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304 stainless steel welded pipe

Stainless steel welded pipe, referred to as welded pipe for short, is a steel pipe made of commonly used steel or steel strip after crimping and forming by the unit and die. Welded steel pipe has the advantages of simple production process, high production efficiency, many varieties and specifications and less equipment investment, but its general strength is lower than that of seamless steel pipe. Since the 1930s, with the rapid development of high-quality strip continuous rolling production and the progress of welding and inspection technology, the weld quality has been continuously improved, the varieties and specifications of welded steel pipes have been increasing, and seamless steel pipes have been replaced in more and more fields, especially in heat exchange equipment pipes, decorative pipes, medium and low pressure fluid pipes, etc.

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Material & Standard

GB / t12770-2002 (stainless steel welded steel pipe for mechanical structure). It is mainly used for machinery, automobile, bicycle, furniture, hotel and restaurant decoration and other mechanical parts and structural parts. The representative materials are 0Cr13, 1Cr17, 00cr19ni11, 1Cr18Ni9, 0cr18ni11nb, etc. GB / t12771-2008 (stainless steel welded steel pipe for fluid transportation). It is mainly used to transport low-pressure corrosive media. The representative materials are 06cr19ni10, 022cr19ni10, 06cr19ni110ti, 00Cr17, 0cr18ni11nb, 06cr17ni12mo2, etc.

Product introduction

304 stainless steel is a common material in stainless steel, with a density of 7.93 g / cm ³, It is also called 18 / 8 stainless steel in the industry. High temperature resistance of 800 ℃, with the characteristics of good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.

Common marking methods in the market include 06cr19ni10 and SUS304, of which 06cr19ni10 generally refers to national standard production, 304 generally refers to ASTM standard production, and SUS 304 refers to Japanese standard production.

304 is a universal stainless steel, which is widely used to make equipment and parts requiring good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a brand of stainless steel produced according to American ASTM standards.

For 304 stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance and value of 304 stainless steel.


number

Standard / s30400

C

Mn

P

S

Si

Cr

Ni

N

1

ASTM A276/A276M-15

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



2

ASTM A959-11

zero point zero seven

two

zero point zero four five

zero point zero three zero

one

17.5-19.5

8.0-11.0



3

ASTM A240/A240M-15a

zero point zero seven

two

zero point zero four five

zero point zero three zero

zero point seven five

17.5-19.5

8.0-10.5



4

ASTM A182/A182M-15

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0

zero point one zero


5

ASTM A193/A193M-15

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



6

ASTM A269/A269M-15

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



7

ASTM A312/A312M-15a

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



8

ASTM A320/A320M-15a

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



9

ASTM A403/A403M-15

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



ten

ASTM A493-09(2013)

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-10.5

zero point one zero

one

eleven

ASTM A554-15a (MT-304)

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0



twelve

JIS G4303:2012

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-10.5



thirteen

JIS G4304:2012

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-10.5



fourteen

JIS G4305:2012

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-10.5



fifteen

GB/T 20878-2007

zero point zero eight

two

zero point zero four five

zero point zero three zero

one

18.0-20.0

8.0-11.0





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