Details of X80Q seamless steel pipes commonly used in industrial projects

1. Implementation standards of X80Q seamless steel pipes; API SPEC 5L pipeline steel pipe specifications, GB/T9711 steel pipes for pipeline transportation systems in the petroleum and natural gas industry
2. Chemical composition of X80Q seamless steel pipes: carbon: ≤0.18, silicon: ≤0.45, manganese: ≤1.90, phosphorus: ≤0.025, sulfur: ≤0.015, copper: ≤0.5, nickel: ≤1, chromium: ≤0.5, molybdenum: ≤0.5, boron: ≤0.004.
3. Mechanical properties of X80Q seamless steel pipes: yield strength 555~705MPa, tensile strength: 625~825MPa, yield ratio: ≤0.93
4. Product specifications of X80Q seamless steel pipes: outer diameter 21.3mm~1016mm , wall thickness 2.0~140mm.
5. X80Q seamless steel pipe products shall comply with TSG D7002 pressure piping component type test rules.

Steel pipes shall be delivered by the dimensions specified in the order contract and by the corresponding deviations. The specified outer diameter and specified wall thickness shall comply with the specified corresponding limit range. Steel pipes shall be delivered by the non-fixed length or fixed length specified in the order contract.

Steel pipe inspection documents for X80Q seamless steel pipes
The manufacturer shall issue an inspection certificate by 5.1.B of GB/T18253-2000 or an inspection certificate by 3.1 of EN10204:2004. If the order contract stipulates another replacement method, the manufacturer shall issue an inspection certificate by 5.1. or 5.1.C of GB/T18253-2000, or an inspection certificate by 3.2 of EN10204:2004.

The following information shall be provided for each order lot when applicable: specified outer diameter, specified wall thickness, steel pipe grade, PSL, steel pipe type and delivery status; chemical composition (melt analysis and product analysis) and carbon equivalent (product analysis and acceptance limit); tensile test results and specimen type, size, location and orientation; CVN Impact test results; Specimen size, orientation and location; Test temperature and acceptance limit applicable to specimens of specific size; DWT test results (single test results and average test results); Specified minimum hydrostatic test pressure and specified stabilization time; For welded pipes, the weld non-destructive testing method used (radio, ultrasonic or electromagnetic); Type and size of reference reflector or image quality meter used; For seamless pipes, the non-destructive testing method used (ultrasonic, electromagnetic or magnetic particle); Type and size of reference reflector used; For high frequency welded (HFW) pipes, the minimum temperature of weld heat treatment; Where applicable, proof that butt-jointed steel pipes and/or oil-through pipes meet the requirements of Annex A and/or Annex I; Name and location of equipment used for steel pipe manufacturing, steel strip (coil)/steel plate rolling and steelmaking; Results of any additional tests specified in the order contract.