Black Square Rectangular Steel welded Tube Square Rectangular Hollow Section
We use ERW( Electric Resistance Welding ) make different pipes with our CNC machines . Our good quality helps us to get many customers in China and abroad .
ERW( Electric Resistance Welding ) and SAW (Submerged Arc Welding)
Specification :
Notes: We have many material suppliers to provide us many kinds of materials with different requirement , but we recommend you to choose our Chinese standard material better .
Shipping:
Company :
Wuxi Tianyouqi International Trade Co., Ltd is belonged to Jiangsu FanGe Intelligent Technology Co.,Ltd and Wuxi TianChen Cold-drawn Steel Co.,Ltd . Jiangsu FanGe Intelligent Technology Co.,Ltd is the manufacturer who manufacture welded pipes for many years and Wuxi TianChen Cold-drawn Steel Co.,Ltd is the manufacturer, found from 2008 with rich experience in cold-drawn steel .We are manufacture-sell group and we can supply technical support and good service .
Certificates:
Contact with us to get last quotation !
Accept customized orders !
We use ERW( Electric Resistance Welding ) make different pipes with our CNC machines . Our good quality helps us to get many customers in China and abroad .
ERW( Electric Resistance Welding ) and SAW (Submerged Arc Welding)
| ERW | SAW | SML | |
| Actual weld- throat length | SAW IS 4-5 times than ERW, | ||
| Overlap | can be cleared , reduce the temperature rise caused by friction | in long length can't be cleared | |
| Internal stress | small, good for pipes | complex, Not good for Cracking and stress corrosion of inner wall defects | |
| Size | short weld-throat length , thickness is uniform ,geometric dimensions have good precision , good anti-corrosion , easy to install | long weld-throat length, finished pipes have weld-throat and anti-corrosion treatment problems | common geometric dimensions,common precision |
| pipe material | better pure steel | steel with more C | |
Specification :
| Material | Types | Outer diameter (mm) | Thickness (mm) | Length(mm) | Chrome |
| GB/T (China) | Square/round | round square shaped | 0.7-4.5mm OD<25mm, T<=2mm OD>38mm, T<=4.5mm | customized | customized |
| JIS(Japan) | Square/round | 14-90mm | 0.7-4.5mm OD<25mm, T<=2mm OD>38mm, T<=4.5mm | customized | customized |
| ASTM(USA) | Square/round | 14-90mm | 0.7-4.5mm OD<25mm, T<=2mm OD>38mm, T<=4.5mm | customized | customized |
| EN(EU) | Square/round | 14-90mm | 0.7-4.5mm OD<25mm, T<=2mm OD>38mm, T<=4.5mm | customized | customized |
| DIN(German) | Square/round | 14-90mm | 0.7-4.5mm OD<25mm, T<=2mm OD>38mm, T<=4.5mm | customized | customized |
Notes: We have many material suppliers to provide us many kinds of materials with different requirement , but we recommend you to choose our Chinese standard material better .
Shipping:
Company :
Wuxi Tianyouqi International Trade Co., Ltd is belonged to Jiangsu FanGe Intelligent Technology Co.,Ltd and Wuxi TianChen Cold-drawn Steel Co.,Ltd . Jiangsu FanGe Intelligent Technology Co.,Ltd is the manufacturer who manufacture welded pipes for many years and Wuxi TianChen Cold-drawn Steel Co.,Ltd is the manufacturer, found from 2008 with rich experience in cold-drawn steel .We are manufacture-sell group and we can supply technical support and good service .
Certificates:
Contact with us to get last quotation !
Accept customized orders !