DIN1629 Steel Seamless Pipe

DIN1629 Steel Seamless Pipe are manufactured of metal in-house produced and smelted in the electric furnace,treated with synthetic slags and cast by continuous casters.The applied steel making process ensures the achievement of chemically pure steel with reference to sulphur and phosphor contents providing high tensile,ductility and corrosion resistance properties of pipes to be operated at low temperatures in various corrosion media.
Rolling using a press piercing mill and continuous mill equipped with a fixed mandrel allows strict measurement tolerances to be obtained and ensures a lack of pipe body and surface defects.
In order to achieve high tensile and ductility steel as well as its required structure,providing a high corrosion resistance in various corrosion media,pipes are heat treated in a computerized walking beam furnace.70% of oil line pipes are subject to heat treatment.
Steel Seamless Pipe are inspected for internal and external flows by automatic non-distructive testing of ultrasonic and electromagnetic inspection.Pipe ends inspection after beveling is done by magnetic-fluoroscopic flaw detection.
Description:
Sizes (O.D. x W.T):from 13.7mm — 965mm x 1.5mm to 50mm
Standard:DIN1629,DIN17175
Steel Grade:St37,St44,St45,St52

DIN 1629 steel seamless pipe Mechanical Property &Chemical Components
Material Tensile strength (MPa) Yield strength (MPa) Elongation (%)
St37.0 350~480 ≥235 ≥25
St44.0 420~550 ≥255 ≥21
St52.0 500~650 ≥270 ≥21

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