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Type:Steel Square Pipe/Square Hollow Section
Size:10*10mm-500*500mm, WT:0.5-20mm,L:0.3-18m
Standard & Grade:
EN10210:S235JRH,S355J2H,S355NG,S355J0H
EN10219:S235JRH,S355J2H,S355NG,S355J0H
ASTMA500:Gr.A,Gr.B,Gr.c
AS1163:C250,C350,C450
Surface:Black bared,can be galvanized,oiled,painted.
Packing:Waterproof plastic bag,bundled with strip
Steel Hollow Section (Square welded steel pipe)are commonly used in various industries, including construction, manufacturing, and infrastructure. They provide structural support and are often used for building frames, machinery components, fences, handrails, and architectural applications.
|
Size by Inch (diameter) |
Thickness |
Sizes by MM (diameter) |
Thickness |
|
inch |
inch |
mm |
mm |
|
1/2" x 1/2" |
0.065" |
16mm×16mm |
0.4mm～1.5mm |
|
3/4" x 3/4" |
0.049" |
18mm×18mm |
0.4mm～1.5mm |
|
0.065" |
20mm×20mm |
0.4mm～3mm |
|
|
0.083" |
22mm×22mm |
0.4mm～3mm |
|
|
0.120" |
25mm×25mm |
0.6mm～3mm |
|
|
1" x 1" |
0.049" |
30mm×30mm |
0.6mm～4mm |
|
0.058" |
32mm×32mm |
0.6mm～4mm |
|
|
0.065" |
34mm×34mm |
1mm～2mm |
|
|
0.072" |
35mm×35mm |
1mm～4mm |
|
|
0.083" |
38mm×38mm |
1mm～4mm |
|
|
0.095" |
40mm×40mm |
1mm～4.5mm |
|
|
0.109" |
44mm×44mm |
1mm～4.5mm |
|
|
0.120" |
45mm×45mm |
1mm～5mm |
|
|
1 1/8" x 1 1/8" |
0.035" |
50mm×50mm |
1mm～5mm |
|
0.049" |
52mm×52mm |
1mm～5mm |
|
|
0.065" |
60mm×60mm |
1mm～5mm |
|
|
0.109" |
70mm×70mm |
2mm～6mm |
|
|
0.120" |
75mm×75mm |
2mm～6mm |
|
|
1 1/4" x 1 1/4" |
0.049" |
76mm×76mm |
2mm～6mm |
|
0.065" |
80mm×80mm |
2mm～8mm |
|
|
0.072" |
85mm×85mm |
2mm～8mm |
|
|
0.083" |
90mm×90mm |
2mm～8mm |
|
|
0.109" |
95mm×95mm |
2mm～8mm |
|
|
0.120" |
100mm×100mm |
2mm～8mm |
|
|
0.135" |
120mm×120mm |
4mm～8mm |
|
|
0.156" |
125mm×125mm |
4mm～8mm |
|
|
0.188" |
130mm×130mm |
4mm～8mm |
|
|
1 1/2" x 1 1/2" |
0.049" |
140mm×140mm |
6mm～10mm |
|
0.065" |
150mm×150mm |
6mm～10mm |
|
|
0.072" |
160mm×160mm |
6mm～10mm |
|
|
0.083" |
180mm×180mm |
6mm～12mm |
|
|
0.109" |
200mm×200mm |
6mm～30mm |
|
|
0.120" |
220mm×220mm |
6mm～30mm |
|
|
0.140" |
250mm×250mm |
6mm～30mm |
|
|
0.188" |
270mm×270mm |
6mm～30mm |
|
|
0.250" |
280mm×280mm |
6mm～30mm |
|
|
1 3/4" x 1 3/4" |
0.065" |
300mm×300mm |
8mm～30mm |
|
0.083" |
320mm×320mm |
8mm～30mm |
|
|
0.095" |
350mm×350mm |
8mm～30mm |
|
|
0.109" |
380mm×380mm |
8mm～30mm |
|
|
0.120" |
400mm×400mm |
8mm～30mm |
|
|
0.188" |
420mm×420mm |
10mm～30mm |
|
|
2" x 2" |
0.049" |
450mm×450mm |
10mm～30mm |
|
0.065" |
480mm×480mm |
10mm～30mm |
|
|
0.083" |
500mm×500mm |
10mm～30mm |
|
|
0.109" |
550mm×550mm |
10mm～40mm |
|
|
0.120" |
600mm×600mm |
10mm～40mm |
|
|
0.145" |
700mm×700mm |
10mm～40mm |
|
|
0.165" |
800mm×800mm |
10mm～50mm |
|
|
0.188" |
900mm×900mm |
10mm～50mm |
|
|
0.250" |
1000mm×1000mm |
10mm～50mm |
|
|
0.312" |
|
|
|
|
2 1/4" x 2 1/4" |
0.188" |
|
|
|
0.250" |
|
|
|
|
2 1/2" x 2 1/2" |
0.083" |
|
|
|
0.109" |
|
|
|
|
0.120" |
|
|
|
|
0.188" |
|
|
|
|
0.250" |
|
|
|
|
0.312" |
|
|
Dimensional Tolerances of square welded pipe
|
Dimensional Tolerances |
|||
|
Outside Diameter: |
Twist: |
Maximum twist per 3 feet of length |
|
|
Largest outside dimension |
Outside tolerance including convexity and concavity |
Longest outside dimension |
|
|
up to 2 1/2" |
±.020" |
2" to 2 1/2"inclusive |
.062" |
|
over 21/2" to 31/2" inclusive |
±.025" |
over 21/2" to 4" inclusive |
.075" |
|
over 31/2" to 51/2" inclusive |
±.030" |
over 4" to 6" inclusive |
.087" |
|
over 51/2" |
±1% |
over 6" to 8" inclusive |
100" |
|
Tolerances include allowance for convexity or concavity. For |
over 8" |
112" |
|
|
Straightness: |
|||
|
.125" x (total length) ÷ 5 |
|||
|
Wall Thickness: |
Squareness of Sides: |
||
|
Maximum allowable variation |
±10% |
Adjacent sides may deviate from 90° by a tolerance of plus or minus 2 degrees maximum. |
|
|
(wall thickness is to be measured at the center of the flat, exclusive |
|||
|
Worner Radii: |
Flash: |
||
|
The radius of any outside corner shal not exceed three times |
Structural tubing usually is supplied flash-in. The height of the |
||
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Main Product:
Seamless Steel Pipe,
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Casing and Tubing,
Carbon Steel Pipe,
Stainless Steel Pipe ,
Alloy Steel Pipe
