Steel, fittings pipe, cost

Cost and installation time for carbon-steel welded pipe and fittings. 

Cost of carbon-steel screwed pipe fittings. 

Cost and installation time for stainless-steel welded pipe and fittings. Prices are for types 304 and 304L. For types 316 and 347, multiply by 1.25 for type 316L, multiply by 1.45. 

The copolymers have been used in the manufacture of extruded pipe, moulded fittings and for other items of chemical plant. They are, however, rarely used in Europe for this purpose because of cost and the low maximum service temperature. Processing conditions are adjusted to give a high amount of crystallinity, for example by the use of moulds at about 90°C. Heated parts of injection cylinders and extruder barrels which come into contact with the molten polymer should be made of special materials which do not cause decomposition of the polymer. Iron, steel and copper must be avoided. The danger of thermal decomposition may be reduced by streamlining the interior of the cylinder or barrel to avoid dead-spots and by careful temperature control. Steam heating is frequently employed. 

The estimated cost of the pipes, per unit length is schedule 40 carbon steel 3 ( 5), schedule 80 carbon steel 5 ( 8.3), stainless steel (304) schedule 40 15 ( 24.8). Installation and fittings for all the materials adds 10 ( 16.5) per unit length. 

Poly (3,3-Bis(Chloromethyl)Oxetane) This is marketed by Hercules as Penton chlorinated polyether. Its thermal, flame, and chemical resistance are used primarily for corrosion-resistant equipment in the process industries, such as valves, fittings, pumps, meters, and linings for steel pipe and tanks, for service in many corrosive atmospheres up to 250°F. or higher. At 4.50/pound, growth possibilities appear limited by increasing competition from lower-cost materials. 

Cost of carbor>steel screv d pipe and fittings. 

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