stainless steel square steel tube

Short Description:

304 Stainless Steel Square Tube has inside and outside radius corners, with a protruding interior weld seam. Stainless Square Tube is ideal for all structural applications where greater strength and superior corrosion resistance is required. Having a durable mill finish Stainless Square Tube is widely used for all types of fabrication projects that are exposed to the elements – chemical, acidic, fresh water, and salt water environments. Some sizes are available with a 180 grit polish.

Specifications: ASTM A554, T304, Mill Finish, Not Polished
AKA: structural stainless tube, stainless box tube
Applications: frame work, braces, supports, marine, food, etc.
Workability: Easy to Weld, Moderate Cutting, Forming and Machining.
Mechanical Properties: Brinell = 170, Tensile = 85,000 +/-, Yield = 34,000 +/-,
Nonmagnetic
How is it Measured: Height(A) X Width (B) X Wall (C) X Length
Available Stock Sizes: 2ft, 4ft, 6ft, 8ft, 10ft, 20ft or Cut to Size

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Specifications

Specification	Thickness	1-5mm
	Width	10-200mm
	Length	5.8-6 Meters
Standard	ASTM A53/ASTM A573/ASTM A283/
	GB/T9711.1-1997
	DIN1629/4 DIN1629/3
Material	Q195,Q215,Q235B,Q345B,S235JR/S355JR/SS400
Finished	Black/Galvanized/Coated/Oiled/Painting,etc.
Usage	Construction, machinery manufacturing, steel construction projects, solar power support
	Steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc.
Technique	ERW Welded
Packing	Standard sea worthy packing, tied by steel strip
	Or pack as customized requirement
Country of Original	China
Main Market	Middle East,Africa,Asia,South America,Eastern Europe
MOQ	5 Tons
Productivity	500 Tons/Month
Trade & Payment	Trade:	EXW,FOB,CFR,CIF,DDP
	Payment:	≤ $8,000 T/T 100% advance
		> $8,000 T/T(30%+70%),30%T/T + 70%L/C
Further Service	Drilling/Punching
	Customized cutting size
	Customized surface process
	Bending/Welding/Decoiling

TYPE	APPLICATION
Steel Plate	Various abrasive handles and other unimportant abrasive parts, Ship building
Steel Coil	Widely used in the manufacture of general mechanical parts. Mainly used for welding structural parts with high quality requirements in construction and bridge engineering.
Steel Strip	Manufacturing process, same as steel coil
Steel Pipe	Construction, machinery manufacturing, steel construction projects, shipbuilding, solar power support, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc.
Steel Bar	Used to make cutting tools, molds and measuring tools

Chemical Composition and Physical Properites for Stainless Stee

Material	ASTM A269 Chemical Composition % Max
Material	C	Mn	P	S	Si	Cr	Ni	Mo	N B	Nb	Ti
TP304	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-11.0	^	^	^ .	^
TP304L	0.035	2.00	0.045	0.030	1.00	18.0-20.0	8.0-12.0	^	^	^	^
TP316	0.08	2.00	0.045	0.030	1.00	16.0-18.0	10.0-14.0	2.00-3.00	^	^	^
TP316L	0.035 D	2.00	0.045	0.030	1.00	16.0-18.0	10.0-15.0	2.00-3.00	^	^	^
TP321	0.08	2.00	0.045	0.030	1.00	17.0-19.0	9.0-12.0	^	^	^	5C -0.70
TP347	0.08	2.00	0.045	0.030	1.00	17.0-19.0	9.0-12.0			10C -1.10	^

Material	Heat treatment	Temperure F (C) Min.	Hardness
Material	Heat treatment	Temperure F (C) Min.	Brinell	Rockwell
TP304	Solution	1900 (1040)	192HBW/200HV	90HRB
TP304L	Solution	1900 (1040)	192HBW/200HV	90HRB
TP316	Solution	1900(1040)	192HBW/200HV	90HRB
TP316L	Solution	1900(1040)	192HBW/200HV	90HRB
TP321	Solution	1900(1040) F	192HBW/200HV	90HRB
TP347	Solution	1900(1040)	192HBW/200HV	90HRB

OD, inch	OD Tolerance inch(mm)	WT Tolerance %	Length Tolernace inch(mm)
OD, inch	OD Tolerance inch(mm)	WT Tolerance %	+	-
≤ 1 / 2	± 0.005 ( 0.13 )	± 15	1 / 8 ( 3.2 )	0
> 1 / 2 ~1 1 / 2	± 0.005(0.13)	± 10	1 / 8 (3.2)	0
> 1 1 / 2 ~< 3 1 / 2	± 0.010(0.25)	± 10	3 / 16 (4.8)	0
> 3 1 / 2 ~< 5 1 / 2	± 0.015(0.38)	± 10	3 / 16 (4.8)	0
> 5 1 / 2 ~< 8	± 0.030(0.76)	± 10	3 / 16 (4.8)	0
8~< 12	± 0.040(1.01)	± 10	3 / 16 (4.8)	0
12~< 14	± 0.050(1.26)	± 10	3 / 16 (4.8)	0