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DOOWON HIGH STEEL
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DUPLEX STEEL PIPE
Model
-
Series
STAINLESS STEEL PIPE
Product Description

"Duplex stainless steels Considerably higher strength and lower thermal expansion compared with austenitic grades. Very high corrosion reststance in chloride-containing solutions and weak organic acids. Used for offshore oil and gas exploration and heat-exchangers. "

TYPE : WELDED & SEAMLESS

GRADE : ASTM A789 S31803
                ASTM A790 S31803


It have used by a related ocean construction require stainless steel grade 304, 316
and supply variety stainless type. Also it is often to use power plant.

A.TP304/L         most commonly used in petroleum refineries, boilers, heat exchangrs, condensers,
                                cooling towers steam exhausts, electric generation plants
B. TP316L, 317L used to handle sulphur, pulp liquor, acid dyestuffs, bleaching solutiong, severe coal
C.TP321            radiant superheaters, boiler tubes, high pressure steam pipes
D.TP310S         best high temperature, environmental-chemical processing, incinerators, furnaces, burners salt pots etc
E. TP347         general refinery piping, heavy duty exhaust systems, manifolds
F. TP904L         pulp and paper industry, chemical process industry.
G. DUPLEX2205 a dual-phase stainless steel whose grain structure is about 45% ferritic and 55% austenitic
H. A516-70         used for gas holders (ball tank)LPG tanks, storage tanks for fuel and othe liquids


Specification and Grade

ASTMJISBSDIN
NOCode
TP304SUS3043059/304S18
3605/304S59
1.4301
1.4300
X5CrNi189
X12CrNi188
TP304LSUS304L3603/304S141.4306X2CrNI189
TP309SUS309S   
TP310SUS310S 1.4845X12CrNi2521
TP316SUS3163059/316S18
3605/316S59
1.4401
1.4436
X5CrNiMo1810
X5CrNiMo1812
TP316LSUS316L3605/316S141.4404X2CrNiMo1810
X2CrNiMo1812
TP316HSUS316H3059/316S18
3605/316S59
  
-(316Ti) 1.4571X10CrNiMoTi1810
TP317SUS3173059/317S16- 
TP317LSUS317L3059/317S121.4438 
TP321SUS3213059/321S18
3605/321S59
1.4541X10CrNiTI189
TP321HSUS321H3059/321S18
3605/321S59
  
TP347
TP348
SUS3473059/347S18
3605/347S59
1.4450X10CrNiNb189
TP347H
TP348H
SUS347H3059/347S18
3605/347S59
  
TP405SUS405 1.4002X7CrA113
TP410SUS410TB 1.4000X7Cr13
X7Cr14
X10Cr13
X15Cr13
TP409SUS409 1.4512-
TP430SUS4303059/430S151.4016X8Cr19
TP444SUS444   
S31803SUS329 J3L 1.4462-
S31254- --