Hot rolled black welded square structural hollow section
1.Product Description: rectangular hollow section
| electric-resistance-welded | |||||||||
| item | Chemical composition max % | Item | mechanical property | ||||||
| steel | C % | Mn % | S % | P % | Si % | steel | yield point Mpa | tensile strength Mpa | elongation % |
| Grade A | 0.25 | 0.95 | 0.045 | 0.05 | -- | Grade A | 205 (min) | 330 (min) | 26-30 |
| Grade B | 0.3 | 1.2 | 0.045 | 0.05 | -- | Grade B | 240 (min) | 415 (min) | 21-26 |
| Quality Standard: ASTM A53 ASTM A500 Standard Specification for Pipe, Black,and Hot-Dipped, Zinc-Coated, Welded and Seamless | |||||||||
| chemical requirement | mechanical property | shaped structural tubing | |||||||||||
| Element | Composition. % | Grade A | Grade B | Grade C | Grade D | ||||||||
| Grade A, B and D | Grade C | tensile strength,min, | psi | 45000 | 58000 | 62000 | 58000 | ||||||
| Heat Analysis | Product Analysis | Heat Analysis | Product Analysis | Mpa | 310 | 400 | 427 | 400 | |||||
| yield strength, min, | psi | 33000 | 42000 | 46000 | 36000 | ||||||||
| C, max | 0.26 | 0.30 | 0.23 | 0.27 | Mpa | 228 | 290 | 317 | 250 | ||||
| Mn, max | … | … | 1.35 | 1.40 | elongation in 2in. (50.8mm),min % | 25 | 23 | 21 | 23 | ||||
| P, max | 0.035 | 0.045 | 0.035 | 0.045 | quality standard: ASTM A500 standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes | ||||||||
| S, max | 0.035 | 0.045 | 0.035 | 0.045 | |||||||||
| Copper,(when specified) min | 0.20 | 0.18 | 0.20 | 0.18 | |||||||||
| steel grade | mnimum yield strength Mpa | tensile strength Mpa | mnimum elongation | |||||||||||
| specified thickness mm | specified thickness mm | specified thickness | ||||||||||||
| steel name | steel number | < = 16 | 17 - 40 | 41 - 63 | 64 -80 | 81 - 100 | 101 - 120 | < = 3 | 4 - 100 | 101 - 120 | < = 40 | 41--63 | 64--100 | 101--120 |
| S235JRH | 1.0039 | 235 | 225 | 215 | 215 | 215 | 195 | 360--510 | 360--510 | 350--500 | 26 | 25 | 24 | 22 |
| S275JOH | 1.0149 | 275 | 265 | 355 | 245 | 235 | 225 | 430--580 | 410--560 | 400--540 | 23 | 22 | 21 | 19 |
| S275J2H | 1.0138 | |||||||||||||
| S355JOH | 1.0547 | 355 | 345 | 355 | 325 | 295 | 295 | 510--680 | 470--630 | 450--600 | 22 | 21 | 20 | 18 |
| S355J2H | 1.0576 | |||||||||||||
| S355K2H | 1.0512 | |||||||||||||
2. Specification
| square | rectangular | ||||||||||||
| OD mm | WT mm | OD mm | WT mm | OD mm | WT mm | OD mm | WT mm | OD mm | WT mm | ||||
| 20*20 | 1.0-2.0 | 130*130 | 2.5-12.0 | 20*30 | 1.0-3.0 | 50*80 | 1.8-6.0 | 100*150 | 2.5-12.0 | ||||
| 25*25 | 1.0-3.0 | 140*140 | 2.5-12.0 | 20*40 | 1.2-3.0 | 50*90 | 1.8-6.0 | 100*200 | 2.5-12.0 | ||||
| 30*30 | 1.2-3.0 | 150*150 | 2.5-12.0 | 25*40 | 1.2-3.0 | 50*100 | 1.5-6.0 | 100*250 | 2.5-12.0 | ||||
| 40*40 | 1.2-5.0 | 160*160 | 2.5-12.0 | 25*50 | 1.2-5.0 | 50*120 | 1.5-6.0 | 100*300 | 3.0-12.0 | ||||
| 50*50 | 1.2-6.0 | 180*180 | 2.5-12.0 | 30*40 | 1.2-3.0 | 60*80 | 1.3-6.0 | 100*400 | 11.5-12.0 | ||||
| 60*60 | 1.3-6.0 | 200*200 | 3.0-12.0 | 30*50 | 1.2-5.0 | 60*90 | 1.5-6.0 | 150*200 | 2.5-12.0 | ||||
| 70*70 | 1.3-6.0 | 220*220 | 3.5-12.0 | 30*60 | 1.2-6.0 | 60*100 | 1.5-6.0 | 150*250 | 3.0-12.0 | ||||
| 75*75 | 1.5-6.0 | 250*250 | 4.5-12.0 | 40*50 | 1.2-6.0 | 60*120 | 1.5-6.0 | 150*300 | 3.0-12.0 | ||||
| 80*80 | 1.5-6.0 | 300*300 | 4.0-12.0 | 40*60 | 1.2-6.0 | 75*125 | 1.5-12.0 | 200*300 | 4.5-12.0 | ||||
| 90*90 | 2.0-6.0 | 350*350 | 6.0-12.0 | 40*80 | 1.3-6.0 | 80*100 | 1.5-6.0 | 200*400 | 4.75-12.0 | ||||
| 100*100 | 1.5-12.0 | 400*400 | 6.0-12.0 | 40*100 | 1.3-6.0 | 80*120 | 1.5-12.0 | 300*400 | 5.75-12.0 | ||||
| 120*120 | 2.5-12.0 | 50*70 | 1.3-6.0 | 80*140 | 2.5-12.0 | 300*500 | 6.0-12.0 | ||||||
| We are the manufacturer of steel pipe with many years experience. | 80*160 | 2.5-12.0 | 400*600 | 6-12.0 | |||||||||
3.Picture of goods
4.certificate.
5. company intruction
Sino Metal Material Co., Ltd. is a professional manufacturer & exporter of rectangular hollow section, specialized in the field for many years .Our main market is South East Asia, South-Asia, The Middle East, North America , South America, Australia . If you are the buyer from these area , please don't hesitate to contact us , for we have many advantages in these market . but if you are not from these area, also please feel free to contact us , we would send our best offer for your reference .
For more details about the rectangular hollow section, please feel free to contact us, we would send the info in time.
If you need our pipe, please contact me . Do not hesitate!
SINO METAL MATERIAL CO. , LTD
Contact person:Betty
Tel:86-22-59518858
Fax:86-22-59518955
Tel:+86-18920303001
Skype:betty1992123
QQ:1571699840
Address : CUIJIAZHUANG DEVELOPMENT ZONE.DAQIUZHUANG
VILLAGE JINGHAI COUNTY.TIANJIN.CHINA
Email:sinometalbetty(at)foxmail(dot)com