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We are specialized in making seamless rectangular steel tube . and the steel grade will be Q345B,SS355,ASTM A500,STKR490,ST52 - details see: https://www.machineto.com/machinery-seamless-rectangular-steel-tube-10211174

1) commodity name:seamless rectangular steel tube

2) process method:cold rolled/cold formed

3) surface finish:annealed/ nomal temperature

4) steel grade:Q345B/C/D,ASTM A500B/C,SS355JR,SS355J2H ,ST37,ST44,ST52 and so on

5) standards:GB/T3094-2000,ASTM A500,SS490,EN10210,EN10219 and so on

6) size:100*200mm

7) wall thickness:20mm

8) length:less than 13m

9) advantages:big outside,thick,seamless,high accuarcy and so on

10) use: Construction,making machinery,ship building

Windows of model steel door,building material,fence,heating

Facilities ,airport structure and so on

11) quality certificaiton:CE,CCS,ISO9001