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Boiler tubes

Heat exchanger tubes

Welded pipes

L, LL, KLM finned tubes (fin tubes)

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

(serrated) extruded finned tubes

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

condenser fin flat tubes

H / double H finned tubes (fin tubes)

Studded Pipes

Laser welded finned tubes (fin tubes)

G embedded finned tubes (fin tubes)

inner finned tubes (fin tubes)

longitudinal finned tubes (fin tubes)

seamless finned tubes with two longitudinal opposite fins

casting alloy tubes

Tube finning machine

Aluminum plates, strips,foils

Aluminum welding wire rod

Aluminum tubes, profile

Economizer for Boiler

air-cooled heat exchanger (air cooler)

material

standard & specification
 
ASTM A519 steel tubes4130 4140, etc.

ASTM A519 - 06 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing.

 

Grade C Mn P≤ S≤ Si Cr Mo
1008 ≤0.10 0.30-0.50
 0.04 0.05 - - -
1010 0.08-0.13 0.30-0.60 0.04 0.05 - - -
1018 0.15-0.20 0.60-0.90 0.04 0.05 - - -
1020 0.18-0.23 0.30-0.60 0.04 0.05 - - -
1025 0.22-0.28 0.30-0.60 0.04 0.05 - - -
1026 0.22-0.28 0.60-0.90 0.04 0.05 - - -
4130 0.28-0.33 0.40-0.60 0.04 0.05 0.15-0.35 0.80-1.10 0.15-0.25
4140 0.38-0.43 0.75-1.00 0.04 0.05 0.15-0.35 0.80-1.10 0.15-0.25
 
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