Q345D/Q235B/Q345E Steel Hollow Section

Product Details

Q345D/Q235B/Q345E steel hollow section

Quick detail

1.Place of Origin:Tianjin, China (Mainland)

2.Section Shapes:Square/Rectangular

3.Surface Treatment:Painted, Oiled, galvanized etc.

4.Inspection:With Hydraulic Testing, Eddy Current , Infrared Test


Steel Hollow Section can be circular, square, or rectangular sections, although other shapes are available, such as elliptical. Steel Hollow Section is sometimes mistakenly referenced as hollow structural steel. Rectangular and square Steel Hollow Section are also commonly called tube steel or structural tubing. Square and rectangular pipe is hollow square cross section light thin wall steel pipe. Having Good comprehensive mechanical performance, weldability, cold and hot working performance and corrosion resistance are good, good low temperature toughness. It's widely used for construction, machinery manufacturing and steel construction project. Like shipbuilding, steel structure engineering, bridge and other high load of welded structure, etc.

Q345D Steel Hollow Section specification


Q345D Steel Hollow Section


Section shape: square,rectangular

Thickness: 1.0mm-20mm

Outer diameter: 20mm*20mm-400mm*400mm,15*20mm-400*600mm


ASTM A500, BS1387,GB3091,ASTMA53, B36.10, BS EN1029, GB/T9711 etc


Q195, Q235, Q345(B,C,D,E); ASTM A53 GrA,GrB; STKM11,ST37,ST52, 16Mn,etc.


Plain ends, cutting etc

Surface Treatment

1. Galvanized

2. PVC,black and color painting

3. Transparent oil,anti-rust oil

4. According to clients requirement


1. Bundle

2. Bulk

3. Plastic bags ,etc

Min order

1 ton, more quantity price will be lower

Payment terms

T/T, L/C at sight, western union etc.

Deliver time

Within 7-30 days after deposit, ASAP


We can do special orders as customer’s requests.

We also can provide all kinds of steel hollow pipes.

All the production process are made under the ISO9001:2008 strictly

Key words: rectangular steel pipe/square steel pipe/mild steel hollow section/galvanized steel hollow section/s275 square hollow section


Steel hollow section are widely used in Construction,machine structure pipe, Agriculture equipment pipe, Water and gas pipe, Greenhouse pipe, Building material tube, Furniture tube, Low pressure fluid tube etc. 

Competitive advantage

1.One-stop purchasing saving time and cost for customer

2.Customized production and packing for customer

3.Providing one-stop solution for customer with 30 years sales experience

4.Making sure the safety and delivery time of the cargo because of close cooperation between us and major shipping companies 

5.Discount according to order quantity

Loading and shipping

Welcome to wholesale low price q345d/q235b/q345e steel hollow section in stock from our factory. TOPSINO is one of the most competitive Square Steel Pipe manufacturers and suppliers in China.