1.production technology : hot-rolled welded, hot-expanding
2.Executive standards: GB/T 3091-2001, ASTM A106/A53, API 5L /5CT
3.Specification range:OD: 4”-36”WT: SCH10-SCH80
4. Materials: Q235B,Q345B, L245, GrB, X42-70 etc
5.  Testing: Eddy current/ Hydrostatic/Ultrasonic/ Intergranular Corrosion etc
6..Packing:seaworthy packing.
7.Application: