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1.standard:API 5L, ASTM A106, ASTM A53, DIN, BS, JIS, ISO
2.Material:Carton steel (10# steel, 20# steel, 35# steel), A106 Gr.B, A53 Gr.B, 16Mn, X42, X52,
3.thread:ANSI B1.20.1/BS21

1.standard:API 5L, ASTM A106, ASTM A53, DIN, BS, JIS, ISO
2.Material:Carton steel (10# steel, 20# steel, 35# steel), A106 Gr.B, A53 Gr.B, 16Mn, X42, X52,
3.thread:ANSI B1.20.1/BS21



