Place of Origin: Shandong, China Application: Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe, Other, Fluid Pipe Boiler Pipe Drill Pipe Hydraulic Pipe Gas Pipe OIL PIPE Alloy Or Not: Non-Alloy Section Shape: rectangular Special Pipe: API Pipe, Other, EMT Pipe, Thick Wall Pipe Thickness: 1 - 120 mm Standard: ASTM Length: 12M, 6m, 6.4M, Customerized Certificate: API, ce, Bsi, BIS, SASO, tisi, JIS, GS Grade: carbon steel tube Surface Treatment: galvanized Tolerance: ±0.01% Processing Service: Bending, Welding, Decoiling, Punching, Cutting Oiled or Non-oiled: Non-oiledPurpose of square tube: construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power generation support, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, highway railing, house construction, pressure vessel, oil storage tank, bridge and power station equipment.Invoicing: by actual weight Delivery Time: 7-15 days MOQ: 500KG Product name: rectangular steel pipe Surface: Customer's Request Material: ST37/ST45/ST52/25Mn/27SiMn/E355/SAE1026/STKM13C Type: Carbon Steel Tube Steel Grade: Grade B/X42/X52/X60/X70 L245/L290/S320/L360/L390/L415 Color: Customized Color Item: FOB CIF CFR EXW Supply Ability: 100 Ton/Tons per Week Packaging Details: wooden box or customer requirement Port: qingdao, shanghai port.1. Free sample can be supplied 2. Trial order  is acceptable 3. Third party test is acceptable 4. Delivery time guarantee