JIS G3445 Carbon steel tubes maka ebumnuche nhazi igwe nke a Japanese Industrial Standard na-akọwapụta ọkpọkọ carbon ígwè, nke a na-akpọ ya "tube", eji maka igwe, ụgbọ ala, igwe igwe, arịa ụlọ, ngwa na akụkụ igwe ndị ọzọ.A ga-emepụta tubes ...
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