ALLSTEEL

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ALLSTEEL AIR DISHED & FLANGED HEADS PROCESS Two-step process of first: air dishing, then: flanging a head "¢ This process requires heads to be dished only with a female die. "¢ The head material may be pre-polished and paper protected before air dishing and the dished area of the head does not need to be re-polished. "¢ Air dished heads do not have internal stresses like spun heads. "¢ These heads do not have distortion problems when holes are cut in them. "¢ Many different sizes of heads can be made from the same female die. "¢ The dished head is trimmed to the required size needed to form the knuckle and straight flange. (using a flanging machine) "¢ The flanging process will scuff and mark the head on the inside and outside. "¢ This may require the head to be re-polished in these areas if a polished head is required. "¢ The knuckle may be formed to meet ASME requirements for knuckle radius along with the desired straight flange. Generation 3 Allsteel Dishing/Forming Head Press "¢ gives you the capability to produce dished heads (tank ends) of stainless steel up to 0.5 inches (12mm) in thickness, or of aluminum or carbon steel up to 0.6 inches (15mm) in thickness, in diameters varying from 3 feet (900mm) minimum in the lighter materials up to 15 feet (4500mm) maximum in all above noted thicknesses.

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