Q345 Square And Rectangular Steel Pipes

             Q345 is a low-alloy material, corresponding to the 16Mn grade of low-alloy high-strength structural steel in the old national standard GB/T1591-1988, and the grade in the new national standard GB/T1591-1994 is Q345 (Q345 has five quality grades, Q345A~ Q345E), Q345A corresponding to the American ASTM grade is Gr 50. Q345 square pipe, the English name is (Low alloy square pipe, Grade Q345 steel hollow section), is a square equilateral Steel Pipe. Execute the national standard GBT 6728-2002 cold-formed hollow section steel for structure processing and production, which is produced by rolling Q345B strip steel. The low alloy square tube is very different from the ordinary square tube in the raw material material (Q195, Q215, Q235) because of its low alloy material (Q345B). , Flattening, curling, welding to form a round tube, and then rolling from the round tube into a square tube and then cutting it into the required length. The commonly used length is 6 meters, 12 meters or other fixed lengths. The large diameter of Q345 square tube is 800*800*10-25, which is the largest square tube in the world. Q345 square tube is a kind of hollow square section light steel tube, also known as steel refrigeration bending section. It is made of Q345 hot-rolled or cold-rolled strip or coil as the base material, which is formed by cold bending and then high-frequency welding. In addition to the thickening of the wall thickness of the hot-rolled extra-thick-walled square tube, its corner size and edge straightness have reached or even exceeded the level of the resistance-welded cold-formed square tube. Q345 square tube is used in construction, machinery manufacturing, and steel construction projects. , shipbuilding, solar power brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc. The Q345 material square tube is generally thick-walled tube (above 5mm), the square tube is produced from 80*80mm, and the rectangular tube is produced from 80*120mm. Q345B low alloy square tube is widely used in curtain wall, steel structure, machining, airport, bridge construction and other fields with high strength requirements.       

   Simply Bundled,10-100 pieces to a bundle                   Full Wrapped by water-proof material                          Full wrapped with Wooden pallet

 Container Size:20ft/40ft                                    Max loading length:5.8m,20ft/6-12m,40ft                     Maximum loading weight:25 Ton

Q:Are you a manufacturer?

A: Yes , we are a Seamless Steel Pipe  manufacturer, We have own factory, which is located in Shandong,China. We have a leading power in producing and exporting hot rolled seamless steel pipe,cold rolled seamless steel pipe,cold drawn seamless steel pipe and Alloy Seamless Steel Pipe etc. We promise that we are what you are looking for. 
Q:Can we visit your factory ?
A:Warmly welcome once we have your schedule we will pick you up .
Q: Do you have quality control?
A: Yes, we can accept BV, SGS third inspection .
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So we can give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit.
2.We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.