seamless steel pipes:GB8162/8163, ASTM A106/A53, API 5L GR.B,API 5CT Gr.J55/N80 OD:114-219mm WT:6-45mm Standard:GB,ASTM,API
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Beater Sheet , film heating , film heating materials , welded wire mesh , galvanized welded wire mesh , welding wire , mig welding wire