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Quick Details Standard: JIS, DIN, ASTM, bs, API, GB, JIS G3454-2007, DIN 1626, DIN EN 10305, DIN EN 10025, ASTM A106-2006, ASTM A513-2007, ASTM A335M-2006, BS EN10025, API 5CT, API 5L, API 5DP, GB...