Rare Earth & Products

Stainless Steel Welded Pipes A312 TP321 / 321H Annealed & Pickled, ASTM A778 - 01(2009)e1,
Standard Specification:


ASTM A249 / A249M - 10a Standard Specification for Welded Austenitic Steel Boiler, Superheater,
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Heat-Exchanger, and Condenser Tubes
ASTM A269 - 10:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing
for General Service
ASTM A312 / A312M - 12:Standard Specification for Seamless, Welded, and Heavily Cold Worked
Austenitic Stainless Steel Pipes
ASTM A358/A358M-08a:Standard Specification for Electric-Fusion-Welded Austenitic
ASTM A778 - 01(2009)e1:Standard Specification for Welded, Unannealed Austenitic Stainless
Steel Tubular Products
ASTM A789 / A789M - 10a:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Tubing for General Service
ASTM A790 / A790M - 11:Standard Specification for Seamless and Welded Ferritic Austenitic Stainless Steel Pipe
Others like BS, JIS , DIN , EN , GOST standard we all can supply .

Material Grade:

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American Standard | Austenitic Steel: TP304,TP304L,TP304H, TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, TP317,TP317L, TP321, TP321H,TP347, TP347H,904L… Duplex Steel : S32101,S32205,S31803,S32304,S32750, S32760 Others: TP405.TP409, TP410, TP430, TP439 ,.. |
Europen Standard | 1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438, 1.4841,1.4845,1.4539,1.4162, 1.4462, 1.4362, 1.4410, 1.4501 |
Russia Standard | 08Х17Т,08Х13,12Х13,12Х17,15Х25Т,04Х18Н10,08Х20Н14С2, 08Х18Н12Б,10Х17Н13М2Т,10Х23Н18,08Х18Н10,08Х18Н10Т, 08Х18Н12Т,08Х17Н15М3Т,12Х18Н10Т,12Х18Н12Т,12Х18Н9, 17Х18Н9, 08Х22Н6Т, 06ХН28МДТ |
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Name | Stainless steel welded pipe/ tube |
Standard | ASTM A554, A312, A249, A269 and A270,A688 |
Material Grade | 201,202,301,304,316,430,304L,316L |
Size Range | 20x10mm--100x50mm,10x10mm-100x100mm, 9.53-101.6mm, we can also accept sizes above 101.6mm |
Thickness | 0.3mm - 3.0mm |
Length | 6m or as customers& acute; request |
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Tolerance | a) Outer Diameter: ?+/- 0.2mm |
b) Thickness: +/- 0.02mm |
c) Length: +/- 5mm |
Surface | 180G, 320G Satin / Hairline(Matt Finish, Brush, Dull Finish)
400G, 600G Mirror finish |
Application | Window,Door,Handrail,Curtain rail,Towel rail,Flagpole,Lamp pole,Sanitary Instrument,Billboard,Decoration,Upholstery,
Construction,Accessory,Airport,Bus Stop |
Test | Squash test, Extended test, Water pressure test, Crystal rot test, Heat treatment, NDT |
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Chemical Composition of Material | ?
Composition
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?? Material | 201 | 202 | 304 | 316L | 430 |
C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.35 | ≤0.12 |
Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 |
Mn | 5.5-7.5 | 7.5-10 | ≤2.00 | ≤2.00 | ≤1.00 |
P | ≤0.06 | ≤0.06 | ≤0.045 | ≤0.045 | ≤0.040 |
S | ≤0.03 | ≤0.03 | ≤0.030 | ≤0.030 | ≤0.030 |
Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 |
Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | 10-14 | ? |
Mo | ? | ? | ? | 2.0-3.0 | ? |
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Mechanical Property | Material Item???? | 201 | 202 | 304 | 316 |
Tensile Strength | ≥535 | ≥520 | ≥520 | ≥520 |
Yield Strength | ≥245 | ≥205 | ≥205 | ≥205 |
Extension | ≥30% | ≥30% | ≥35% | ≥35% |
Hardness (HV) | <105 | <100 | <90 | <90 |
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Final Finishing:

Solution Annealed & Pickled
TOBO GROUP?deal with stainless steel welded pipe and tube already more than 10 years, every
year sell more than 5000 tons of stainless steel pipe and tube. Our client already cover more than 45
countries. Our stainless steel seamless pipe and tube was width used in Mining, Energy, Petrochemical,
Chemical Industry, Food plant, Paper plant, Gas and Fluid Industry etc.



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