JIS3454 STPG370 Seamless Boiler Tubes Cold Drawn Boiler Carbon Steel Tubes 88.9*7.11mm

ASTM A179 seamless boiler tubes 1/2“ to 16" size ISO9000 length 20M

60.3*6.35mm ASTM A192 Tube , A192M Black Carbon Steel Pipe Seamless Cold Drawing

ASTM A179 seamless boiler steel tube for heat exchangers, condensers, heat transfer equipment and similar pipes

Steam Heavy Wall Steel Pipe ASTM A210 high temperature , Seamless boiler tube

ASTM A333 GR6 50.3*3.8mm Seamless Carbon Steel Tube

25.4*2.11 Seamless Boiler Tubes ASTM A192 Pipe Cold Drawing For High Pressure Settings

DIN17175 Seamless Boiler Tubes Heat Resistant Astm A179 Tubing ST35 ST45 ST52

Boiler Nickel Alloy Tube BS 3059 Gr 320 Carbon Steel 60.3*5.4mm

JIS3454 STPG370 Seamless Boiler Tubes Cold Drawn Boiler Carbon Steel Tubes 88.9*7.11mm

60.3*6.35mm ASTM A192 Tube , A192M Black Carbon Steel Pipe Seamless Cold Drawing

DIN17175 Seamless Boiler Tubes Heat Resistant Astm A179 Tubing ST35 ST45 ST52

Seamless SA 210 Boiler Tube JIS3454 JIS3455 JIS3456 JIS3461 Round Steel Tubing Cold Drawing

ASTM A210 Grade.C Seamless Boiler Tubes 20M High Temperature Tubing

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Seamless Precision Steel Tube