spiral pipe การใช้

These rings go on to round heavy duty duct work, typically made out of spiral pipe or single longitudinal pipe also known as blow pipe.
He observed the English Gloster Gamecock fighter with its Bristol Jupiter engine, which was an advanced design for the era with an automatic adjustment device for tappet clearance, spiral piping for even intake distribution, and a four-valve intake and exhaust system.
It was for the jury to decide, Baron Alderson said, whether or not a long spiral pipe is a reservoir, for if it be not a reservoir, or a colourable imitation of a reservoir, it is no infringement .
"We will boost our exports in order to comply with a government suggestion to boost foreign exchange earnings and also to anticipate the decline in domestic demand due to the postponement of many projects, " he said following the launching of the company's first bulk of its US $ 1 million spiral pipe exports to Australia, India and Singapore.
Its industries included manufacturings of cottons, woolens, silks, paper, felt hats, baking powder, soap, paper boxes, brick, plush goods, steam boilers, tools, automobiles, coin silver, bleach, candles, waterway gates, ice machines, pumps, moving-picture screens, overalls, perfumes, furniture, carpets, carburetors, spiral springs, spiral pipe, shirt waists, shirts, felt goods, lawn mowers; shipyards; foundries and machine shops; tanneries; leatherette works; plaster works.