(SZTSP)Tianjin Shenzhoutong Steel Pipe Co., Ltd. Company Size SZTSP with investment RMB 106 million, was founded in 2001 and occupies a site space 86,000 sq. meters and A building area of 12,600 sq. meters. Annual output is 120thausand tons.It established automatic PLC control production line and perfect Measuring &test center. Product manufacturer of HFW / ERW steel pipe. OD: 5 1/2-13 3/8"(139.7-339.7mm);WT: 0.203-0.5in(5.2-11.1mm), Steel grade:A,B,X42-X70, Q235,Q345,L245,H40,J55,K55;Standards: API spec 5L, API 5CT, ISO 9001-2008. Quality Control Charpy Impact test, Automatic Tensile test, Chemical Analysis, Metallographic Examination, Process Inspection, Hardness Test, Flattening Test, 100%Hydrostatic test, UT, etc. ***************2001*，****86000m2，****12600m2，***1.6****。**********，***12**。 *****FF**、********、*****、******。**、**，**********。**********、***、**、**、*******，*****、**、**、**、*****。 *****Φ140mm-Φ340mm，**5.2-11.1mm，**J55、K55*X70。**********API 5L, API5CT，ISO9001-2008，********ASTM A53**EN10219-2****GB/T9711.1，GB/T9711.2，3091-2008，13793-2008，14291-2006******。