420 SUS420 X20Cr13 1.4021 Martensitic Stainless Steel Seamless Pipe
|Categories||Stainless Steel Tube|
|Album||View larger image|
|length range||1-9 meter|
|Surface condition||Acid pickling / polished|
|Terms of Payment||L/C, T/T|
Grade 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420 can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium.
The key applications of grade 420 stainless steels include:
Outside diameter range: 6-219mm
Wall thickness range:0.5-25.4 mm
Delivery condition: Harden
Surface condition: Acid pickling / polished
Seamless Steel Pipe Process: Round bar→punched→grinded surface→annealed→grinded surface→acid pickling→cold rolled→annealed→Acid pickling or polished→cutting length→package
Inspection and Test
Chemical, Tensile test, intergranular corrosion, flat test, expand test, nonmetallic inclusion, hydraulic test.
Tubes will bundled by steel strip and not exceed 3 tons each batch. If thin wall thickness, we will put it into wooden case.