is environmentally safe.

Mechanical Protection

A polypropylene shield can be applied to the Bituseal®coated pipe in order to obtain improved mechanical protection of onshore pipelines.

BITUSEAL® ENAMEL Category 2, Grade b
Technical Data
PropertiesUnitRequirementMethod of test
Softening PointºC110 to 130EN 1427
Penetration0.1 mm5 to 17EN 1426
Density at 25 ºCg/cm31.2 to 1.4EN 10300, Annex L
Filler Content%25 to 35EN 10300, Annex K
Flash PointºCMin 260EN/ISO 2592
Sag at  75 ºC , 24 hºCMax 1.5EN 10300, Annex D
Impact disbonded area @ 0 ºCmm2Max 6500EN 10300, Annex E
Peel Initial / Delayed at

30  ºC

40  ºC

50  ºC

60  ºC





EN 10300, Annex F, F.4.2
Bend at -10 ºCºCMin 15EN 10300, Annex G
Cathodic Disbonding, Disbonded radius after 28 daymmMax 7EN 10300, Annex I