Size / Out Diameter	Square Hollow Section: 20x20mm-400x400mm Rectangular Hollow Section: 20x30mm-250x500mm
Length	General 5.8m , 6m(20ft) Customized length is avaliable
Material	Carbon Steel Q195, Q235, Q345, A500 Grade A, A500 Grade B, A36, L350, L250 ects.
Technic Standard	EN 10219, ASTM A500, AS/NZS1163, GB/T 6728

A500 Carbon Steel Square Tubing according to the production process: hot rolled seamless square tube, cold drawn seamless square tube, squeeze seamless square tube, welded square tube. The welded square pipe is divided into 1, according to the process: arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnace welding square tube 2, according to the weld - straight seam welding square pipe, spiral welding square pipe. The material classification A500 Carbon Steel Square Tubing according to the material: plain carbon steel square tube, low alloy square tube. 1, general carbon steel is divided into: Q195, Q215, Q235, SS400, 20# steel, 45# steel and so on. 2, low alloy steel is divided into: Q345, 16Mn, Q390, ST52-3, etc. Production standard classification Square tube according to production standards: gb square tube, Japanese standard square tube, British system square tube, American standard square tube, European standard square tube, non-standard square tube. Section shape classification Square pipes are classified according to section shape: 1, simple section of square tube: square tube, rectangular square tube. 2, complex section square tube: flower shaped square tube, open square tube, corrugated square tube, shaped square tube. Surface treatment classification Square tube according to the surface treatment: hot dip galvanized square tube, electric galvanized square tube, oil coated square tube, pickling square tube. Use classification Square tubes are classified according to their uses: square tubes for decoration, square tubes for machine tools, square tubes for mechanical industry, square tubes for chemical industry, square tubes for steel structures, square tubes for shipbuilding, square tubes for automobiles, square tubes for steel beams and columns, square tubes for special purposes. Classification of wall thickness Square rectangular tube according to the wall thickness classification: ultra thick wall square rectangular tube, thick wall square rectangular tube and thin wall square rectangular tube.

Square Tube / Square Pipe / Square Hollow Section / SHS		Rectangular Tube / Rectangular Pipe / Rectangular Hollow Section / RHS
Out Diameter	Out Dimeter	Out Diameter	Out Diameter
Width x Width (inch)	Width x Width (mm)	Width x Width (inch)	Width x Width (mm)
3/4" x 3/4"	20x20	3/4" x 1 1/2"	20x40
1" x 1"	25x25	1" x 2"	25x50
1 1/4" x 1 1/4"	30x30	1 1/4 x 2"	30x50
1 1/2" x 1 1/2"	40x40 or 38x38	1 1/2" x 2 1/2"	40x60
2" x 2"	50x50	1 1 /2" x 3"	40x80
2 1/2" x 2 1/2"	65x65 or 60x60	2"x 4"	50x100
3" x 3"	75x75 or 80x80	3" x 4"	80x100
4"x 4"	100x100	4" x 6"	100x150
5"x5"	125x125	4" x 8"	100x200
6"x 6"	150x150	6" x 8"	150x200
to	to	to	to
15.7 inch x 15.7 inch	400x400	10" x 20"	250x500

Product Name	square and rectangular steel pipe
Specifications	Square pipe: 20*20mm~500*500mm Rectangular pipe: 20*40mm~300*500mm Thickness: 1.2mm~20mm Length: 2.0m~12m
Material	Low carbon steel
Steel Grade	Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C
Standard	EN10219, EN10210 GB/T 6728 JIS G3466 ASTM A500, A36
Surface Anti-rusty Coating	Slight oiled with PVC plastic wrapped
Pipe Ends	Plain ends
Certificates	ISO 9001 / ISO 18001 / ISO 14001 / CE
Packing and Shipment	1. OD 300mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles 2. above OD 300mm in bulk or according to custom opinion 3. 25 tons/container and 5 tons/size for a trial order; 4. For 20" container the max length is 5.8m; 5. For 40" container the max length is 11.8m.
Usage	Construction / building materials steel pipeStructure steel pipe Solar structure component steel pipe Fence post steel pipe Greenhouse frame steel pipe
Trade terms	FOB, CFR, CIF, EXW, FCA
Payment terms	T/T, LC
Delivery time	15-45 days (based on quantity) after receiving advanced payment by T/T or LC .
Main market	Southeast Asia, South Asia, Middle East, Europe, Middle&South America, Africa and Oceania