Introduce
Seamless rectangular steel pipe is a square, rectangular steel pipe with a hollow section and no seams around it. Seamless steel pipes are made from steel ingots or solid tube blanks that are perforated into tubes, and then hot rolled, cold rolled, or cold drawn. Seamless steel pipes have a hollow cross-section and are widely used as pipelines for conveying fluids. Compared to solid steels such as round steel, steel pipes have a lower weight and the same flexural and torsional strength. They are a type of economical cross-section steel, and are widely used in the manufacture of structural and mechanical components such as petroleum drill pipes, automotive transmission shafts, bicycle racks, and steel scaffolds used in construction
Chemical composition
component |
C |
Mn |
P |
S |
Cu |
minimum value |
0.28 |
0.6 |
- |
- |
- |
minimum value |
0.34 |
0.9 |
0.04 |
0.05 |
0.2 |
Product Description
seamless square steel pipe |
Size |
Outside Diameter |
Wall Thickness |
50x50-1000x1000mm |
5-20mmmm |
Tolerace |
+/-5% |
+/-5% |
Standard |
GB |
GB/T 8162 GB/T 8163 etc. |
DIN |
10#(ST37-2,ST35-8),20#(ST42,ST45-4/8),45#(DINCK45) |
JIS |
10#(STPG38,STS38,),20#(STPG42)45#(JIS S45C) |
ASTM/AISI |
10# /20#(ASTM a106/53 Gr.B ),45#(AISI1045) |
Length |
1-12m, or require by clients |
Method |
cold drawing, hot rolling or hot expanding |
Min order |
5 tons, more quantity price will be lower |
Surface |
Galvanized, 3PE, painting, coating oil, steel stamp, drilling, etc |
Ends |
Plain ends, cutting, threading, beveled, flange, etc |
classification:
Square tubes are divided into:
Hot rolled seamless square tubes, cold drawn seamless square tubes, extruded seamless square tubes, welded square tubes
Square tubes are divided by surface treatment:
Hot-dip galvanized square tubes, electrogalvanized square tubes, oiled square tubes, and pickled square tubes
Square tubes are classified by wall thickness:
Ultra thick wall square tube, thick wall square tube, thin wall square tube
Application
The uses of square tubes include construction, machinery manufacturing, steel construction, and other projects, shipbuilding, solar power generation support, steel structural engineering, electrical engineering, power plants, agricultural and chemical machinery glass curtain walls, automotive chassis, airports, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery, and other welding structures with high loads.
Cold drawn seamless square rectangular tube has a good appearance, precise dimensions, flat surface, high density, high strength, wear resistance, corrosion resistance, impact resistance, good impact resistance, compact structure, uniform plating thickness, strong adhesion, wear durability, and can be used for a long time.
Product Parameters
Out Diameter |
Wall Thickness |
Square Pipe/Tube(mm) |
Rectangular Pipe/Tube(mm) |
Inch |
mm |
mm |
16×16×0.4~1.5 |
70×70×2.0~6.0 |
10×20×0.6~1.5 |
30×60×1.0~4.5 |
1/2 |
21.3 |
0.6-3.0 |
18×18×0.4~1.5 |
75×75×2.0~6.0 |
14×21×0.6~1.5 |
40×50×1.0~4.5 |
3/4 |
26.9 |
0.6-3.0 |
20×20×0.4~1.5 |
80×80×2.0~6.0 |
15×30×1.5~1.5 |
40×60×1.0~5.0 |
1 |
33.4 |
1.0-3.0 |
25×25×0.6~2.0 |
85×85×2.0~6.0 |
15×38×0.6~1.5 |
40×80×1.5~5.0 |
1 1/4 |
42.3 |
1.0-4.0 |
30×30×0.6~4.0 |
95×95×2.0~8.0 |
20×30×0.6~2.0 |
40×100×2.0~5.0 |
1 1/2 |
48.3 |
1.0-4.0 |
34×34×1.0~2.0 |
100×100×2.0~8.0 |
20×40×0.8~2.0 |
50×60×2.0~5.0 |
2 |
60.3 |
1.5-4.0 |
35×35×1.0~4.0 |
120×120×4.0~8.0 |
20×50×1.0~2.0 |
50×80×2.0~5.0 |
2 1/2 |
76.1 |
1.5-4.0 |
38×38×1.0~4.0 |
150×150×6.0~10.0 |
22×35×0.9~2.0 |
50×100×2.0~8.0 |
3 |
88.9 |
1.5-9.5 |
40×40×1.0~4.5 |
180×180×6.0~12.0 |
25×40×0.9~3.75 |
60×80×2.0~6.0 |
4 |
114.3 |
2.0-9.5 |
44×44×1.0~4.5 |
200×200×6.0~12.0 |
25×65×1.0~2.0 |
80×100×2.0~8.0 |
5 |
141.3 |
3.0-9.5 |
45×45×1.0~5.0 |
220×220×6.0~14.0 |
30×40×1.0~3.75 |
120×60×2.5~10.0 |
6 |
168.3 |
3.0-12.0 |
50×50×1.0~5.0 |
250×250×6.0~14.0 |
30×45×1.0~3.75 |
120×80×2.5~10.0 |
8 |
219.1 |
3.2-12.0 |
60×60×1.5~5.0 |
|
30×50×1.0~4.0 |
|
10 |
273 |
3.2-12.0 |
|
|
|
|
12 |
323.8 |
6.0-15.0 |
|
|
|
|
14 |
355.6 |
8.0-15.0 |
|
|
|
|
16 |
406.4 |
8.0-20.0 |
|
|
|
|
Packaging and delivery of square and rectangular hollow section pipes and steel pipes:
1. OD 300mm and below is packed with hexagonal maritime binding tape and steel tape, with two nylon slings for each bundle
2. Bulk with OD above 300mm or according to customer comments
Trial order of 25 tons/container and 5 tons/size;
4. The maximum length of a 20 "container is 5.8 m;
5. The maximum length of a 40 "container is 11.8m.
FAQ
1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawin