Quick Details
Standard:JIS,AISI,ASTM,GB,DIN,EN,GOST
Type:Seamless
Grade:SUS321,12X18H9T,TP321
Size:OD6mm-1024mm WT0.5mm-68mm LENGTH 50mM-12000mm
Application:Petroleum,Chemical Engineering,Fluid Machinery,Irrigation Works,Electric Power,Environmental,Etc
Surface Finish:Brush polish,Hairline,160grit,Mirror,Bright,Etc
Technique:Cold rolling,Cold drawing
Test: Hardness Test,Hydrostatic Test,Ultrasonic Test,Eddy Current Test,Dimensional Checking,Chemical Analysis Etc
Inspection:100%
Price Term:FOB,CFR,CIF or as negotiation
The Difference Between 304 And 321:
304 and 321 are austenitic stainless steels, very similar in appearance and physical properties, with a little difference in chemical composition:
First of all, 321 stainless steel is required to contain trace titanium (Ti) element (according to ASTM A182-2008 standard provisions of the Ti
content should not be less than 5 times of carbon (C) content, but not too much in 0.7%, another note, 304 and 321 carbon (C) content is
0.08%), and 304 does not contain titanium (Ti).Ti can prevent stainless steel sensitization, generally speaking, is to improve the high
temperature service life of stainless steel.
Second, the Ni content is slightly different for 304, which is between 8 and 11 percent, and 321, which is between 9 and 12 percent.
Third, the requirement for chromium (Cr) content is different. 304 is between 18% and 20%, while 321 is between 17% and 19%.
| ASTM Chemical Composition (%,max) |
| Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Ni ≤ | Cr ≤ | Mo | Others |
| 304 | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 8.00-11.00 | 18.00-20.00 | | |
| 304H | 0.04-0.1 | 0.75 | 2 | 0.04 | 0.03 | 8.00-11.00 | 18.00-20.00 | | |
| 304L | 0.035 | 0.75 | 2 | 0.04 | 0.03 | 8.00-13.00 | 18.00-20.00 | | |
| 304N | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 8.00-11.00 | 18.00-20.00 | | N:0.1-0.16 |
| 304LN | 0.035 | 0.75 | 2 | 0.04 | 0.03 | 8.00-11.00 | 18.00-20.00 | | N:0.1-0.16 |
| 309 | 0.15 | 0.75 | 2 | 0.04 | 0.03 | 12.00-15.00 | 22.00-24.00 | | |
| 310 | 0.15 | 0.75 | 2 | 0.04 | 0.03 | 19.00-22.00 | 24.00-26.00 | | |
| 316 | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 11.00-14.00 | 16.00-18.00 | 2.00-3.00 | |
| 316H | 0.04-0.1 | 0.75 | 2 | 0.04 | 0.03 | 11.00-14.00 | 16.00-18.00 | 2.00-3.00 | |
| 316L | 0.035 | 0.75 | 2 | 0.04 | 0.03 | 10.00-15.00 | 16.00-18.00 | 2.00-3.00 | |
| 316N | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 11.00-14.00 | 16.00-18.00 | 2.00-3.00 | N:0.1-0.16 |
| 316LN | 0.035 | 0.75 | 2 | 0.04 | 0.03 | 10.00-15.00 | 16.00-18.00 | 2.00-3.00 | N:0.1-0.16 |
| 317 | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 11.00-14.00 | 18.00-20.00 | 3.00-4.00 | |
| 321 | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 9.00-13.00 | 17.00-20.00 | | Ti:5xC%-0.70B |
| 321H | 0.04-0.1 | 0.75 | 2 | 0.04 | 0.03 | 9.00-13.00 | 17.00-20.00 | | Ti:4xC%-0.6 |
| 347 | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 9.00-13.00 | 17.00-20.00 | | Nb+Ta:10xC%-1.00 |
| 347H | 0.04-0.1 | 0.75 | 2 | 0.04 | 0.03 | 9.00-13.00 | 17.00-20.00 | | Nb+Ta:8xC%-1.00 |
| 329 | 0.089 | 0.75 | 2 | 0.04 | 0.03 | 2.50-5.00 | 23.00-28.00 | 1.00-2.00 | |
| 316Ti | 0.08 | 0.75 | 2 | 0.04 | 0.03 | 11.00-14.00 | 16.00-18.00 | 2.00-3.00 | Ti:5xC%-0.75 |
| S31803 | 0.03 | 1.00 | 2 | 0.03 | 0.02 | 4.5-6.5 | 21.00-23.00 | 2.50-3.50 | N:0.08-0.3 |
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
20 feet container load 25tons pipes whose length is under 5.8m
40 feet container load 28tons pipes whose length is under 11.8m
Q1: Wonder if you accept small orders?
A1: Do not worry. Feel free to contact us. In order to get more orders and give our clients more convener ,we accept small order.
Q2: Can you send products to my country?
A2: Sure, we can. If you do not have your own ship forwarder, we can help you.
Q3: Can you do OEM for me?
A3: We accept all OEM orders,just contact us and give me your design.we will offer you a reasonable price and make samples for you ASAP.
Q4: What's your payment terms ?
A4: By T/T,LC AT SIGHT,30% deposit in advance, balance 70% before shipment.
Q5: How long is your production lead time?
A5:It depends on product and order qty. Normally, it takes us 15 days for an order with MOQ qty.
Q6: When can I get the quotation ?
A6: We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.
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Petroleum Cold Rolled 5m 321 Stainless Steel Pipe SUS321 12X18H9T Ss Pipe 316 Grade Images
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