Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

Committed to global industrial innovation with more stable high-quality products and more efficient professional services.

S31803 Duplex Steel Heat Exchanger Tube With Annealed&Pickling Surface


   Our heat exchanger tube with pickling and annealing surface is very popular in boilers and heat exchangers industry , water heater industry , air-conditioning industry etc . This kind of seamless tubes are have a very important position in our all products .


Grade


S31803; TP304 ; TP304H ; TP304L ; TP316 ; TP316L ; TP 321 ; TP321H ; TP317L ; TP310S ; TP347H



Standard


ASTM A789 , ASTM A213 , ASTM A 269 , etc
Size


Routine OD : 19.05mm,25.4mm,31.8mm,38.1mm





WT : 1.2-2.77mm


Length : 


According to customer needs up to 20m
Advantage


Superior surface finish

Better mechanical property

More precise dimension ;

Perfect inspection method and inspection equipment



Duplex U Tube Application :


a) Petroleum , chemical enterprise , super heater of boiler and heat exchanger

b) High temperature-resistant transmission fluid pipe in power station

c) Ship with pressure pipe

d) Exhaust purification device

e) Construction and ornament

f) solar industry , military , semiconductor etc


Duplex Steel Tube Terms & Conditions :


1 . Price Term : FOB , CFR , CIF or as negotiation

2 . Payment : T / T , L / C or as negotiation

3 . Delivery time : 30 working days after received your deposit ( Normally according to the order quantity )

4 . Package : Iron case ; woven bag or as per customer’s requirement

5 . Quality Requirement : Mill Test Certificate will be supplied with shipment , Third Part Inspection is acceptable


Duplex Steel Tube Chemical Composition:


UNS DesignationCSiMnPSCrNiMoNCu
maxmaxmaxmaxmax





S318030.03120.030.0221.0 - 23.04.5 - 6.52.5 - 3.50.08 - 0.20-
S322050.03120.030.0222.0 - 23.04.5 - 6.53.0 - 3.50.14 - 0.20-
S327500.030.81.20.0350.0224.0 - 26.06.0 - 8.03.0 - 5.00.24 - 0.320.5 max
S327600.05110.030.0124.0 - 26.06.0 - 8.03.0 - 4.00.20 - 0.300.50 -1.00


VIP SERVICE

VR (Virtual) Mill Introduction

Professional Remote Technical Guidanceion

Accept Third-party Inspection

Door to Door Shipment

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