SA335P91 seamless steel pipe A335P91 alloy steel pipe

SA335P91 Seamless steel pipe A335P91 Alloy Steel Pipe

Implementation standards: ASMESA335P91 seamless pipe American Society of Mechanical Engineers ferritic alloy Seamless Steel Pipe for high temperature use, ASTMA335P91 alloy steel pipe American Society for Testing and Materials ferritic alloy seamless steel pipe for high temperature use.
Tensile strength ≥585, yield ≥415
Product specifications: outer diameter 21.3mm~762mm, wall thickness 3.0mm~140mm
Production method: hot rolling, forging, delivery status: heat treatment.

Hydraulic pressure test: Each pipe shall be subjected to a hydraulic pressure test. Without special requirements, each nominal pipe shall be subjected to non-destructive testing in lieu of hydrostatic testing.
GNEE Group will conduct a hydrostatic test on the nominal pipe according to your requirements and then proceed with non-destructive testing.

• Non-destructive testing

Each nominal pipe shall be subjected to non-destructive testing in accordance with the requirements of Practice Code E213, E309 or E570, and the nominal pipes that can be tested by each inspection method. The specification range should be subject to the limitations of each method. Ultrasonic testing can be used to detect defects with longitudinal and circumferential orientations. It should be understood that different testing techniques should be used to detect defects with different orientations. Ultrasonic testing cannot detect short and deep defects. The cited eddy current inspection method is capable of detecting major defects, especially short and steep defects. The quoted magnetic flux leakage detection method can detect and locate significant longitudinal or circumferentially oriented defects. It should be noted that different testing techniques should be used to detect defects with different orientations. The hydrostatic test can detect defects of a size that allow the test liquid to penetrate the pipe wall. It can be discovered by visual inspection or the pressure drop of the liquid. However, this test cannot detect extremely tight wall-penetrating defects or defects that have penetrated deep into the pipe wall. But when the defect does not completely penetrate the pipe wall. GNEE Group can perform non-destructive testing according to your specific requirements.