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ASTM a106 a53b a192 a179 a210 iron steel pipe, US $ 600 - 2200 / Ton, API, ASTM, bs, DIN, GB, JIS, API 5CT, API 5L, API 5DP, ANSI A312-2001, ASTM A213M-2001, BS 4568, BS EN10217, DIN EN 10208-1-1998, DIN 2391, GB/T 8713, GB/T8162, JIS C8305-1999, JIS STPG380, JIS G3441, 10#-45#, 15NiCuMoNb5, A53-A36