| P | Pipes and tubes, cast iron |
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| P | Pipes and tubes, wrought iron |
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| P | Pipes and tubes, nickel-molybdenum iron alloys |
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| P | Pipes and tubes, carbon steel |
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| P | Pipes and tubes, mild steel |
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| P | Pipes and tubes, alloy steel |
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| P | Pipes and tubes, stainless steel |
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| P | Pipes and tubes, sheet metal |
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| P | Pipes and tubes, ferrous, extruded |
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| P | Pipes and tubes, ferrous, centrifugally cast |
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| P | Pipes and tubes, steel, seamless |
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| P | Pipes and tubes, steel, open seam |
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| P | Pipes and tubes, steel, electrically welded |
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| P | Pipes and tubes, steel, lap welded |
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| P | Pipes and tubes, steel, butt welded |
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| P | Pipes and tubes, steel, fusion welded |
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| P | Pipes and tubes, steel, tungsten inert gas (TIG) welded |
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| P | Pipes and tubes, steel, precision welded |
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| P | Pipes and tubes, steel, hot stretch reduced |
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| P | Pipes and tubes, steel, flared |
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| P | Pipes and tubes, steel, dimpled |
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| P | Pipes and tubes, steel, perforated |
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| P | Pipes and tubes, steel, precision |
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| P | Pipes and tubes, steel, clad |
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| P | Pipes and tubes, steel, thin wall |
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| P | Pipes and tubes, steel, thick wall |
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| P | Pipes and tubes, steel, brass cased |
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| P | Pipes and tubes, steel, multi-bore |
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| P | Pipes and tubes, steel, spiral wound |
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| P | Pipes and tubes, steel, oval |
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| P | Pipes and tubes, steel, square |
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| P | Pipes and tubes, steel, rectangular |
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| P | Pipes and tubes, stainless steel, seamless |
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| P | Pipes and tubes, stainless steel, thin wall |
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| P | Pipes and tubes, ferrous, galvanised |
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| P | Pipes and tubes, ferrous, tapered |
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| P | Pipes and tubes, ferrous, threaded |
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| P | Pipes and tubes, ferrous, cold drawn, skived and burnished |
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| P | Pipes and tubes, ferrous, gilled, finned or extended surface |
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| P | Pipes and tubes, ferrous, glass lined |
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| P | Pipes and tubes, ferrous, enamelled |
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| P | Pipes and tubes, ferrous, chromium plated |
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| P | Pipes and tubes, ferrous, tin coated |
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| P | Pipes and tubes, ferrous, powder coated |
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| P | Pipes and tubes, ferrous, cement coated |
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| P | Pipes and tubes, ferrous, insulated |
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| P | Pipes and tubes, ferrous, plastic coated |
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| P | Pipes and tubes, ferrous, rubber lined |
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| P | Pipes and tubes, ferrous, plastic lined |
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| P | Pipes and tubes, ferrous, quick coupling |
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| P | Pipes, insulating (Bergmann), ferrous |
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| P | Tubing, steel |
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| P | Tubing, stainless steel |
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| P | Tubing, stainless steel, seamless |
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| P | Tubing, chromium steel |
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| P | Tubing, steel, lock seamed |
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| P | Tubing, steel, spiral wound |
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| P | Tubing, steel, for domestic heater elements |
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| P | Tubing, stainless steel, microbore |
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| P | Tubing, ferrous metal, with integral heating coil |
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| P | Tubing, hydraulic, ferrous |
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| P | Tubes, steel, capillary |
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| P | Coiled pipes, steel |
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| P | Coiled pipes, stainless steel |
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| P | Coils, ferrous, heat exchanger |
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| P | Flues and ducts, ferrous metals |
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| P | Ducts, ferrous, thermally insulated |
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| P | Ducts, ferrous, for electric cables |
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| P | Ducts, ferrous, for heating systems |
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| P | Ducting, steel to mineral fibre bonded, fire resistant |
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