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CSST is used as an alternative to the older standard “black iron” (steel) gas pipe. The inner stainless steel layer of typical residential CSST is .2 to .3 mm thick while the wall thickness of typical residential “black iron” gas pipe is 3 to 4 mm thick. CSST is more expensive than “black iron” gas pipe.
Addyston Pipe and Steel Co. v. United States, 175 U.S. 211 (1899), was a United States Supreme Court case in which the Court held that for a restraint of trade to be lawful, it must be ancillary to the main purpose of a lawful contract. A naked restraint on trade is unlawful; it is not a defense that the restraint is reasonable.
The most common materials for corrugated iron are ferrous alloys (e.g. stainless steels), aluminium and copper. Regular ferrous alloys are the most common due to price and availability. Common sizes of corrugated material can range from a very thin 30 gauge (0.012 inches, 0.3 mm) to a relatively thick 6 gauge (0.1943 inches, 5 mm). Thicker or ...
The multiple pipes were then sealed together with hot animal fat. Wooden pipes were used in Philadelphia, [24] Boston, and Montreal in the 1800s. Built-up wooden tubes were widely used in the US during the 20th century. These pipes (used in place of corrugated iron or reinforced concrete pipes) were made of sections cut from short lengths of wood.
British business interests were split on colonial iron: manufacturers appreciated the lower prices due to colonial imports, but the British iron and steel industry objected to the competition. Parliament compromised in the Iron Act 1750 , which eliminated the import duty on colonial pig iron, but barred the manufacture of steel or of iron plate ...
The popularity of both shingles and ceilings encouraged widespread production. With further advances of steel sheet metal production in the 1890s, the promise of being cheap, durable, easy to install, lightweight and fireproof gave the middle-class a significant appetite for sheet metal products.