S30403/304 stainless steel is the most widely used stainless steel, containing 18-20% Cr and 8-10.5%Ni, and also known as 18-8 stainless steel.SS 304 is non-magnetic under annealingconditions, but after cold working (such as stamping,stretching, bending, rolling),. part of theaustenite structure may be converted into martensite and therefore weakly magnetic. TypeSS304 has good resistance to atmospheric corrosion and oxidation.The high nickel-chromium alloy content allows it excellent corrosion resistance and is widely used in the food industry as a standard food grade stainless steel.
Grade 304,304L material could be shaped as coils,plates or sheets,strips,wires,profiles,bars,pipes or tubes,angles,and others as specially required customization.
| Product Name | Stainless Steel Seamless Pipe |
| Material | 200 series:201,202 |
| 300 series:304,304L,321,316,316L,316Ti, 347H,309S,310S |
| 400 series: 410,420,430,440 |
| 900 series: 904,904L |
| Duplex 2205,2507 |
| Special:2507,316Ti,316LN,347H.317L,310S,253MA,RA330,725LN,724L etc. |
| Standard | AISI,ASTM,BS,DIN,EN,GB,ISO,JIS etc. |
| Size | 10*1-2,12*1-3..202-5,222-630"2.5-8,32"2.5-8..40*3-12,42*3-12...All the way to 508*8-85,53018-85..610*8-90,630*8-90...820*10-95mm Please inform us of other specifications in detail. |
| Length | No Fixed Length |
| Tolerance | According to Standard |
| Surface | NO.1,2D,2B,NO.4,HL，BA,8Ketc. |
| Applications | Heat Exchanger,Ferilization,Chemical and Petrochemical,Power Generation and Environmental Technologies,Ship-building.Pipeline for Petroleum,Water,Gas and other common Fluid,Mechanical and Plant Engineering and Construction, Automotive,Pipeline for High Temperature and Pressure Service |
| Quality Management | ISO9001,CE,Third Party Testing / Inspection,Certifications Applied for Buyers' Countries |
| Samples | Kindly Discuss with Sales Assistant |
| Lead Time | Depends on Specifications,Quantity etc. |
| Package | Standard Seaworthy Package or as Required |
| Price Term | CIF CFRFOBEx-WORK |
| Payment Method | T/T, LC etc. |
Chemical composition：
| 304 | C | Mn | P | S | Si | Cr | Ni | N |
| Requirements% | ≤0.07 | ≤2.00 | ≤0.045 | ≤0.030 | ≤0.75 | 17.5–19.5 | 8.0–10.5 | ≤0.10 |
Corresponding table of product brand：
| DIN | EN | ASTMAISl | UNS | GB |
| 1.431 | x10CrNi18-8 | 301 |
|
|
| 1.4318 | X2CNiN18-7 | 301LN |
|
|
| 1.4307 | x2CNi18-9 | 304L | S30403 |
|
| 1.4306 | x2CINi19-11 | 304L | S30403 | 0OCr18Ni9 |
| 1.4311 | x2CrNiN18-10 | 304LN | S30453 |
|
| 1.4301 | X5CrNi18-10 | 304 | S30400 | 06Cr19Ni10(GB/T3280-2007) |
| 1.4948 | X6CrN18-11 | 304H | S30409 |
|
| 1.4303 | x5CrNi18-12 | 305 |
|
|
| 1.4541 | x6CrNiT18-10 | 321 | S32100 | 0Cr18Ni11Ti |
| 1.4878 | x12CrNiTi18-9 | 321H | S32109 |
|
| 1.4404 | x2CrNiMo17-12-2 | 316L | S31603 | 00Cr17Ni14Mo2 |
| 1.4432 | x2CrNiMo17-12-3 | 316L | S31603 | 00Cr17Ni14Mo2 |
| 1.4435 | x2CrNiMo18-14-3 | 316L | S31603 | 00Cr17Ni14Mo2 |
| 1.4401 | X5CrNiMo17-12-2 | 316 | S31600 | 0Cr17Ni12Mo2 |
| 1.4436 | x3CrNiMo17-13-3 | 316 | S31600 | 0Cr17Ni12Mo2 |
| 1.4406 | x2CtNiMoN17-12-2 | 316LN | S31653 |
|
| 1.4571 | x6CrNiMoTi17-12-2 | 316Ti | S31635 |
|
| 1.4429 | x2CrNiMoN17-13-3 | 316LN | S31653 |
|
| 1.4438 | ×2CrNiMo18-15-4 | 317L | S31703 |
|
| x10CrNiTi18-9 | 347 |
| 0Cr18Ni11Nb |
| 1.4512 | x6CrTi12 | 409 |
| 0Cr11Ti |
|
|
| SS41000 | oCr13 |
|
| 410 |
| 1Cr13 |
|
| 4201 |
| 2Cr13 |
| 1.4016 | x6Cr17 | 430 |
| 1Cr17 |
| 1.4118 | x40CrMo15 | 440A | S44002 | 8Cr13 |
| 1.4112 |
| 440B | S44004 | 9Cr13 |
| 1.4125 |
| 440C | S44003 | 11Cr18 |
|
| 440F | S44020 |
|
| 1.4539 | 1NiCrMoCu25-20-5 | 904L | N08904 | 00Cr20Ni25Mo4.5Cu |
| 1.4547 | X1CrNiMoCuN20-18-7 |
| S31254 |
|
Surface classification：
| Surface | Characteristic | Processing Technology |
| N0.1 | Original | Pickled after hot rolling |
| 2D | Blunt | Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling |
| 2B | Blurred | Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + tempering rolling |
| N0.3 | Matte | Polishing and tempering rolling with 100-120 mesh abrasive materials |
| N0.4 | Matte | Polishing and tempering rolling with 150-180 mesh abrasive material |
| NO.240 | Matte | Polishing and tempering rolling with 240 mesh abrasive materials |
| NO.320 | Matte | Polishing and tempering rolling with 320 mesh abrasive materials |
| NO.400 | Matte | Polishing and tempering rolling with 400 mesh abrasive materials |
| HL | Brushed | Grind the surface of the steel belt with an appropriate grinding grain size to make it show a certain longitudinal texture |
| BA | Bright | The surface is annealed and shows high reflectivity |
| 6K | Mirror | Rough grinding and polishing |
| 8K | Mirror | Fine grinding and polishing |
