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ASTM A271 / ASME SA271 / Seamless Austenitic Chromium Nickel Steel Still Tubes supplier & distributor in India

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ASTM A271-88 / ASME A271

SEAMLESS AUSTENITIC CHROMIUM NICKEL STEEL TUBES FOR REFINERY SERICE 

(ASTM A 271 - 88 / ASME A 271 /ASTMA271-88/ASMEA271)

This standard is issued under the fixed designation A 271; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval. 

1.Scope 


1.1 This specification covers grades of minimum-wall-thickness, seamless, hot-finished and cold-finished, austenitic chromium-nickel steel sill tubes as designated in Table 1 for use in carrying fluids at elevated temperatures and pressures in various types of heaters, in which the tubes may be subjected to a furnace temperature higher than that of the contained fluids.

1.2 The specification covers tubes 2 to 9 in., (50.8 to 228.6 mm) inclusive, in outside diameter and over 0.220 in. (5.59 mm) in minimum wall thickness.

1.3 Grades TP304H, TP321H, TP347H, and TP316H are modifications of Grades TP304, TP321, TP347 and TP316, and are intended for high-temperature service.

1.4 Where butt welding is used to obtain lengths longer than single lengths normally produced on the mill, Specification A 422, shall cover the requirements for butt welds.

1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 Optional supplementary requirements are provided, and when desired, shall be o stated in the order. 

ASTM
STANDARD		 UNS NO. KOREA/
JAPANES		 GERMAN BRITISH ELGIAN FRENCH ITALIAN
KS/JIS Symbol KS/JIS Numbe DIN Type DIN Number Materiral Number Remarks B.S Number B.S Grade NBN Type NBN Grade AFNOR Type NF Number Ramarks UNI Type UNI Number Ramarks
A 271 Seamless Austenitic Cr-Ni Steel Still Tubes for Refinery Service
TP 304 S30400 STS 304TF / SUS 304TF D3587 / G3467 X5CrNi 18 9 17440 1.4301 (3b) 3605 304S18 Z6 CN 18.09 A35-573 (3b) X5 CrNi 18 10 6904 Dalmine 913(3b)
TP 304H S30409 STS 304HTF / SUS 304HTF D3587 / G3467 X6 CrNi 18 11 1.4948 WBL-640(3b) 3605 304S59 Z6 CN 19-10 A49-214 X8 CrNi 19 10 6904 (3b)
TP 346 S31600 STS 316 TF/ SUS 316TF D3587 / G3467 X5 CrNiMO 18 10 17440 1.4401 (3b) 3605 316S18 X6 CrNi Mo17.12.2 911 Z6CND17-11 A35-573 (3b) X5 CrNiMo 17 12 6904 (3b)
TP 321 S32100 STS 321TF / SUS 321TF D3587 / G3467 X10 CrNiTi 18 9 17440 1.4541 (3b) 3605 321S18 X6CrNi Ti 18 10 911 Z6CNT18.10 A35-573 (3b) X6 CrNiTi 18 11 6904 (3b)
TP 347 S34700 STS 347TF / SUS 347TF D3587 / G3467 X5 CrNiNb 18 10 17440 1.4550 (3b) 3605 347S18 X6 CrNi Nb 18 10 911 Z6 CNNb 18.11 A32-573 (3b) X6 CrNiNb 18 11 6904 Dalmine 991(3b)
TP 347H S34709 STS 347HTF / SUS 347HTF D3587 / G3467 X8 CrNiNb 16 13 1.4961 WBL-670(3b) 3605 347S59 (3) X8 CrNiNb 18 11 6904 (3b)


JIS Number and Corrensponding Foreign Standards

JIS ASTM NF ISO
Standard Number   Grade   type   Standard Number   Grade   type     Standard Number   Grade   type   Standard Number   Grade   Type  
G3467 STF 2604/2 TS9H C
(STF42) C
STFA12 Mo A161 T1 Mo
STFA22 CrMo
STFA23 CrMo A200 T11 CrMo
STFA24 CrMo A200 T22 CrMo
STFA25 CrMo A200 T5 CrMo 2604/2 TS37 CrMo
STFA26 CrMo A200 Tp CrMo
SUS A271 TP304 SUS 2604/2 TS47 SUS
304FT SUS
SUS A271 TP304H SUS A49-218 TUZ6CN 18.09 2604/2 TS48 SUS
304HTF
SUS SUS
309SFT SUS
SUS SUS 2604/2 TS68 SUS
310STF SUS
SUS A271 TP316 SUS A49-218 TUZ6CND 17.11 2604/2 TS61 SUS
316TF SUS
SUS A271 TP316H SUS 2604/2 TS63 SUS
316HTF SUS
SUS A271 TP321 SUS 2604/2 TS53 SUS
321TF SUS
SUS A271 TP321H SUS A49-218 TUZ6CNT 18.10 SUS
321HTF SUS
SUS A271 TP347 SUS A49-218 TUZ6CNNb 18.10 SUS 2604/2 TS50 SUS
347TF SUS
SUS A271 TP347H SUS
347HTF SUS
NCF8000TF NiCr
NCF8000HTF NiCr

 

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