Q345B Square Pipe

The company specializes in the production and sales of square tubes, rectangular tubes, welded tubes, and special-shaped steel pipes. Our product range includes high-strength material series, low-temperature resistance series, large-diameter thick-walled series, European, American, and Japanese standard series, cold-rolled precision bright series, and hot-dip galvanized series, etc.

Product Wide Applications: Architectural steel structures (large venues, convention centers, stations, stadiums, residential renovation, etc.), railway bridges, vehicle manufacturing, shipbuilding, traffic facilities, machinery and equipment, wind power equipment, offshore engineering, solar photovoltaic supports, multi-level parking garages, decoration and decoration, fitness equipment, and various other fields.

Square and Welded Pipes Materials and Standards: Q235B, Q345B, Q345C, Q345D, Q345E, Q355B, Q355C, Q355D, Q355E, Q355JR, Q355J2, Q355JOH, Q355J2H, Q390B/C/D/E, Q420B/C/D/E, Q460B/C/D/E, Q500 Series, Q510 Series, Q610 Series, Q690 Series, Q700 Series, QSTE700TM, SPCC, SECC, SPHC, SS400, 25Mn, 65Mn, etc., in compliance with standards: GB/T6725-2008, GB/T6726-2008, GB/T6727-2008, GB/T6728-2008, GB/T3091-2008, GB/T3094-2000, GLSG3445, GLSG3446, EN10210, EN10219, etc.

Square tube specifications: 20*20 -- 600*600 (1mm -- 35mm)

Rectangular tube specifications: 10*20 - 600*800 (1mm - 35mm)

Welded pipe specifications: 20-800*(1mm-40mm)

Special-shaped Steel Tubes: Capable of producing various special shapes, including P-shape, D-shape, elliptical, and more.

Standard sizes for mechanical and construction square tubes: 50*50*5, 60*60*6, 70*70*6, 76*76*6, 80*80*8, 86*86*8, 90*90*8, 98*98*10, 108*108*10, 118*118*10, 120*120*12, 135*135*12, 200*200*12, 300*300*14, 400*400*16, 500*500*18, 600*600*20