* together you decide whether to begin work. * either a set number of sessions, usually once weekly, lasting 50 minutes for one to one counselling and one and half hours for group therapy. * or you agree to work together ongoingly with a commitment to giving a minimum of one months notice that you will end the work.
Needle coke, also called acicular coke, is a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminium industries and is particularly valuable because the electrodes must be replaced regularly. Needle coke is produced exclusively from either FCC decant oil or coal tar pitch.
Steel is a purified alloy of iron with carbon which is manufactured in the liquid state. The manufacturing process eliminates almost all of the phosphorus, sulfur, and silicon which exist in common cast iron. The range of carbon content for steels is 0.1 to 1.5%. Low carbon steels (<0.2% carbon) are called mild steels.