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Comparing with SS304 Tube, SS316 Tube has better characteristics of anti-corrosion, widely applied in oil&gas industry, petro-chmical, pharmaceutical,food, CNC machining and other industrial pipe.
Facilities in coastal areas and production equipment used in seawater also need to use 316L material due to the high salt content in the operating environment. In addition, it is widely used in chemistry, construction, bridges, aerospace, mechanical hardware, medical treatment, decoration, medical fitness supplies, furniture, tableware manufacturing, liquid transportation, automobile manufacturing, water supply, solar energy, machinery manufacturing, nuclear power, architectural decoration, rail transit , Sanitary ware, metal products, containers and other industries.
Chemical Composition
C | Si | Mn | P | S | Cr | Ni | Mo | N |
≤0.08 | ≤0.75 | ≤2.00 | ≤0.035 | ≤0.03 | 16~18 | 10~14 | 2~3 | 0.1 |
Fabrication
Round tube bar → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → tube removal → sizing (or reducing) → cooling → blank tube → straightening → hydraulic test (or flaw detection) → marking → storage . Cold drawn (rolled) seamless steel pipe: round tube billet→heating→piercing→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling)→blank tube→heat treatment→straightening→ Hydro test (flaw detection) → marking → put in stock warehouse ready to be delivered.
Mechanical Test
Corrosion Test | Conducted only between specially requested by the client |
Chemical Analysis | Test done as per required quality standardds |
Bending | Bending or repeated bending |
Stretching Test | proceed under high temperature, normal temperature and low temperature |
Hardness Test | Rockwell Hardness Test, Brinell Hardness Test, Vickers Hardness Test |
Impact Test | Room Temperature impact test, Low Temperature impact test, high temperature impact test |
Impact Test | Room Temperature impact test, Low Temperature impact test, high temperature impact test |
Compression Test | Compression Yield Point, Compressive Strength, Specified non-proportional compressive stress, specified total compressive stress, etc |
Eddy Current Test | Done to detect homogeneities in subsurface by using digital flaw-mark testing system |
Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s |
Visual Inspection | After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws and other imperfections. |
Different grade of stainless steel tube
Austenitic stainless steel | TP304, TP304L, TP304H, TP316, TP316H, TP316Ti, TP316L, TP321, TP321H, TP347H, TP347HFG, 904L, TP310H, TP310S, TP317, TP317L, TP316LMo≥2.5, etc |
Duplex Steel, Super Duplex Steel | S31803, S32205, S31500, S32750 |
Nickel Alloy | N08825, N08904, N08028, N08800 |
Standard
China | GB/T14975-2002, GB/T14976-2002, GB/T13296-91 |
American Standard | ASTM A312/A312M, ASTM A213/213A, ASTM A269/269M |
German Standard | DIN2462 |
Japan Standard | JIS G3463 |
Material
301 (1Cr17Ni7)
304 (0Cr18Ni9)、SS304、TP304
304L(00Cr19Ni10)、SS304L、TP304L
316(0Cr17Ni12Mo2)、SS316、 TP316
316L(0Cr17Ni14Mo2)、SS316L、TP316L
321(1Cr18Ni9Ti)、SS321、TP321
310S(0Cr25Ni20)、SS310S、TP310S
Heat Exchanger Tube
Main Grade | Production Standard | Specifications |
TP304, TP304H, TP316, TP316L, TP321 | ASTM A213, ASME SA213, GB13296, JIS3463. DIN17458, EN10216-5 | OD: 12.7~159mm Wall thickness: 0.5~8mm |
Boiler Tube
Main Grade | Production Standard | Specifications |
TP304, TP310H, TP316H, TP321H, TP347H, TP347HFG | GB5310, GB13296. ASTM A213, ASME SA213, EN10216-5 | OD: 33~273mm Wall thickness: 2~20mm |
Duplex Stainless Steel Tubes/ Super Duplex Stainless Steel Pipes
Main Grade | Production Standard | Specifications |
S31803, S32205, S31500, S32750 | ASTM A789 | OD: 12-219mm, Tube Wall thick: 0.5~14mm |
ASTM A790 | OD: 10~273mm, Tube Wall thick: 1.65~20mm |
Nickel Alloy Tube
Main Grade | Production Standard | Specifications |
N08825, N08904, N08028, N08800 | ASME SB163, ASTM B163, ASME SB423, ASTM B423, ASME SB407, ASTM B407, ASME SB668, ASTM B668 | OD: 16-273mm Tube Wall Thickness: 1.65~20mm |
chemical industry, pharmaceutical machinery, aerospace, nuclear power, shipbuilding, high pressure boiler, heat exchanger, pressure vessel, condenser, water conservancy, electric industry and other industries.
As a one-stop engineering supporting supplier integrating stainless steel seamless pipes, stainless steel welded pipes, and stainless steel pipe fittings. We have more than 5,000 tons of stock in stock. We mainly produce: austenitic stainless steel, duplex stainless steel, super stainless steel and other series of stainless steel pipes and fittings. There are a total of 24 cold drawing machines of various types, including 8 double-line long-stroke cold rolling pipe machines, 2 inclined bottom heating furnaces, and an industry-caliber stainless steel pipe production line. The company has an annual output of 30,000 tons of 304 stainless steel pipes, which can produce 6*1 to 630*25 caliber stainless steel seamless pipe and 2 meter caliber stainless steel welded pipe.
We have a complete set of inspection and testing equipment imported from Germany, such as direct reading spectrometer, ultrasonic flaw detector, eddy current flaw detector, hydraulic testing machine, X-ray perspective instrument, impact testing machine, automatic carbon and sulfur analyzer, and endoscope. Products are widely used in petroleum, chemical, chemical, machinery, shipbuilding, electric power, medicine, food, paper and other fields.
GB3087-1999 | Seamless steel tubes for low and medium pressure boilers |
GB5310-1995 | Seamless steel tubes for high pressure boilers |
GB13296-2007 | Seamless steel tube for boiler and heat exchangers |
ASME A213 | Seamless ferritic and austenitic alloy steel pipes for boilers, super heaters and heat exchangers |
