304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm ³;
Also called 18/8 stainless steel, which means that it contains more than 18% chromium and more than 8% nickel;
It is resistant to high temperature of 800 ℃, with good processing performance and high toughness,
It is widely used in industry, furniture decoration industry and food and medical industry. However, it should be noted that the content index of food-grade 304 stainless steel is more strict than that of ordinary 304 stainless steel.
These grades of austenitic stainless steels are the most versatile and widely used stainless steels. They exhibit excellent corrosion resistance to a wide range of corrosive environments. Type 304 and 304L grades of stainless steel pipe exhibit good machinability and have excellent weld-ability characteristics with or without the addition of filler metals.
1. Hot rolled (extruded) seamless steel pipe:
Round tube billet → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → tube removal → sizing (or reducing) → cooling → straightening → hydraulic test (Or non-destructive flaw detection) → mark → warehousing
2.Cold rolled (drawn) seamless steel pipe:
Round tube blank → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → billet tube → heat treatment → straightening →Hydraulic test (flaw detection)→Marking→Warehousing.
Weight % | C | Mn | P | S | Si | Cr | Ni |
---|---|---|---|---|---|---|---|
304 | .08 | 2.00 | .045 | .030 | 1.00 | 18.0-20.0 | 8.0-11.0 |
304L | .035 | 2.00 | .045 | .030 | 1.00 | 18.0-20.0 | 8.0-13.0 |
Grade | Tensile | ||||
---|---|---|---|---|---|
Ultimate/Min | Yield/Min | Elongation/Min | |||
KSI | MPA | KSI | MPA | % | |
304 | 75 | 515 | 30 | 205 | 35 |
304L | 70 | 485 | 25 | 170 | 35 |
Product Name | Stainless Steel Pipe |
Material Origin | Kuaima Steel Co., Ltd. |
Material | 200 series: 201, 202, 202cu, 204 |
300 series: 301, 303, 303, 304, 304L, 316, 316L, 316Ti, 317L, 321, 347 | |
400 series: 409, 409L, 410, 420, 430, 431, 439, 440, 441, 444 | |
Others: 2205, 2507, 2906, 330, 660, 630, 631, 17-4ph, 17-7ph, S318039 | |
Duplex Stainless Steel: S22053, S25073, S22253, S31803, S32205, S32304 | |
Special Stainless Steel: 904L, 347, 347H, 317, 317L, 316Ti, 254Mo | |
Technology | Cold Rolled, Hot Rolled |
Length | 100~12000mm or as Customer's Requriement |
Outer Diameter | 6~711mm or Customized |
Thickness | 0.5~40mm or Customized |
Shape | Round, Square |
Surface | BA, 2B, 2D, 4K, 6K, 8K, NO.4, HL, SB, 1D |
Other Choices | Leveling: Improve Flatness, esp.for Items with High Flatness Request. |
Skin-Pass: Improve Flatness, Higher Brightness. | |
Cutting: Laser Cutting, Help the Customer to Cut the Required Size. | |
Protection | 1. Inter Paper Available |
2. PVC Protecting film available |
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304 stainless steel pipe are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry
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