Ferritic grades have been developed to provide a group of stainless steel to resist corrosion and oxidation, while being highly resistant to stress corrosion cracking. These steels are magnetic but cannot be hardened or strengthened by heat treatment. They can be cold worked and softened by annealing. As a group, they are more corrosive resistant than the martensitic grades, but generally inferior to the austenitic grades. Like martensitic grades, these are straight chromium steels with no nickel. They are used for decorative trim, sinks, and automotive applications, particularly exhaust systems.

ASTM/ASME A/SA268 Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service.

ASTM/ASME A/SA803 Welded Ferritic Stainless Steel Feed Water Heater Tubes.

EN 10297-2 Seamless circular stainless steel tube for mechanical and general engineering purpose

OD range: 6-219mm(0.2-8.6 inch)

WT range:0.5-25mm(0.02-1 inch)

Length range:1-12 meter(3-40 foot)

Tolerance on hot rolled condition: OD+/-1%, WT+/-10%

Tolerance on cold drawn/rolled condition: OD +/-0.5%, WT+/- 0.15mm

Delivery condition: Harden/Annealed

Surface condition: Acid pickling / polished

ASTM&AISI: 405, 430, 439, 444, 446

EN&DIN: 1.4002, 1.4724, 1.4016, 1.4510 1.521, 1.4742, 1.4762

EN&DIN: X6CrAl13, X10CrAlSi13, X6Cr17,X3CrTi17,X2CrMoTi18-2,X10CrAlSi18,X10CrAlSi25

JIS: SUS405,SUS430

Steel Pipe are marked in indelible ink, the details being repeated along the entire length of each tube and on a label, as follows:

Manufacturer’s trademark – manufacturing standard – dimensions -steel grade – supply condition – cast no. – item number.

Seamless Steel Pipe Process: Round bar→punched→grinded surface→annealed→grinded surface→acid pickling→cold rolled→annealed→Acid pickling or polished→cutting length→package

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.