What is pipe coating bitumen enamel?We are producer of bitumen enamel is a pipe coating products applied durable coating based on bitumen enamel which is a type of modified bitumen that has been successfully used for many years for corrosion protection of steel pipes.
Advantage of bitumen enamel.Bitumen enamel has excellent adhesion to steel provides a track record of long term corrosion resistance. Bitumen enamel used for pipelines designed to different application such as water, gas, oil or any other fluid when the continuous temperature of the fluid being transported does not exceed 70°C (I 58°F)! Bitumen enamel is safer and more environmentally friendly system then coal tar enamel because of acidity of tar. Bitumen enamel pipe coatings with varying grades of bitumen enamel and inner and outer wraps along with a thickness as per your design specification. The enamel can be applied to various pipe diameters from 90 mm (3.5\”) to over 1200 mm (48\”). Enamel pipe coating bitumen based material is using for many years across the world.
How to use bitumen enamel?BITUMEN ENAMEL should be broken up into small pieces and put into the kettle. Heat should be applied slowly until there is a quantity of melted Enamel on the bottom of the kettle. Kettles used previously for bitumen should be thoroughly cleaned before use. The quantity of enamel remaining in the kettle from previous use should not exceed 10% of the fresh charge. The maximum temperature of Enamel in the kettle should never exceed 250 C and the Enamel in the kettle should be stirred constantly during the use. The normal application temperature of Enamel is related to its grade but it is normally between 220-240 C. Enamel above this temperature should be rejected. Enamel should not be applied to the primer pipe when the metal temperature is below 7 C and care should be taken for the pipe is free from dust, oil and moisture.
Specification of bitumen enamel.
|Characteristics||Grade A||Grade B||Grade C||Test method|
|Filler content by ignition, mass%||25-35||25-35||45-55||BS 4147 Appendix B|
|Density @ 25 C.g/cm3||1.2-1.4||1.2-1.4||1.4-1.65||A BS 4147 C ppendix|
|Softening Point (ring & ball), C||100-120||115-130||120-150||BS 2000: Part 58|
|Penetration @ 25 C. 10-1 mm||10-20||5-17||5-15||BS 2000: Part 49|
|Flash point (Cleveland open Cup), min, C||250||260||260||BS 4689|
|Sag,max,mm @60 C, 24h @75 C, 24h||1.5 –||– 1.5||– 1.5||BS 4147: Appendix E|
|Bend @ 0 C, min, Mm||20||15||10||BS 4147: Appendix F|
|Impact, disbanded area, max,mm 2 @ 0 C @25 C||15000 –||– 6500||– 6500||BS 4147: Appendix G|
|Peel, initial & delayed , max., Mm @ 30 C @ 40 C @ 50 C @ 60 C||3.0 3.0 3.0 3.0||3.0 3.0 3.0 3.0||– 3.0 3.0 3.0||BS 4147: Appendix H|