Line pipe for the transportation of oil, natural gas and chemical materials
Standards: AP-5L PSL1/PSL2 GB/T9711.1-1997 GB/T9711.2-1999Steel
Grade :A,B,X42,X46,X52,X56,X60,X65,X70
ERW Casing pipepetroleum and nature air exploration
Standards: API SPEC 5CT, SY/T5989
Materials :H40 J55 K55
Structure and Mechanical Roundpipe and Tubing
Standards: JIS3466,JIS3445; ASTM A513; GB/T 6728-2002
Steel Materials: carbon steel or low ally steel
Structure and Mechanical Square or Rectangular Pipe
Standards: GB/T3091 JIS G3452
Steel grade: Q215A,Q215B,Q235AB ,Q295AB,Q345AB
