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Heat Resistant Stainless Steel Pipe Seamless Pipe Alloy 310S / 2520 / 1.4845 / TP310S Pipes
Products Specification
Standard | ASTM A213, ASTM A269, ASME SA213, ASME SA269 |
Pipe Type | Bright Annealed Stainless Steel Tubing |
Grades | 304, 304L, 316, 316L, 321, 310S, 2205, 2507 |
Dimensions | Outer Diameter (OD): 1.00 mm to 76.2 mm |
Wall Thickness | 0.2 mm to 6.0 mm |
Length | Up to 12 meters (custom lengths available upon request) |
Manufacturing Process | Cold Drawn, Bright Annealed, Seamless |
Material Surface Finish | Bright Annealed (BA), Mirror Polished, No. 4 Finish |
End Type | Plain End (PE), Beveled End (BE), Threaded End (TE) |
Certifications | ISO 9001, EN 10204 3.1 / 3.2, PED, ASME |
Bright annealing tube under a reducing atmosphere or in a vacuum protection, after high temperature solid melting and rapid cooling to get the stainless steel tube, requiring the inner surface has a very good surface roughness and cleanliness, is a comprehensive consideration of organizational stability corrosion resistance and workability of the pipe.
Bright annealed tube inner surface roughness Ra values and their own cleanliness is extremely demanding, so the particles can occur during transport and accumulation of fluid retention has been effectively curbed. In addition, the chemical composition of the pipe and the base material dimensional tolerances need to be strictly controlled to ensure the weldability of steel and the welding quality in the welding fumes, which can reduce the occurrence of particle generation and improving the corrosion resistance of welded parts, and smoothness.
Bright annealed stainless steel welded pipe is widely used in making military products, semiconductor, biological medicine, precision instruments and meters, hydraulic parts and many other industrial products.
Bright annealing is an annealing process performed in a vacuum or a controlled atmosphere containing inert gases (such as hydrogen). This controlled atmosphere reduces the surface oxidation to a minimum which results in a brighter surface and a much thinner oxide layer. Pickling is not needed after bright annealing since the oxidation is minimal. Since there is no pickling, the surface is much smoother which results in better resistance to pitting corrosion.
The material of the stainless steel round bar is from Jiuli and Baosteel China, we control the quality from the very start. We polished three times to make sure the surface is perfect bright and smooth, and without any deficiency in quality.
The Bright Annealing Tube System can either be placed standalone or in-line with surface reduction equipment to create a total in-line process. Innovative design allows for easy changeover from product to product, and each system is equipped with automatic power control and precision temperature control through recipe parameters.
Bright annealing (BA) refers to stainless steel material is heated in closed furnace in reducing atmosphere of inert gases, common Hydrogen gas, after fast annealing, rapid cooling, stainless steel has a protective layer on the outer surface, no reflect in open air environment, this layer can resist corrosion attack. In general, material surface is more smooth and brighter.
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
---|---|---|---|---|---|---|---|---|---|---|
310 | min. | – | – | – | – | 24.0 | 0.10 | 19.0 | – | |
max. | 0.015 | 2.0 | 0.15 | 0.020 | 0.015 | 26.0 | 21.0 | – | ||
310S | min. | – | – | – | – | – | 24.0 | 0.75 | 19.0 | – |
max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 26.0 | 22.0 | – |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
---|---|---|---|---|---|
Rockwell B (HR B) max | Brinell (HB) max | ||||
310 | 515 | 205 | 40 | 95 | 217 |
310S | 515 | 205 | 40 | 95 | 217 |
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | GOST | ||
---|---|---|---|---|---|---|---|---|
BS | En | No | Name | |||||
310 | S31000 | 304S31 | 58E | 1.4841 | X5CrNi18-10 | 2332 | SUS 310 | 20Ch25N20S2 |
310S | S31008 | 304S31 | 58E | 1.4845 | X5CrNi18-10 | 2332 | SUS 310S | 20Ch23N18 |
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