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Stainless steel welded pipe
stainless steel pipe seamless
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Stainless steel welded pipe

Stainless steel welded pipe, abbreviated as welded pipe, is commonly used as a steel pipe made by welding steel or steel strip after being rolled and formed by the machine and mold. The production process of welded steel pipes is simple, with high production efficiency, multiple varieties and specifications, and less equipment investment, but generally lower strength than seamless steel pipes.

Product Details

Stainless steel welded pipe

321 stainless steel welded pipe is made of steel plate or strip after bending and forming, and then made by welding. According to the form of welding seam, it is divided into straight seam welded pipe and spiral welded pipe. It is made of various stainless steel hot-rolled, cold-rolled stainless steel pipe, widely used in petroleum, chemical equipment pipelines and various uses of stainless steel structural parts, in addition to the chemical composition and mechanical properties should be guaranteed, where the steel pipe used to withstand fluid pressure to ensure that the hydrostatic test qualified. A variety of special steel pipe to ensure the conditions as specified.

321 stainless steel welded pipe is mainly used to manufacture high pressure and above pressure steam boiler pipeline with high quality carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipe, these boiler tubes by the party in high temperature and high pressure work, the tube in the role of high-temperature flue gas and water vapor will also be oxidation and corrosion, so the steel pipe is required to have a high lasting strength, high oxidation resistance, and has good organizational stability.

Product Introduction of Stainless steel welded pipe


Stainless Steel Pipe / Tube

Steel Grade

201, 202, 301, 302, 303, 304, 304L, 304H, 309, 309S, 310S, 316, 316L, 317L, 321,
409L, 410, 410S, 420, 420J1, 420J2, 430, 444, 441,
904L, 2205, 2507, 2101, 2520, 2304, 254SMO, 253MA, F55


ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456, DIN17457,DIN 17459,JIS G3459,JIS G3463,GOST9941,EN10216, BS3605,GB13296


Polishing, Annealing, Pickling, Bright, Hairline, Mirror, Matte


Hot rolled , Cold rolled

stainless steel round pipe/tube


Wall thickness


Outer diameter

6mm-2500mm (3/8"-100")

stainless steel square pipe/tube


Wall thickness


Outer diameter


stainless steel rectangular pipe/tube


Wall thickness


Outer diameter

6mm-2500mm (3/8"-100")


4000mm,5800mm,6000mm,12000mm,or as required.

Trade terms

Price terms


Payment terms

T/T, L/C, Western union, Paypal, DP, DA

Delivery time

Prompt delivery or as the order quantity.

Export to

Ireland,Singapore,Indonesia,Ukraine,Saudi Arabia,Spain,Canada,USA, Brazil,Thailand,Korea,Italy,India,Egypt,Oman,Malaysia,Kuwait,Canada, Viet Nam, Peru,Mexico,Dubai, Russia,etc


Standard export seaworthy package,or as required. 


Widely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,paper making,shipbuilding,boiler fields.
Pipes also can be made according to the customer's required.


If you have any questions,please feel free to contact me.

Container size

20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)   24-26CBM
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)   54CBM
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)    68CBM

chemical composition of Stainless steel welded pipe

Chemical Material Composition of SS 304 seamless pipes
Grade Mn C P Si Cr S Ni Mo N
Stainless Steel 304 Seamless Pipe minimum 18 8
maximum 2 0.08 0.045 0.75 20 0.03 10.5 0.1

mechanical property of Stainless steel welded pipe

Grade Strength of Yield 0.2% Proof (MPa) minimum Elongation (% in 50mm) minimum Strength of Tensile (MPa) minimum Pipes Hardness
Brinell (HB) maximum Rockwell B (HR B) maximum
Stainless Steel 304 Seamless Pipe 205 40 515 201 92
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Why choose us

Behind the growth and success ofuaima Steel is years of hard work and dedication in the steel industry and meeting customers' needs on time. Advanced technology, standard products, certified quality standards and the best customer service make l is years of hard work and dedication in the steel industry and meeting customers' needs on time. Advanced technology, standard products, certified quality standards and the best customer service make Kuaima Steel a true leader in zhe global marker

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lndustries Served

Every industry has its unique set of material specifications and needs. That’s why you can count on the exceptional experience and industry knowledge of the professionals at Kuaima Steel - Meeting the Exact Needs of Every Industry That Uses steel.

  • Machinery manufac- turing industry
  • Power Generation
  • Oil & Gas
  • Manufacturing
  • Construction
  • Ship Building
  • Automobile manufacturing
  • Pipe Fabrication

Our main export country

We are a well known worldwide exporter of 321 seamless pipes, Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Italy, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Philippines, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, China, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.

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