HSS Hollow Structural Section Stainless Steel Tube Square Tubes
Product Description:
Stainless steel square tube and rectangular tube is commonly referred to as tube steel or structural tubing. These are also referenced as a hollow structural section or HSS for short. Used for structural purposes, square tube, rectangular tube, I beams, etc., can be purchased in many different types of steel and alloys. Manufacturing of square tube is the same as the manufacturing process of pipe but the product goes through a series of shaping stands, meeting its final square specifications.
| Name | Stainless Steel Tubes |
| Certificate | SGS,ISO,BV |
| Surface | 2B,BA(bright annealed) NO.1 NO.2 NO.3 NO.4,8K HL(Hair Line) PVC |
| Thickness | 0.2/0.3/0.4/0.5/0.6/0.7/0.8/0.9/1/2/3/4/5/6/7/8/9mm... |
| Width | 10/20/30/40/50/60/70/80/90/100/200/300/400/500/600/700/800mm.. |
| Length | 1/2/3/4/5/6/7/8/9/10/20/30/40/50m... |
| Grade | 201/202/303/304/304ji/304L/309s/310s/316/316L/316Ti/409/410/430/904L.etc |
| Delivery | 15-20 days after the deposit or LC. |
| Payment | T/T, L/C at sight, Western union,Paypal.etc |
| Sample | Free samples always but freight should be collected at your side. |
| Feature | Stable quality with reasonable price. |
| Good shaping capability,weld bending capability,high thermal conductivity,low thermal expansion with our 7x24 after-sales service |
| Shipment | Three days for samples and 7 days for batch production. |
Stainless Steel Grade Chart:
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| 201 | ≤0 .15 | ≤0 .75 | 5. 5-7. 5 | ≤0.06 | ≤ 0.03 | 3.5 -5.5 | 16 .0 -18.0 | - |
| 202 | ≤0 .15 | ≤l.0 | 7.5-10.0 | ≤0.06 | ≤ 0.03 | 4.0-6.0 | 17.0-19.0 | - |
| 301 | ≤0 .15 | ≤l.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 6.0-8.0 | 16.0-18.0 | - |
| 302 | ≤0 .15 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 8.0-10.0 | 17.0-19.0 | - |
| 304 | ≤0 .0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 8.0-10.5 | 18.0-20.0 | - |
| 304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.0-13.0 | 18.0-20.0 | - |
| 309S | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 12.0-15.0 | 22.0-24.0 | - |
| 310S | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.035 | ≤ 0.03 | 19.0-22.0 | 24.0-26.0 | |
| 316 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 |
| 316L | ≤0 .03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 12.0 - 15.0 | 16 .0 -1 8.0 | 2.0 -3.0 |
| 321 | ≤ 0 .08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.0 - 13 .0 | 17.0 -1 9.0 | - |
| 630 | ≤ 0 .07 | ≤1.0 | ≤1.0 | ≤0.035 | ≤ 0.03 | 3.0-5.0 | 15.5-17.5 | - |
| 631 | ≤0.09 | ≤1.0 | ≤1.0 | ≤0.030 | ≤0.035 | 6.50-7.75 | 16.0-18.0 | - |
| 904L | ≤ 2 .0 | ≤0.045 | ≤1.0 | ≤0.035 | - | 23.0·28.0 | 19.0-23.0 | 4.0-5.0 |
| 2205 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.030 | ≤0.02 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 |
