SQUARE PIPE

Product Introduction

Keywords（pipe type）:carbon steel pipe,Seamless Steel Pipe, Seamless Stainless Steel Pipe, Steel Piping;Hollow Section;Square Pipe
OD:20*20~1200*1200mm
Tinckness:2,3,4,5,6,8,10,12,14,16,18,20mm
Length:5m or Customized
Standard & Grade:ASTM A500, ASTM A53, EN 10210, EN 10219, JIS G 3466, BS 1387, BS 6323
Marterial:S235JR, S355JR, S275JR, C350LO, C250LO, G250, G350（C450LO）
Delivery:Within 30 days and Depends on your order quantity
Payment:TT, LC , OA , D/P
Packing:Waterproof Paper Wrapped, Steel Strips Bundled, Two Tags on Each Bundle
usage:In Industrial Construction, Machinery/Rack/Container manufacturing
Description
Shape:
Hollow Sections: Square, Rectangular, Round, Triangular, Hexagonal, Eliptical Hollow sections
Scaffolding
Usage:
Hollow Sections:
Construction: Hall Structure, Sea Trestle, Airport Structure, Shipbuilding, Security Door Frames, Garage Doors, Strengthening Liners of Steel Doors and Windows, Indoor Partition Walls, Cable Bridge Structures and Expressway Safety Guards, Balustrade, Decorating, Residential, Ornamental Pipes
Automotive Parts:Motorcar Case,Car and Bus Manufacture, Vehicles
Agriculture: Agricultural Equipment
Industry:Machinery,Solar Stent, Offshore Oil Field, Mine Equipment, Electromechanical Hardware, , heavy engineering, Mining and Resources, Process Engineering, Materials Handling,Mechanical Parts
Traffic:Walking Rails, Roll-up Doors, Guardrail, Plaza Structure, Signage, Road Furniture, Fencing
Logistics Storage: Supermarket Shelves, Containers, Transport Industries, Commercial Construction
Other: Sports Apparatus, Leisure Equipment, Furniture, School Furniture
Scaffolding Tube:
Material Storage Racks, Pallets, Hydraulic Platforms, Trusses, Columns, Purlins, Greenhouse Stands Towers
Quality Standard:
Hollow Sections:
GB/T 13793 Longitudinal electric resistance welded steel tubes
GB/T 6728 Cold formed steel hollow sections for general structure–Dimensions,shapes,weight and permissble deviations
ASTM A500 Cold Formed Welded and Seamless Carbon Steel Steel Structural Tubing in Round and Shapes
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
EN 10210 Hot finished structural hollow sections of non-alloy and fine grain structural steels
EN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steels
JIS G 3466 Carbon steel Square for general structural purposes
BS 1387 Steel Tubes for use for Water, Gas, Air and Steam
BS 6323 PART5 SEAMLESS AND WELDED STEEL TUBES FOR AUTOMOBILE MECHANICAL AND GENERAL ENGINEER PURPOSE
IS : 1161 Steel Tubes For Structural purpose and Electric poles.
IS : 3601 Steel tubes for mechanical & general engineering purposes.
IS : 3074 Steel tubes for Automobile purpose.
IS : 4923 Steel tubes for Hollow sections used in structures
DIN 1626 WELDED CIRCULAR TUBES OF NON ALLOY STEELS WITH
SPECIAL QUALITY EQUIREMENTS
DIN 2394 WELDED AND SIZED PRECISION STEEL TUBES
Scaffolding Tube:
GB 15831 Steel tube scaffold couplers
EN 39 Loose steel tubes for tube and coupler scaffolds
BS 1139 Metal scaffolding
Steel Grade:
GB/T 13793, GB/T 6728, GB 15831:
Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08
EN 10210, EN 10219, BS 1387: S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44,ST52
ASTM A500, ASTM A 53: Gr. A, Gr B, Gr C, Gr.D, DC01, DC03, 1008, 1010
JIS G 3466: SS330, SS440, SS490, SPHD, SPHE
Process: ERW and Seamless
Size:
Hollow Sections:
Square:10 mmx10mm – 500 mmx500mm
Retangular:10mm x 20mm – 600mmx400mm
Round: 1/8″ – 4″
Wall Thickness: 0.5 – 20.0mm
Length:0.3 mtr – 18 mtr as customer required
Scaffolding Tube:
Outer Diameter: 38mm, 42mm, 48.3mm-48.6mm
Wall Thickness: 2.0mm, 2.5mm, 2.75mm, 3.0mm, 3.25mm, 3.85mm, 4.0mm
Length: 0.3mtr -18 mtr
Process:
Seamless: Hot Rolled, Hot Explored
Welded: ERW, HFW
Coating: Hot-dipped Galvanised, Electrical Galvanised
Raw Material:
Seamless: Pipe Billet( Hot Rolled, or Con-casting), Mother Pipe
Welded: Hot Rolled Steel Coil (HRC) , Cold Rolled Steel Coil (CRC), Pre-pained Galvanized Steel Strip
End: Square cut, Burr removed
Surface:Lightly oiled, Hot dip galvanized, Electro galvanized, Black
Heat Treatment: Bright Annealed, Black Annealed
Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection
Mill Test Certificate: EN 10204/3.1B

