Tianjin Qiyuan Steel Tubular Trading company

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Tianjin Qiyuan Steel Tubular Trading company

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seamless steel oil pipe
Specification: kinds of
Detail: Specification Steel Grade Threads 4 1/2¡±, 11.6# J55, K55, N80, L80,P110 BTC, LTC, STC, 5¡±, 15# J55, K55, N80, L80,P110 BTC, LTC, STC, 5¡±, 18# J55, K55, N80, L80,P110 BTC, LTC, STC, 5 1/2¡±,17# J55, K55, N80, L80,P110 BT...


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