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KPE manufactures a complete range of American Petroleum Institute (API) certified casing thread types, including short round thread casing (STC), long round thread casing (LTC) and buttress thread casing (BTC). STC and LTC both feature a non–runout design of round threads, each with eight round crested threads per inch. BTC has a square thread with a flat root and crest, a runout design, and five buttress threads per inch.
KUNYUAN is one of the leading api 5ct ltc stc btc casing manufacturers and suppliers in China. Our factory has rich experience in manufacturing high value-added and high quality api 5ct ltc stc btc casing. We will offer you the best quality and durable products. Please rest assured to buy.