Technical data

Square tubes sizes

Size (mm)	Wall Thickness (mm)	Size (mm)	Wall Thickness (mm)
20*20	1.2	7070 6080 100*40	1.8
	1.3		2
	1.4-1.5		2.2
	1.7		2.3
	1.8		2.5-4.0
	2		4.5-5.0
	2.2		5.5-5.75
	2.3	7575 6090 100*50	1.8
	2.5-2.75		2
2525 2030	1.2		2.2
	1.3		2.3
	1.5		2.5-4.0
	1.7		4.5-5.0
	1.8		5.5-5.75
	2	8080 10060 10080 12060	2
	2.3-2.3		2.2
	2.5-3.0		2.3
3030 3040 2540 2040	1		2.5-4.0
	1.2		4.5-5.0
	1.3		5.5-5.75
	1.5		7.5-7.75
	1.7	100100 12080	2
	1.8		2.2
	2		2.3
	2.2		2.5-5.0
	2.3		5.5-5.75
	2.5*2.75		7.5-7.75
	3	120120 14080 150100 16080	2.5
4040 3050 25*50	1.2		2.75
	1.3		3
	1.4-1.5		3.25-5.0
	1.7		5.5-7.0
	1.8		7.5-7.75
	2	140140 150150 200*100	3.5-4.0
	2.2-2.3		4.5-5.0
	2.5-4.0		5.25-7.0
5050 6040 3060 4050	1.5		7.5-7.75
	1.7	160160 180180	3
	1.8		3.5
	2		3.75
	2.2		4.0-5.0
	2.3		5.25-5.75
	2.5*-4.0		7.5-7.75
	4.25-5.0	6060 4080 7575 5070 50*80	2.3
6060 4080 7545 5070 50*80	1.5		2.5-4.0
	1.7		4.25-5.0
	1.8		5.5-5.75
	2		/
	2.2-2.3		/

Standard

Available Quality Standards
ASTM A500 Cold Formed Welded and Seamless Carbon Steel Steel Structural Tubing in Round and Shapes
EN 10210 Hot finished structural hollow sections of non-alloy and fine grain structural steels
EN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steels
ASTM A53 used as structural steel or for low-pressure plumbing

Standard Corner Radius(Structural Sizes:)
Max. 3 x Nominal Wall Thickness

Mechanical Sizes		Structural Sizes
Largest Nominal Outside Dimension	Outside Tolerance at all Sides at Corners	Largest Nominal Outside Dimension	Outside Tolerance at all Sides at Corners
3/16 to 5/8	± 0.004	2 1/2 and under	± 0.020
over 5/8 to 1 1/8	± 0.005	over 2 1/2 to 3 1/2	± 0.020
over 1 1/8 to 1 1/2	± 0.006	over 3 1/2 to 5 1/2	± 0.030
over 1 1/2 to 2	± 0.008	over 5 1/2	± 1%
over 2 to 3	± 0.010
over 3 to 4	± 0.020
over 4 to 6	± 0.020

Straightness
Mechanical Sizes: Max. 1/16″ in 3 feet
Structural Sizes: Max. 1/8″ x Number of feet of total length divided by 5
Wall Thickness

Mechanical & Structural Sizes: ± 10% of Nominal Wall Thickness

Squareness of Sides
Mechanical Sizes: Max: ± b = c x 0.006″
b = Tolerance for out-of-square
c = Largest external dimension across flats
Structural Sizes: Adjacent sides may deviate from 90 ° by ± 2 °
Maximum Twist (Mechanical & Structural Sizes)

Largest Dimension, inches	Max. Twist*, inches
over 1/2 to 1 1/2	0.050
over 1 1/2 to 2 1/2	0.062
over 2 1/2 to 4	0.075
over 4 to 6	0.087
over 4 to 8	0.100

Convexity & Concavity(Mechanical & Structural Sizes)

Largest Nominal O.D., Inches	Tolerance ± Inches
2 1/2 and under	± 0.010
over 2 1/2 to 4	± 0.015
over 4 to 8	± 0.025

Structural Tubing A 500 Requirements

Grades	Chemical					Physical
Grades	C Max. %	Mn Max. %	P Max. %	S Max. %	Cu Max. %	Tensile strength, min. psi	Yield strength, min. psi	Elongation in 2 in.
Grade B	0.26	/	0.04	0.05	0.20	58,000	46,000	23
Grade C	0.23	1.35	0.04	0.05	0.20	62,000	50,000	21

Painting & Coating
Bright Annealed, Black Annealed

Packing & Loading
Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips
Inspection: Chemical Component Analysis, Mechanical Properties