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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

cast pipes

standard & specification

 
 
ASTM A199 steel tubes,T5, T11, T12, T22, T91

Grade T5c shall have a titanium content of not less than 4 times the carbon content and not more than 0.70%.
2 Grade T91 - other elements: Cb 0.06 - 0.10; N 0.030 - 0.070; Ni 0.40max; Al 0.04max.
3 Grade T92 - other elements: W 1.50 - 2.00; Cb 0.04 - 0.09; B 0.001 - 0.006; N 0.03 - 0.07; Ni 0.40max; Al 0.04max.
4 Grade 18Cr-2Mo shall have Ti + Cb = 0.20 + 4(C + N)min, 0.80max, other elements Nmax0.035; (Ni + Cu)max1.00.

Grade C Si Mn P S Cr Mo V YSmin TSmin El (%)
                  KSI [MPa] KSI [MPa]  
T2 0.10-0.20 0.10-0.30 0.30-0.61 0.025 0.025 0.50-0.81 0.44-0.65 ... 30[205] 60[415] 30
T5 0.15max 0.50max 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T5b 0.15max 1.00-2.00 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T5c1 0.12max 0.50max 0.30-0.60 0.025 0.025 4.00-6.00 0.45-0.65 ... 30[205] 60[415] 30
T9 0.15max 0.25-1.00 0.30-0.60 0.025 0.025 8.00-10.00 0.90-1.10 ... 30[205] 60[415] 30
T11 0.05-0.15 0.50-1.00 0.30-0.60 0.025 0.025 1.00-1.50 0.44-0.65 ... 30[205] 60[415] 30
T12 0.05-0.15 0.50max 0.30-0.61 0.025 0.025 0.80-1.25 0.44-0.65 ... 32[220] 60[415] 30
T17 0.15-0.25 0.15-0.35 0.30-0.61 0.025 0.025 0.80-1.25 ... 0.15 30[205] 60[415] 30
T21 0.05-0.15 0.50max 0.30-0.60 0.025 0.025 2.65-3.35 0.80-1.06 ... 30[205] 60[415] 30
T22 0.05-0.15 0.50max 0.30-0.60 0.025 0.025 1.90-2.60 0.87-1.13 ... 30[205] 60[415] 30
T912 0.08-0.12 0.20-0.50 0.30-0.60 0.020 0.010 8.00-9.50 0.85-1.05 0.18-0.25 60[415] 85[585] 20
T923 0.07-0.13 0.50max 0.30-0.60 0.020 0.010 8.50-9.50 0.30-0.60 0.15-0.25 64[440] 90[620] 20
18Cr-2Mo4 0.025max 1.00max 0.30-0.60 0.040 0.030 17.5-19.5 1.75-2.50 ... 40[275] 60[415] 20
 
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