Mild Steel Seamless Square Rectangular Pipe Steel Tube / Steel Square Tube / Steel Tube Manufacturer
Product name | square tube |
Thickness | 0.8 - 30 mm |
Length | as required |
OD | 20*30mm-50*100mm |
Technics | Hot rolled / cold rolled |
Delivery time | 7-15 days, according to the quantity |
Terms of price | FOB,CIF |
Payment | T/T (30%T/T and 70% balance), Paypal , L/C . |
OEM/ODM | Customization Service Provided |

Product Picture
Product name | Material | Standard | Size(mm) | Application |
Low temperature tube | 16MnDG 10MnDG 09DG 09Mn2VDG 06Ni3MoDG ASTM A333 | GB/T18984- 2003 ASTM A333 | OD:8-1240* WT:1-200 | Apply to - 45 ℃ ~ 195 ℃ low temperature pressure vessel and low temperature heat exchanger pipe |
High-pressure boiler tube | 20G ASTMA106B ASTMA210A ST45.8-III | GB5310-1995 ASTM SA106 ASTM SA210 DIN17175-79 | OD:8-1240* WT:1-200 | Suitable for manufacturing high pressure boiler tube, header, steam pipe, etc |
General structure of the tube | 10#,20#,45#,27SiMn ASTM A53A,B 16Mn,Q345 | GB/T8162- 2008 GB/T17396- 1998 ASTM A53 | OD:8-1240* WT:1-200 | Apply to the general structure, engineering support, mechanical processing, etc |
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15 | 1/2” | 21.3 | 2.11 | 2.77 | 2 | 2.6 | - |
20 | 3/4” | 26.7 | 2.11 | 2.87 | 2.3 | 2.6 | 3.2 |
25 | 1” | 33.4 | 2.77 | 3.38 | 2.6 | 3.2 | 4 |
32 | 1-1/4” | 42.2 | 2.77 | 3.56 | 2.6 | 3.2 | 4 |
40 | 1-1/2” | 48.3 | 2.77 | 3.68 | 2.9 | 3.2 | 4 |
50 | 2” | 60.3 | 2.77 | 3.91 | 2.9 | 3.6 | 4.5 |
65 | 2-1/2” | 73 | 3.05 | 5.16 | 3.2 | 3.6 | 4.5 |
80 | 3” | 88.9 | 3.05 | 5.49 | 3.2 | 4 | 5 |
100 | 4” | 114.3 | 3.05 | 6.02 | 3.6 | 4.5 | 5.4 |
125 | 5” | 141.3 | 3.4 | 6.55 | - | 5 | 5.4 |
150 | 6” | 168.3 | 3.4 | 7.11 | - | 5 | 5.4 |
200 | 8” | 219.1 | 3.76 | 8.18 | - | - | - |
1.After painting, 12” and below sizes will be in hexagonal seaworthy bundles with steel strips and PVC cover sheets; 2. After painting, 14” and above sizes will be load piece by piece, and without PVC cover sheets; nesting can be made if needed.
Q1:Can you provide the samples?
A1:Samples can be provided with samples charge and courier fee by the buyer's side.
Q2:Are the products in stock?
A2:Yes.Most of our products are in stock.So we can prompt delivery.
Q3:Can you accept customize?
A3:Yes.It can be customized as per the customers' request.
Q4:What about the quality?
A4:According to the standard for production.And we can also accept the third-party inspection and quarantine.
About the After-Sale Service
1.We are glad that customers can give us some suggestions for price and products.
2.If you have any questions,pls feel free to contact us by email or phone.