The square tube is divided according to the production process: hot rolled seamless square tube, cold drawn seamless square tube, extruded seamless square tube, welded square tube. Among them, the welded square tube is divided into:
(a) According to the process-arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnacewelding square tube.(b) According to the weld seam-straight seam welded square tube, spiral welded square tube.
Size: 20*20mm-600*600mm, 20*40-400*600mm
Wall thickness: 1.2-20mm
Length: 3-12m
Standards: ASTM A500, EN10219, EN10210, JIS3466, GB/T6728
Materials: Gr.A, Gr.B, Gr.C, S195, S235, S355, STK400/SS400, Q195, Q235, Q345
Certifications: ISO 9001:2008, SGS, BV, CCIC and more
Marking: according to client's requirement or mill standard
Packing:
1. Packed by hexagonal seaworthy bundles packed by steel strips.
2. Small sizes nested into big sizes.
Technical: cold formed or hot rolled
Trade term: FOB, CFR, CIF, EXW, FCA
Payment term: T/T, LC
Delivery lead time: 15-45 days (based on quantity) after receiving advanced payment by T/T or LC.
Main market: Southeast Asia, South Asia, Middle East, Europe, Middle & South America, Africa and Oceania
Note:
| Square and Rectangular Steel Pipe Size Chart | ||
| Square Hollow Section | Rectangular Hollow Section | Thickness |
| 20*20 25*25 30*30 | 20*40 30*40 | 1.2-3.0 |
| 40*4050*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
| 60*60 | 50*70 40*80 | 1.2-5.75 |
| 70*70 80*80 75*75 90*90 100*100 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
| 120*120 140*140 150*150 | 160*80 100*150 140*80 100*180 200*100 | 2.5-10.0 |
| 160*160 180*180 200*200 | 200*150 250*150 | 3.5-12.0 |
| 250*250 300*300 400*200 350*350 350*300 | 250*200 300*200 350*200 350*250 450*250 400*300 500*200 | 4.5-15.75 |
| 400*400 280*280 450*300 450*200 | 400*350 400*250 500*250 500*300 400*600 | 5.0-20.0 |
1.Carbon Steel Square Tube
3.Seamless Square/Rectangular Tube
1. CAN I GET SOME SAMPLES?
Yes. We can provide samples, you need to pay the sample fee and shipping cost in advance.
We will refund the sample fee after you place your order.
Please let us know your courier account or send us your fees and we will arrange to send you a sample.
2. CAN YOU PRODUCE ACCORDING TO THE SAMPLES?
Yes, we can produce your samples or technical drawings. We can build the molds and fixtures.
3. WHAT IS YOUR TERMS OF PAYMENT?
Payment<= 1000 USD, 100% in advance.
Payment>= 1000 USD, 30% T/T in advance, balance before shipment.
If you have another question, pls feel free to contact us ASAP.
4. WHAT IS YOUR TERMS OF DELIVERY?
EXW, FOB, CFR, CIF, DDU.
5. CAN WE VISIT YOUR FACTORY?
Warmly welcome. Once we have your schedule, we will arrange for the professional sales team to follow up on your case.
6. HOW ABOUT YOUR DELIVERY TIME?
Generally speaking, 10 to 25 days after receiving your advance payment. The exact delivery time depends on the goods and quantity you ordered.
7. AFTER-SALE ADVANTAGES.
Year warranty for products; If you find any defective parts for the first time, we will provide you with new parts for free in the next order. As an experienced manufacturer, you can be assured of quality and after-sales service.
