Product Description:
What is welded square steel pipe?
Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal arc) welding. Before welding two pipes together, avoid any gaps between the two pipes. While welding, take measures to ensure the continual alignment of the two pipes.              Â
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OD mm |
WT mm |
OD mm |
WT mm |
OD mm |
WT mm |
OD mm |
WT mm |
OD mm |
WT mm |
20x20 |
1.0-3.0 |
130x30 |
2.5-12 |
20x30 |
1.0-3.0 |
50x80 |
1.5-6.0 |
100x150 |
2.5-12 |
25x25 |
1.0-3.0 |
140x140 |
2.5-12 |
20x40 |
1.0-3.0 |
50x90 |
1.5-6.0 |
100x200 |
2.5-12 |
30x30 |
1.0-3.0 |
150x150 |
2.5-12 |
25x40 |
1.0-3.0 |
50x100 |
1.5-6.0 |
100x250 |
2.5-12 |
40x40 |
1.0-5.0 |
160x160 |
2.5-12 |
30x40 |
1.0-3.0 |
50x120 |
1.5-6.0 |
100x300 |
2.5-12 |
50x50 |
1.0-5.0 |
180x180 |
2.5-12 |
30x50 |
1.0-3.0 |
60x80 |
1.5-6.0 |
100x400 |
2.5-12 |
60x60 |
1.0-5.0 |
200x200 |
3.0-12 |
30x60 |
1.0-3.0 |
60x90 |
1.5-6.0 |
150x200 |
2.5-12 |
70x70 |
1.0-5.0 |
220x220 |
3.5-12 |
40x50 |
1.0-3.0 |
60x100 |
1.5-6.0 |
150x250 |
3.0-12 |
80x80 |
1.0-5.0 |
250x250 |
4.0-12 |
40x60 |
1.0-3.0 |
60x120 |
1.5-6.0 |
150x300 |
3.0-12 |
90x90 |
1.0-6.0 |
300x300 |
1.5-12 |
40x80 |
1.0-3.0 |
75x125 |
1.5-6.0 |
200x300 |
4.5-12 |
100x100 |
1.0-6.0 |
400x400 |
6.0-12 |
40x100 |
1.0-6.0 |
80x100 |
1.5-6.0 |
200x400 |
4.5-12 |
120x120 |
1.0-6.0 |
500x500 |
6.0-12 |
50x70 |
1.0-6.0 |
80x120 |
1.5-6.0 |
300x400 |
4.5-12 |
Material list
Elements |
Chemical Composition% |
Mechanical Property |
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Material |
C% |
Mn% |
S% |
P% |
Si% |
Yield Point |
Tensile Strength |
Elongation |
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(Mpa) |
(Mpa) |
(%) |
Q195 |
0.06-0.12 |
0.25-0.50 |
<0.05 |
<0.045 |
<0.3 |
>195 |
315-430 |
32-33 |
Q235 |
0.12-0.2 |
0.30-0.70 |
<0.045 |
<0.045 |
<0.3 |
>235 |
375-500 |
24-26 |
Q345 |
<0.20 |
1.0-1.6 |
<0.04 |
<0.04 |
<0.55 |
>345 |
470-630 |
21-22 |
Product Photos:
Our production process & Quality control:
Packing ang Loading:
Related products:
Our Services:
1. Production capacity : more than 50000 tons per month.
2.  Have an competitive price and high quality.
3.  Excellent after-sale service.
4.  Free issue:packaging list,invoice,Certificate of Origin. 5.  Powerful technology team,Strict quality assurance system and perfect testing means.
6. Delivery on time.
7. Export to Middle East,Africa,Russia,Southeast Asia, etc.
8. Have the most convenient transport and prompt delivery.
9. Have high technical production line with top quality products.
10. Have win high reputation based on best quality products.
Company Show:
Jiangyin JingMai Metal Products Co., Ltd. is located in JiangYin city, the top 10 county in China. Company main: Medium thickness plate, hot rolled coil plate, open plate, industrial Angle slot H shape steel, zero cut, big mouth seam welding tube, thick wall welded tube, square rectangular welded pipe, taper pipe, u-shaped steel. All the sales products of the company can be customized.
Q: What kind of work does your company do?
A:Â Â Our company supplies different kinds of products like steel pipe, steel plate, steel sheet .
Q: How can you assure your quality?
A:We can provide you certificate of quality accordingly.
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Q: Can you accept customization?
A:Yes. If you have special requirements for products, styles or specifications, we can make them for you
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Q:Can you accept trail orders?
A:Our MOQ is 1 ton.But if you want to place a trail order as the beginning of ourcooperation , we can accept smaller quantity at frist . Surely we will have further and longer partnership after the beginning.
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Q:Can you provide samples for checking before order?
A:Free samples can be provided as you required. You need only to bear the freight cost.
Contact us:
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Plastics Pigment, Plastic Antioxidant, Plastics Organic Pigment, Plastics Solvent Dyes, Calcium Acetylacetonate (CAS No.19372-44-2)
Dynasty Chemicals (NingBo) Co., Ltd. , http://www.dychemco.com