STEEL PIPES FOR PRESSURE APPLIANCES, CONCEALED ARC WELDED, FOR HIGH TEMPERATURE APPLICATION (STANDARD 10217-5)
Manufacturing and purpose
Round-section welded tubes, submerged arc welded, designed to operate at increased temperatures, made of non-alloy and alloy steel. Welded with a spiral (SAWH) and longitudinal (SAWL) seam. Made of hot-rolled or normalized sheet or strip with cold forming, SAW welding and normalizing or without further heat treatment, forming with normalization, SAW welding without further heat treatment.
Steel grades used
P 235 GH, P 265 GH, 16Mo3
Dimensions
Outside diameter: 406.4 to 2540 mm
Wall thickness to bd. mm
Length: n / a m
Research and requirements
The pipes are tested according to the requirements of the relevant standards. The following tests are carried out: melt analysis, tensile test of the base material at room temperature, weld tensile test at room temperature for D> = 508 mm, weld bend test, hydrostatic leakage test, dimensional control, material identification for 16Mo3 and tests in the scope of the category TC2 - non-destructive testing (NDT) of the basic material for delamination, pipe ends for delamination, sheet edges, strips for delamination.
SEAMED STEEL PIPES FOR PRESSURE SERVICE. CONCEALED ARC WELDED NON-ALLOY STEEL PIPES WITH SPECIFIC PROPERTIES AT A REDUCED TEMPERATURE (STANDARD 10217-6)
Manufacturing and destiny
Round-section welded, submerged arc welded pipes designed to operate at low temperatures, made of unalloyed steel welded with a spiral (SAWH) and longitudinal (SAWL) seam. Made of hot-rolled or normalized sheet or strip with cold forming, SAW welding and normalizing or without further heat treatment, forming with normalization, SAW welding without further heat treatment.
Steel grades used
P 215 NL and P 265 NL
Dimensions
Outside diameter: 406.4 to 2540 mm
Wall thickness: n / a. mm
Length: n / a m
Research and requirements
The pipes are tested according to the requirements of the relevant standards. The following tests are carried out: melt analysis, tensile test of the base material at room temperature, tensile test of the weld at room temperature for D> = 508 mm, impact test of the base material at low temperature, weld bending test, low temperature weld impact test, tightness, dimensional control and tests in the scope of TC2 category - non-destructive testing (NDT) of the basic material for delamination, pipe ends for delamination, sheet edges, strips for delamination.
