321 Stainless steel pipe/tube
321 stainless steel is a kind of material with excellent Stress Rupture property and Creep Resistance of high temperature Stress mechanical property, which are better than 304 stainless steel.
Austenitic stainless steel equivalent to domestic grade 0Cr18Ni10Ti 321 stainless steel is Ni-Cr-Mo type austenitic stainless steel, its performance is very similar to 304, but due to the addition of titanium, so that it has a better resistance to grain boundary corrosion and high temperature strength.
Due to the addition of titanium, the formation of chromium carbide is effectively controlled.
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321 stainless steel is a kind of material with excellent Stress Rupture property and Creep Resistance of high temperature Stress mechanical property, which are better than 304 stainless steel.

Austenitic stainless steel equivalent to domestic grade 0Cr18Ni10Ti 321 stainless steel is Ni-Cr-Mo type austenitic stainless steel, its performance is very similar to 304, but due to the addition of titanium, so that it has a better resistance to grain boundary corrosion and high temperature strength.

Due to the addition of titanium, the formation of chromium carbide is effectively controlled.


Product Parameters


Product NameStainless Steel Pipe/Tube
TypeSeamless and welding pipe/tube
ShapeRound pipe, Square pipe, Rectangular pipe
Outside Diameter6mm-630mm(seamless pipe)    
9.5mm-1200mm(welding pipe)     
or as customer's requirement
Wall Thickness2.5mm-30mm(seamless pipe)   
20.5mm-20mm(welding pipe)    
or as customer's requirement
Length6M & as customer's requirement
Material200/300/400/900 series,duplex
201, 202, 203, 204, 301, 304, 304L, 314, 316, 316L, 310S 309S, 409, 410, 420, 430, 631, 904L,etc
StandardJIS/SUS/GB/DIN/ASTM/AISI/En
SurfacePickling/Polished/Satin/Hairline/Mirror Finish


Chemical Properties of Frequently-used 


UNSASTMENJISC%Mn%P%S%Si%Cr%Ni%Mo%
S201002011.4372SUS201≤0.155.5-7.5≤0.06≤0.03≤1.0016.0-18.03.5-5.5-
S202002021.4373SUS202≤0.157.5-10.0≤0.06≤0.03≤1.0017.0-19.04.0-6.0-
S301003011.4319SUS301≤0.15≤2.00≤0.045≤0.03≤1.0016.0-18.06.0-8.0-
S304003041.4301SUS304≤0.08≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-10.5-
S30403304L1.4306SUS304L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-12.0-
S30908309S1.4833SUS309S≤0.08≤2.00≤0.045≤0.03≤0.7522.0-24.012.0-15.0-
S31008310S1.4845SUS310S≤0.08≤2.00≤0.045≤0.03≤1.5024.0-26.019.0-22.0-
S316003161.4401SUS316≤0.08≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31603316L1.4404SUS316L≤0.03≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31703317L1.4438SUS317L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.011.0-15.03.0-4.0
S321003211.4541SUS321≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-12.0-
S347003471.455SUS347≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-13.0-
S405004051.4002SUS405≤0.08≤1.00≤0.04≤0.03≤1.0011.5-14.5≤0.60-
S409004091.4512SUS409≤0.08≤1.00≤0.045≤0.03≤1.0010.5-11.75≤0.50-
S430004301.4016SUS430≤0.12≤1.00≤0.040≤0.03≤0.7516.0-18.0≤0.60-
S434004341.4113SUS434≤0.12≤1.00≤0.040≤0.03≤1.0016.0-18.0--
S444004441.4521SUS444L≤0.025≤1.00≤0.045≤0.03≤1.0017.5-19.5≤1.00-
S40300403-SUS403≤0.155.5-7.5≤0.04≤0.03≤0.5011.5-13.0≤0.60-
S4100004101.40006SUS410≤0.15≤1.00≤0.035≤0.03≤1.0011.5-13.5≤0.60≤1.00
S420004201.4021SUS420J10.16~0.25≤1.00≤0.04≤0.03≤1.0012.0-14.0≤0.75≤1.00
S440A440A1.4028SUS440A0.60~0.75≤1.00≤0.04≤0.03≤1.0016.0-18.0-≤0.75
S32750SAD25071.441
≤0.03≤1.2≤0.035≤0.02≤0.8024.0-26.06.0-8.03.0-5.0
S31803SAF22051.4462
≤0.03≤2.0≤0.03≤0.02≤1.0021.0-23.04.0-6.52.5-3.5
N08904904L1.4539
≤0.0.3≤2.0≤0.035≤0.03≤1.0018.0-20.023.0-25.03.0-4.0





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A: Mill test certification is supplied with shipment, third party inspection is available. And we also get ISO, SGS, Alibaba Verified.

Q: How many coutries you already exported ?
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A: You can contact me on WhatsApp, call me, or send us an email online form to let us know your product specifications.

Q: What is your MOQ?
A: Usually 15 tons, but adjustments will also be made based on the product or your needs, as well as the actual inventory situation.

Q: How long is your delivery time?
A: The products will be delivered ASAP on the basis of the quality assurance. Generally, samples order's delivery time is 5-10 days. Container orders are about 15-20 days.

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A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other metal materials companies.

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