Welcome to visit Boai Steel Group Website!
Welcome to visit Boai Steel Group Website!
Welcome to visit Boai Steel Group Website!
Location:Product Center >> ERW Steel Pipe >> Oil Casing Steel Pipe 9th edition
  • 产品名称: Oil Casing Steel Pipe 9th edition
  • 产品编号: 0001
  • Views : 99

Name of product: Oil Casing Steel Pipe 9th edition
Standard: API5CT
Grade of steel: J55
Specification: Φ219.08×8.94×12000mm
Technical requirement
O.D. tolerance: -0.5%—1.0%D
Tolerance of Wall Thickness: ≤-12.5%t;
Tolerance of Length :0—+20mm;
Straightness: pipe length≤0.2%L; pipe end≤3.18mm in 1.5m;
Outside bur: almost abreast with the base metal
Inside bur: ≤1.14mm, radial offset≤0.05t
Imitate normalizing heat treatment;
Hydrostatic Pressure Test≥24.5MPa   time holding test pressure≥5s
NDT: the full length (100%) of welding seam UT
Total length drift test