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New scope for stainless steel
Page 80
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tankers FROM A SPECIAL CORRESPONDENT NEW designs of lightweight stainless steel tanker aimed at extending the use of such tankers to the carriage of a wider range of commodities are now well established in the USA and are beginning to be seen on European roads.
The essential difference from previous . forms of stainless steel tank is the use of stressed-skin principles which enable a tanker in this material to be built at a cost competitive with other tank materials while retaining the inherent advantages of stainless steel. The chemical-resisting and hygienic advantages of nickel-containing steel have encouraged the use of this material for specialized tasks, but expense and weight have limited the material's application in conventional form for a wider range of products in competition with light alloys.
Extensive design studies by International Nickel are the basis for the, new lightweight stainless steel designs, which are said to result in a vehicle of low weight and high strength, suitable for maximum payloads.
Thin stainless steel sheet and rolled sections are used for the new type of tanker, the thin shell being stiffened with welded ring members; this produces a rigid tank with a beam strength permitting the use of frameless or light-sub-frame tank semi-trailers.
In the US, the new method of design has effected a weight saving of about 15 per cent in uninsulated tankers, while costs have been reduced by about 20 per cent, making stainless steel tankers an economic proposition for a wider range of operators than was previously the case. Tankers of this type have been running on American roads for over three years now, carrying an impressive variety of loads.
The first tanker in the United Kingdom based on the International Nickel concept was built some 18 months ago by Thompson Bros. (Bilston) Ltd., while in France a semitrailer tanker incorporating the stiffened thinshell design has already covered 70,000 km. over particularly difficult routes with complete success.
New Telephone Number: A new telephone number has been allocated to the London office of Whessoe Ltd.—Whitehall 3201.