www.finnedtubes.cn | Site map | Contact | Download Catalogue | Print | Favorite | 中文magvant.cn
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)


standard & specification

Heat resistant pressure-vessel steel tubes

P235GH. P265GH. P295GH. P355GH. 16Mo3. 13CrMo4-5:


Heat-resistant pressure-vessel steels:These steel grades are characterised by a minimum yield strength of 235 - 355 MPa and by good weld ability. These grades are used above all for manufacturing boilers, pressure vessels and pipes transporting hot liquids. The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material. The grades of this series offer good cold and hot-forming properties.Chemical composition;in percent by weight [%](Heat analysis)


Grade C Si Mn S N Altotal Cu1) Cr Ni Mo
    max.   max. max. min. max.      
P235GH max.0,16 0,35 0,602)-1,20 0,015 0,0123) ≥0,020 0,30 max.0,30    
P265GH max.0,20 0,40 0,802)-1,40 0,015 0,0123) ≥0,020 0,30 max.0,30    
P295GH 0,08-0,20 0,40 0,902)-1,50 0,015 0,0123) ≥0,020 0,30 max.0,30    
P355GH 0,10-0,22 0,60 1,10-1,70 0,015 0,0123) ≥0,020 0,30 max.0,30    
16Mo3 0,12-0,20 0,35 0,40-0,90 0,010 0,012 6) 0,30 max.0,30   0,25-0,35
13CrMo4-5 0,08-0,18 0,35 0,40-1,00 0,010 0,012 6) 0,30 0,704)-1,15 - 0,40-0,60

Pmax.0,025 Ni max0,30 Momax.0,08

1)AlowerCu-content and a maximum tin content maybe agreed intheorder, e.g. with respectto form ability.
2)For thicknesses < 6,0mm, aminimum content for Mn thatis 0,20% smaller than specified ispermitted.
4)If resistance against high-pressure hydrogen is important, aminimum percent age by mass of Cr of 0,80%
may be agreed in the order.
6)Theal-content of the melting is to determine and to indicate in the certification

Search >>

Contact Us >>

Fax: +86-510-68930106
E-mail: info@magvant.com

Technical communication


Terms & conditions
Privacy statement