Stainless steel tube is a hollow long strip steel made of stainless-steel material. Because of its excellent corrosion resistance, it is mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial transportation pipelines and mechanical structural components. In addition, when the bending and torsion strength are the same, the weight is light, so it is also widely used in manufacturing mechanical parts and engineering structures, but also commonly used in the field of furniture decoration.
Stainless steel pipe is divided into seamless pipe and welding pipe according to the production mode, seamless steel pipe can be divided into hot rolling pipe, cold rolling pipe, cold pulling pipe and extrusion pipe, etc., cold pulling and cold rolling is the secondary processing of steel pipe; welding pipe is divided into straight welding pipe and spiral welding pipe.
Stainless steel pipes can be divided into round tubes and different tubes according to the cross-sectional shape. The form tubes have rectangular tubes, rhomboid tubes, ellipse tubes, hexagonal tubes, octagonal tubes and various cross-sectional asymmetric tubes.
It can be divided into Austenitic Stainless Steel Tube Ferritic Stainless Steel Tube Martensitic Stainless Steel Tube and Duplex Stainless Steel Tube by the type of stainless steel.
20' container load 25tons goods whose length is under 5.8m
40' container load 25tons goods whose length is under11.8m
2. TYPICAL APPLICATIONS:
Chemical equipment and piping, heat exchanger components, dairy and food handling equipment and utensils, cryogenic vessels and components, architectural and structural applications exposed to non-marine atmospheres
Type Yield Strength 0.2% offset (KSI) Tensile Strength (KSI) % Elongation(2�³ Gauge length) Hardness Rockwell
304 Ann 30 min. 75 min. 40% min. HRB 92 max.
304 Hard 75 min. 125 min. 12% min. 25 -32 HRC (typical)
304 Hard 110 min. 150 min. 7% min. 32 -37 HRC (typical)
304 Hard 25 min. 70 min. 40% min. HRB 92 max.
304L Hard 75 min. 125 min. 12% min. 25-32 HRC (typical)
304L Hard 110min 150 min 6% min 32 -37 HRC (typical)
5. PROCESSING:
Types 304 and 304L cannot be hardened by thermal treatment. Annealing: Heat to 1850o F to 2050 o F and cool at sufficiently high rates through 1500oF to 800oF to avoid precipitation of chromium carbides. Stress Relief Annealing: Cold worked parts should be stress relieved at 750oF for ½ to 2 hours.