Complaint
Square tube is a kind of hollow square section light thin-walled steel tube, also known as steel cold-formed profile. It is made of Q235 hot-rolled or cold-rolled strip or coil as the base metal, which is shaped by cold bending and then welded by high frequency. The corner size and edge straightness of hot rolled square tube with extra thick wall can reach or even exceed the level of resistance welding cold formed square tube except for wall thickness thickening. Good comprehensive mechanical properties, good weldability, cold and hot workability and corrosion resistance, and good low temperature toughness. According to the production process, square tube is divided into hot rolled seamless square tube, cold drawn seamless square tube, extruded seamless square tube and welded square tube. Applications include construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power bracket, steel structure engineering, Mechanical engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other high load welded structural parts, etc.
Square tube, square pipe, rectangular tube, square iron, welded square tube, welded rectangular tube.
| S30400 | C | Mn | P | S | Si | Cr | Ni | N | Cu | |
| 1 | ASTM A276/A276M-15 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 2 | ASTM A959-11 | 0.07 | 2.00 | 0.045 | 0.030 | 1.00 | 17.5-19.5 | 8.0-11.0 | ||
| 3 | ASTM A240/A240M-15a | 0.07 | 2.00 | 0.045 | 0.030 | 0.75 | 17.5-19.5 | 8.0-10.5 | ||
| 4 | ASTM A182/A182M-15 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | 0.10 | |
| 5 | ASTM A193/A193M-15 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 6 | ASTM A269/A269M-15 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 7 | ASTM A312/A312M-15a | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 8 | ASTM A320/A320M-15a | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 9 | ASTM A403/A403M-15 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 10 | ASTM A493-09(2013) | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-10.5 | 0.10 | 1.00 |
| 11 | ASTM A554-15a (MT-304) | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 12 | JIS G4303:2012 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-10.5 | ||
| 13 | JIS G4304:2012 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-10.5 | ||
| 14 | JIS G4305:2012 | 0.008 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ||
| 15 | GB/T 20878-2007 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 |
| Thickness | 0.25-20mm;or as required |
| Dimensions | 10-2020mm;Dimensions |
| Length | 1000-12000mm,or as required |
| Technique | Hot Rolled Or Cold Rolled |
| Surface treatment | Rust remove, black painting,Galvanized, antirust oil, varnish, 3PE, |
| Standard | ASTM,JIS,GB,DIN,EN |
| Payment Terms | T/T, L/C at sight,West Union |
| Heat Treatment | Annealed; Quenched; Tempered |
| Certification | CE, ISO, COC,SGS,BV,Mill Certificate |
| price terms | FOB,CRF,CIF,EXW, CPT |
| Grade | A35,A36;Q195-Grade B, SS330, SPC, S185;Q215-Grade C,CS Type B, SS330, SPHC,Q235---Grade D, SS400, S235JR, S235JO, S235J2,Q345---SS500, ST52,S355JR |
| Delivery Detail | Standard has Stock; Normal About 3-5days; Custom-made 15-20days;According to order's quantity. |
| Packing | standard export packing (inside:water proof paper,outside:fumigated wooden box)Hexagon Shape Bundle, Covered With Tarpaulin, Containers Or In Bulk |
Shandong Zinc-plastic Moment Steel Co., Ltd., located in Liaocheng, Shandong, the largest steel pipe production base in China, is the earliest subsidiary of Shandong Iron and Steel Group. Founded in 2005, the company has now developed into a large enterprise with 12 stainless steel pipe production lines and an annual production capacity of 1 million tons. In 2017, the company built a new production workshop with an investment of 250 million yuan in the first phase, covering an area of 150 mu. The ERW straight seam high frequency resistance process was used to produce welded pipes for oil and natural gas engineering, with an annual output of about 300000 tons. It was put into production on June 19, 2008. The company has more than 900 employees, including 67 middle and senior technicians and 16 with senior titles.
Shandong Zinc-plastic Moment Steel Co., Ltd., has been rated as the first batch of China's national inspection-free product enterprises, the first batch of China's well-known trademark enterprises and the first China's top 500 enterprises in the industry. The products sell well all over the country and are exported to more than 50 countries such as the European Union, the United States, Australia, Southeast Asia and the Middle East. They are widely used in many national key projects such as the Three Gorges Project, the Capital International Airport, Shanghai Pudong International Airport, the Natural Gas Reconstruction Project of China (Hong Kong) Gas International Co., Ltd., and the Jin-Jin Expressway.
Main business: stainless steel pipe, hot-dip galvanized steel pipe, oil casing, spiral welded pipe, square pipe, steel-plastic composite pipe welded pipe, etc.
Q:What is your advantage?
A:Honest business with competitive price and professional service on export process.
Q:Can you give warranty of your products?
A:Yes,we extend a 100% satisfaction guarantee on all items.Please feel free to feedback immediately if you are not pleased with our quality or service.
Q:How to get a sample?
A:All the samples we are charged. You need to tell us your specific address then we will send by DHL or Fedex to you. All the fees should be charged by yourself.
Q:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.
