JIANGSU IRUNT STEEL GROUP CO., LTD.
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20*20/30*30/40*40/50*50 /60*60mm Welded Black Square Rectangular Tube
| Size | OD | 20*20-500*500MM |
| Wall Thickness | 0.6 mm-15mm | |
| Length | 1-12M | |
| Standard | ASTM A 500 Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes | |
| BS EN 10219-2 :2006 Cold formed welded structural hollow sections finegrain steels | ||
| Steel Grade | S235, S235JR, S235 G2H, S275, S275JR, S355JRH ,S355J2H | |
| St33, St37, St44, ST52 | ||
| JIS G3444 STK290,STK400,STK500,STK490,STK540 | ||
| Steel material | Q195 → SS330,ST37,ST42 | |
| Q235 → SS400,S235JR | ||
| Q345 → S355JR,SS500,ST52 | ||
| Zinc Weight | 40g,60g,80g,100g,120g,270g,400g,500g,550g | |
| 7μm ,8μm, 15μm ,20μm ,40μm ,60μm,70μm,80μm | ||
| Usage | 1)Low Pressure Liquid, Water, Gas, Oil, Line Pipe | |
| 2)Construction , Structure | ||
| 3)Agriculture fence post , door pipe | ||
| COLD ROLLED BLACK ANNEALED STEEL TUBE | |||||||
| ROUND PIPE | SQUARE PIPE | RECTANGULAR TUBE | OVAL TUBE | ||||
| SIZE(mm) | thickness(mm) | SIZE(mm) | THICKNESS(mm) | size(mm) | thickness(mm) | size(mm) | thickness(mm) |
| 14 | 0.6-1.0 | 12*12 | 0.6-1.0 | 10*20 | 0.6-1.2 | 15*30 | 0.6-1.5 |
| 16 | 0.6-1.4 | 15*15 | 0.6-1.2 | 12.5*25 | 0.6-1.3 | 20*40 | 0.6-1.8 |
| 19 | 0.6-1.5 | 16*16 | 0.6-1.3 | 13*26 | 0.6-1.5 | 19*49 | 0.6-1.8 |
| 20 | 0.6-1.5 | 18*18 | 0.6-1.3 | 13*38 | 0.6-1.5 | 20*50 | 0.6-1.8 |
| 22 | 0.6-1.5 | 19*19 | 0.6-1.5 | 15*30 | 0.6-1.5 | 25*50 | 0.6-1.8 |
| 25 | 0.6-1.8 | 20*20 | 0.6-1.5 | 16*36 | 0.6-1.5 | 30*60 | 0.7-1.8 |
| 25.4 | 0.6-1.8 | 22*22 | 0.6-1.5 | 17*37 | 0.6-1.5 | L / T / Z SHAPE TUBE | |
| 28 | 0.6-1.8 | 23*23 | 0.6-1.5 | 17*42 | 0.6-1.5 | SIZE | THICKNESS |
| 28.6 | 0.7-1.8 | 24*24 | 0.6-1.5 | 19*38 | 0.6-1.5 | 28L/T/Z | 0.7-1.5 |
| 30 | 0.7-1.8 | 25*25 | 0.6-1.5 | 20*30 | 0.6-1.5 | 38L/T/Z | 0.7-1.5 |
| 32 | 0.7-1.8 | 28*28 | 0.6-1.5 | 20*40 | 0.6-1.5 | 34L/T/Z | 0.7-1.5 |
| 34 | 0.7-1.8 | 30*30 | 0.6-1.5 | 20*50 | 0.6-1.5 | 42/L/T/Z | 0.7-1.5 |
| 35 | 0.7-1.8 | 32*32 | 0.6-1.5 | 30*40 | 0.6-1.5 | ||
| 38 | 0.7-1.8 | 35*35 | 0.6-1.5 | 25*40 | 0.6-1.5 | ||
| 40 | 0.7-1.8 | 36*36 | 0.6-1.5 | 25*50 | 0.6-1.5 | ||
| 42 | 0.7-1.8 | 37*37 | 0.6-1.5 | 27*40 | 0.6-1.5 | ||
| 45 | 0.7-1.8 | 38*38 | 0.6-1.5 | 30*50 | 0.7-1.5 | ||
| 48 | 0.7-1.8 | 40*40 | 0.6-1.5 | 30*60 | 0.7-1.5 | ||
| 50 | 0.7-1.8 | 47*47 | 0.7-1.5 | 40*60 | 0.7-1.5 | ||
| 58 | 0.8-1.8 | 50*50 | 0.8-1.8 | 40*80 | 0.8-1.5 | ||
| 60 | 0.8-1.8 | 60*60 | 0.8-1.8 | 25*38 | 0.6-1.5 | ||
| 63.5 | 0.8-1.8 | ||||||
| 75 | 0.8-1.8 | ||||||
Surface Treatment
1) Color Painted (Black / Red / Varnish coating)
2) Galvanized
3) Oiled
4) As Clients' Requirements