| 2507 | ≤0.03 | ≤0.8 | ≤1.2 | ≤0.035 | ≤0.02 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 |
| 2520 | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.045 | ≤ 0.03 | 0.19 -0. 22 | 0. 24 -0 . 26 | - |
| 410 | ≤0.15 | ≤1.0 | ≤1.0 | ≤0.035 | ≤ 0.03 | - | 11.5-13.5 | - |
| 430 | ≤0.1 2 | ≤0.75 | ≤1.0 | ≤ 0.040 | ≤ 0.03 | ≤0.60 | 16.0 -18.0 | - |
Stainless Steel Square Hollow Section sizes:
| Size (mm) | Thick ness (mm) | Kg / Metre | Size (mm) | Thick ness (mm) | Kg / Metre | Size (mm) | Thick ness (mm) | Kg / Metre | Size (mm) | Thick ness (mm) | Kg / Metre | Size (mm) | Thick ness (mm) | Kg / Metre | Size (mm) | Thick ness (mm) | Kg / Metre |
| 20 X 20 | 2 | 1.11 | 60 X 60 | 3 | 5.34 | 80 X 80 | 8 | 17.83 | 120 X 120 | 5 | 18.00 | 160 X 160 | 10 | 46.88 | 250 X 250 | 16 | 111.48 |
| 25 X 25 | 2 | 1.43 | 60 X 60 | 3.2 | 5.67 | 80 X 80 | 10 | 21.88 | 120 X 120 | 6 | 21.30 | 180 X 180 | 5 | 27.97 | 300 X 300 | 6 | 55.30 |
| 25 X 25 | 2.5 | 1.74 | 60 X 60 | 3.6 | 6.34 | 90 X 90 | 3 | 8.16 | 120 X 120 | 6.3 | 22.30 | 180 X 180 | 6 | 33.26 | 300 X 300 | 8 | 74.18 |
| 25 X 25 | 3 | 2.04 | 60 X 60 | 4 | 6.97 | 90 X 90 | 3.5 | 9.45 | 120 X 120 | 8 | 27.90 | 180 X 180 | 8 | 43.00 | 300 X 300 | 10 | 90.70 |
| 30 X 30 | 2 | 1.74 | 60 X 60 | 5 | 8.54 | 90 X 90 | 3.6 | 9.72 | 120 X 120 | 10 | 34.13 | 180 X 180 | 10 | 53.00 | 300 X 300 | 12 | 108.68 |
| 30 X 30 | 2.5 | 2.14 | 70 X 70 | 2.5 | 5.28 | 90 X 90 | 4 | 10.70 | 120 X 120 | 12 | 39.94 | 180 X 180 | 12 | 61.01 | 300 X 300 | 12.5 | 112.00 |
| 30 X 30 | 3 | 2.51 | 70 X 70 | 3 | 6.28 | 90 X 90 | 5 | 13.30 | 120 X 120 | 16 | 54.64 | 180 X 180 | 12.5 | 65.20 | 300 X 300 | 16 | 141.84 |
| 30 X 30 | 3.2 | 2.65 | 70 X 70 | 3.5 | 7.25 | 90 X 90 | 6 | 15.70 | 140 X 140 | 6 | 25.97 | 180 X 180 | 16 | 81.30 | 350 X 350 | 10 | 105.93 |
| 40 X 40 | 2 | 2.37 | 70 X 70 | 3.6 | 7.46 | 90 X 90 | 6.3 | 16.40 | 140 X 140 | 8 | 32.89 | 200 X 200 | 5 | 31.18 | 350 X 350 | 12 | 126.74 |
| 40 X 40 | 2.5 | 2.92 | 70 X 70 | 4 | 8.23 | 90 X 90 | 8 | 20.32 | 140 X 140 | 10 | 41.15 | 200 X 200 | 6 | 37.09 | 350 X 350 | 16 | 166.94 |
| 40 X 40 | 3 | 3.45 | 70 X 70 | 5 | 10.10 | 90 X 90 | 10 | 25.53 | 150 X 150 | 4 | 18.30 | 200 X 200 | 8 | 48.00 | 400 X 400 | 8 | 97.56 |
| 40 X 40 | 4 | 4.46 | 70 X 70 | 8 | 15.29 | 100 X 100 | 3 | 9.10 | 150 X 150 | 5 | 22.70 | 200 X 200 | 10 | 59.30 | 400 X 400 | 10 | 121.95 |
| 40 X 40 | 5 | 5.40 | 70 X 70 | 10 | 19.13 | 100 X 100 | 4 | 12.00 | 150 X 150 | 6 | 27.00 | 200 X 200 | 12 | 68.84 | 400 X 400 | 12 | 151.97 |
| 50 X 50 | 2 | 3.00 | 80 X 80 | 3 | 7.22 | 100 X 100 | 5 | 14.80 | 150 X 150 | 6.3 | 28.30 | 200 X 200 | 12.5 | 73.00 | 400 X 400 | 16 | 191.94 |
| 50 X 50 | 2.5 | 3.71 | 80 X 80 | 3.5 | 8.35 | 100 X 100 | 6 | 17.60 | 150 X 150 | 8 | 35.40 | 200 X 200 | 16 | 90.91 | | | |
| 50 X 50 | 3 | 4.39 | 80 X 80 | 3.6 | 8.59 | 100 X 100 | 6.3 | 18.40 | 150 X 150 | 10 | 43.47 | 250 X 250 | 6 | 46.83 | | | |
