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Boiler tubes, heat exchanger tubes

Welded pipes

L, LL, KLM finned tubes (finned tubes)

G embedded fin tubes (finned tubes)

(serrated) extruded finned tubes

high frequency welded (serrated) fin tubes (finned tubes)

Laser welded fin tubes (finned tubes)

hot dipped galvanized oval (elliptical) finned tubes, rectangular fin tubes

condenser fin flat tubes

inner finned tubes (finned tubes)

Studded Pipes

H / double H fin tubes (finned tubes)

longitudinal fin tubes (finned tubes)

Tube finning machine

Aluminum plates, strips,foils

Aluminum welding wire rod

Aluminum tubes, profile

Economizer for Boiler

air-cooled heat exchanger (air cooler)

seamless fin tubes with two longitudinal opposite fins

material

standard & specification

 
 
Martensitic stainless steel

TP405 ( 1Cr13Al )— ferritic for welding applications
TP410 ( 1Cr13 )—martensitic (high-strength iron/chromium). Wear-resistant, but less corrosion-resistant.
TP420 ( 2Cr13, 1Cr13 )—Cutlery Grade martensitic; similar to the Brearley's original rustless steel. Excellent polish ability.
TP430 ( 1Cr17 )—decorative, e.g., for automotive trim; ferritic. Good formability, but with reduced temperature and corrosion resistance.

 

Material of Martensitic stainless steel of steel tube contains chromium (12-14%), molybdenum (0.2-1%), nickel (0-<2%), and carbon (about 0.1-1%) (giving it more hardness but making the material a bit more brittle). It is quenched and magnetic. Precipitation-hardening martensitic stainless steels have corrosion resistance comparable to austenitic varieties, but can be precipitation hardened to even higher strengths than the other martensitic grades. The most common, 17-4PH, uses about 17% chromium and 4% nickel. Type 2205— the most widely used duplex (ferritic/austenitic) stainless steel grade. It has both excellent corrosion resistance and high strength. 400 Series—ferritic and martensitic chromium alloys


Comparison of material of martensitic steel tubes (steel pipes) in Different Countries

China CN German Grade DIN Designation USA UNS USA ANSI /td> France AFNOR Britain BS
Y1Cr13  1.4005 X12CrS13 S41600 416  Z12CF13 416S21
1Cr13  1.4006 X10Cr13 S41000 410  Z12C13 410S21
1Cr17  1.4016 X6Cr17 S43000 430  Z8C17 430S15
2Cr13  1.4021 X20Cr13 S42000 420  Z20C13 420S37
3Cr13  1.4034 X46Cr16 - -  Z40C14 (420S45)
1Cr17Ni2  1.4057 X12CrNi172 S43100 431  Z15CN162 431S29
Y1Cr17  1.4104 X12CrMoS17 S43020 430F  Z10CF17 (441S29)
8Cr17  1.4112 X90CrMoV18 S44003 440B  - -
-  1.4122 X35CrMo17 - -  - -
0Cr19Ni9
(0Cr18Ni9)
 1.4301 X5CrNi18 10 S30400 304  Z6CN18.09 304S15
Y1Cr11Ni9  1.4305 X10CrNiS18 9 S30300 303  Z10CNF18.09 303S21
00Cr19Ni11
(00Cr18Ni10)
1.4306 X2CrNi19 11 S30403 304L  Z2CN18.09 304S12
1Cr17Ni7 1.4310 X12CrNi177 S30100 301 Z12CN17.07 -
0Cr17Ni12Mo2 1.4401 X5CrNiMo17 12 2 S31600 316 Z6CND17.11 316S16
00Cr17Ni14Mo2 1.4404 X2CrNiMo17 13 2 S31603 316L Z2CND17.12 316S12
00Cr17NiMo2 1.4435 X2CrNiMo18 14 3 S31603 316L Z2CND17.13 316S12
0Cr17Ni12Mo2 1.4436 X5CrNiMo17 13 3 S31600 316 Z6CND17.12 316S16
00Cr19Ni13Mo3
(00Cr17Ni14Mo3)
1.4438 X2CrNiMo18 16 4 S31703 317L Z2CND19.15 317S12
- 1.4439 X2CrNiMo17 13 5 - 317LNM - -
0Cr19Ni13Mo3 1.4449 X5CrNiMo17 13 S31700 317 - 317S16
0Cr26Ni5Mo2 1.4460 X8CrNiMo27 5 S32900 329 - -
- 1.4462 X2CrNiMoN22 5 S31803 - Z5CND21.08 -
- 1.4539 X2CrNiMoCu25 20 5 N08904 - Z1NCDU25.20 -
0Cr18Ni10Ti
(0Cr18Ni9Ti)
1.4541 X6CrNiTi18 10 S32100 321 Z6CNT18.10 321S12
0Cr18Ni11Nb 1.4550 X6CrNiNb18 10 S34700 347 Z6CNNB18.10 347S17
0Cr18Ni12Mo2Ti 1.4571 X6CrNiMoTi17 12 2 S31635 316Ti Z6CNDT17.12 320S17
- 1.4713 X10CrAl7 - - Z8CA7 -
- 1.4724 X10CrAl3 - - - -
- 1.4742 X10CrAl8 - - Z10CAS18 -
1Cr25Ti 1.4762 X10CrA24 (S44600) (446) Z10CAS24 -
- 1.4821 X20CrNiSi25 4 - - - -
- 1.4828 X15CrNiSi20 12 (S30900) (309) Z15CNS20.12 (309S24)
- 1.4841 X15CrNiSi25 20 S31400 314 Z12CNS25.20 -
0Cr25Ni20 1.4845 X12CrNi25 21 S31008 310S Z12CN25.20 310S24
- 1.4864 X12CrNiSi36 16 N08330 330 (Z12NC37.18) -
- 1.4876 X10CrNiSiAlTi32 20 - - Z8NC32.21 3076NA15H
0Cr18Ni10Ti 1.4878 X12CrNiTi18 9 S32100 321 Z6CNT18.12 321S20
- 2.4068 LCNi99.2 - B160 - -
- 2.4360 NiCu30Fe - B164 - 3076NA13
- 2.4375 NiCu30Al - - - 3076NA18
- 2.4610 NiMo16Cr16Ti - - - 3076NA45
- 2.4816 NiCr15Fe - B166 - 3076NA14
- 2.4856 NiCr21Mo - - - 3076NA43
 
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