| Type: | Seamless |
|---|---|
| Technique: | Cold Drawn |
| Material: | Carbon Steel |
| Usage: | Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose |
| Section Shape: | Square/Rectangular |
| Transport Package: | Standard Seaborne Packages |
| Samples: |
|---|
| Customization: |
|---|
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Seamless square tube is a long steel strip with a hollow section and no seams around it. The inside of the pipe is hollow, with a certain cross-sectional area set, and a large number of pipes are used for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water, and certain solid materials. It is also used for manufacturing structural and mechanical parts, such as petroleum drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Circular parts are made of steel pipes.
| C | Si | Mn | P | S | Cr | Ni | Cu | As | N | |
| Q195 Cr.B SS330 SPHC SPHD S185 |
≤0.12 | ≤0.3 | ≤0.5 | ≤0.35 | ≤0.04 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.08 | ≤0.008 |
| Q215 RSt34-2 1.0034 St2ps |
≤0.15 | ≤0.35 | ≤0.12 | ≤0.045 | ≤0.05 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.08 | ≤0.008 |
| SS400 1015 1.0038 Q235 RSt37-2 |
0.18-0.28 |
≤0.3 | 0.4-0.7 | ≤0.045 | ≤0.05 | ≤0.3 | ≤0.3 | ≤0.35 | - | ≤0.008 |
| SM400A Q255 A709M Gr.36 St44-2 1.0044 |
0.18-0.28 | ≤0.3 | 0.4-0.7 | ≤0.045 | ≤0.05 | ≤0.3 | ≤0.3 | ≤0.35 | - | ≤0.008 |
| Q275 U12752 SS490 K02901 S275J2G3 1.0144 |
≤0.24 | ≤0.35 | ≤1.5 | ≤0.045 | ≤0.05 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.08 | ≤0.008 |
| 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 | |
Square tube is an indispensable form of use in steel, and is generally used in steel structures, structural curtain walls, machinery manufacturing, building materials, shipbuilding airports, liquid transportation, and so on. Square tubes can be divided into seamless and welded joints through the presence or absence of seams. Seamless square tubes are formed by pressing circular tubes without seams, and can be used for liquid transmission.
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
Suppliers with verified business licenses
Audited Supplier 
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