| 50 X 50 | 4 | 5.72 | 80 X 80 | 4 | 9.48 | 100 X 100 | 8 | 22.90 | 150 X 150 | 12 | 53.48 | 250 X 250 | 8 | 60.50 | | | |
| 50 X 50 | 5 | 6.97 | 80 X 80 | 5 | 11.70 | 100 X 100 | 10 | 27.86 | 150 X 150 | 16 | 65.05 | 250 X 250 | 10 | 75.00 | | | |
| 50 X 50 | 6 | 8.20 | 80 X 80 | 6 | 13.80 | 100 X 100 | 12 | 33.44 | 160 X 160 | 6 | 27.39 | 250 X 250 | 12 | 88.45 | | | |
| 50 X 50 | 8 | 10.50 | 80 X 80 | 6.3 | 14.40 | 120 X 120 | 4 | 14.50 | 160 X 160 | 8 | 36.90 | 250 X 250 | 12.5 | 92.70 | | | |
Packing and shipping:
FAQ:
Q1: Are you a trader or manufacturer?
A1: We are the professional manufacturer with 16 years experience, located in Wuxi City which is a famous stainless steel production base. Welcome to our factory before you place order.
Q2: What is your major market?
A2: 95% of our tubes export. We mainly sell to America, Canada, Australia, Japan, Russia, Germany, France, Dubai, Brazil, Chile, India, Thailand, South Africa, Egypt, Nigeria, etc.
Q3: What's the annual output?
A3: We can produce more than 31,000 tons stainless steel tubes in a year.
Q4: What is your welding method?
A4: All of our tubes are welded by TIG welding methods. Our tubes can get fully welding and smooth inner welding, without blisters, leak welding or black line. All of our tube are good for tube bending.
Q5: How do you control the quality during the polishing process?
A5: 1)As for the mirror polish square/rectangular tube, we will polish it as least four times.
2)During the polishing processing, we set a special sanding wheel to polish the welding part.
3)To avoid scratches, after polishing, the tubes will be lay out on a steel crate then we could lift the whole steel crate instead of the tube.
4)On the other hand, we use the gunny bags to protect the tube's surface when the tube laying-out.
Q6: How do you inspect the tubes?
A6: The Quality inspectors inspect the tubes during each production processes from raw material, tube welding, polishing, packaging.
1) Before the production of each machine, we will have the first checked and record the data.
2) During the production, our inspector and engineer have been carefully moniting and we record the data every two hours.
Q7: What is the MOQ?
A7: 3tons.
Q8: What’s the delivery time for the tubes normally in your company?
A8: 20-30 days for 1-4 containers base on the how many items.
Q9: What payment terms you can deal with?
A9: Mostly we deal with TT terms and L/C,for L/C we need to know which bank to open the L/C and after checking the bank information to decide whether to accpet the L/C.If you have other preference, please negotiate.
Q10: Could you print our company logo or information on the tubes plastic bag and the outside package also?Is there extra cost for it?
A10: We can follow customer’s request to print your own information plastic bag for quantity at least 1 container(22-26 tons), and we won’t charge the extra cost.
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