Square rectangular pipe is a name for square pipe and rectangular pipe, that is, steel pipes with equal and unequal side lengths. It is made of strip steel by processing and rolling. Generally, the strip is unpacked, flat, crimped, welded to form a round tube, which is then rolled into a square tube and cut to the required length.
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item
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value
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Alloy Or Not
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Non-Alloy
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Section Shape
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Round
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Special Pipe
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API Pipe, EMT Pipe, Thick Wall Pipe
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Thickness
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0.6 - 12 mm
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Standard
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AiSi, ASTM, bs, DIN, GB
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Technique
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ERW
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Grade
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201/304/304L/316/316L/430 Stainless Steel Sheet
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Surface Treatment
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Pickling, Polished, Hairline, Mirror, Matte
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Tolerance
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±1%
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Processing Service
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Welding, Punching, Cutting, Bending, Decoiling
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Oiled or Non-oiled
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Non-oiled
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Invoicing
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by actual weight
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Delivery Time
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8-14 days
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Grade
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GR.A /GR.B/X42/X52/J55
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OD
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48mm-3200mm
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Length
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5.8m/ 6m /11.8m/ 12m/ DRL
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Material
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Q195-Q345, 10#-45#
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Technique
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Cold Rolled, Hot Rolled, ERW
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Application
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Widely used in furniture
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Payment terms
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30% T/T deposit in advance
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Shape
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Round, Square, Rectangle
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Standard:
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EN, BS, JIS, etc
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Surface
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Black Painted
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Process classification
Square pipe according to the production process: hot rolled seamless square pipe, cold drawn seamless square pipe, extrusion seamless square pipe, welded square pipe.
Which welded square pipe is divided into
1, according to the process - arc welded square tube, resistance welded square tube (high frequency, low frequency), gas welded square tube, furnace welded square tube
2, according to the weld points - straight seam welded square pipe, spiral welded square pipe.
Material classification
Square pipe according to the material: ordinary carbon steel square pipe, low alloy square pipe.
1, general carbon steel is divided into: Q195, Q215, Q235, SS400, 20# steel, 45# steel, etc.
2, low alloy steel is divided into: Q345, 16Mn, Q390, ST52-3 and so on.
Production standard classification
Square pipe according to production standards: national standard square pipe, Japanese standard square pipe, British square pipe, American standard square pipe, European standard square pipe, non-standard square pipe.
Section shape classification
The square pipe is classified by section shape:
1, simple section square tube: square square tube, rectangular square tube.
2, complex section square tube: flower square tube, open square tube, corrugated square tube, shaped square tube.
Surface treatment classification
Square pipe according to surface treatment: hot galvanized square pipe, electric galvanized square pipe, oil square pipe, pickling square pipe.
Use classification
The square pipe is classified by use: decorative square pipe, machine tool equipment square pipe, mechanical industry square pipe, chemical square pipe, steel structure square pipe, shipbuilding square pipe, automobile square pipe, steel beam column square pipe, special purpose square pipe.
Wall thickness classification
Square tubes are classified according to wall thickness: super thick wall square tubes, thick wall square tubes and thin wall square tubes.
Galvanized square tube
Surface is hot-dip plated or galvanized layer welded steel pipe. Hot-dip galvanizing can increase the
corrosion resistance of steel pipes and prolong the service life. Galvanized square tube is widely used, in addition to water,
gas, oil and other general low-pressure fluid pipeline, but also for the oil industry, especially offshore oil wells, pipeline,
Pipe with the tube, as well as the bridge bridge pile, mine tunnel support frame with the tube.
The galvanized square tube is an alloy layer produced by the reaction of the molten metal with the iron matrix, so that both the
substrate and the plating layer are combined. Hot-dip galvanizing is the first pickling of the steel pipe, in order to remove the
iron oxide surface of the steel pipe, pickled, through ammonium chloride or zinc chloride water solution or ammonium chloride and
zinc chloride mixed aqueous solution And then into the hot-dip plating tank. Often used galvanized pipe, galvanized pipe is used
in the gas, heating with the kind of iron pipe is galvanized pipe, galvanized pipe as a water pipe in the use of a few years
later, the tube will produce a lot of rust, The sanitary ware, and mixed with non-smooth inner wall of the bacteria, rust caused
by high levels of heavy metals in the water and thus seriously endanger human health. But the hot galvanized pipe is a very
uniform coating, strong adhesion, the use of long life and other advantages.
Application: Widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration and steel structure fields. Used in engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, home appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouses, bicycle racks, motorcycle racks, shelves, fitness equipment, leisure and tourism supplies, steel furniture, various specifications of oil casing, oil pipes and pipelines, water, gas, sewage, air, mining Warm and other fluid transport, fire and support, construction, etc.
| Product name |
Steel Hollow Section Square Rectangular Tube |
| Material |
S275J0H,S355JR,S355J0H,S355J2H,A36,SS400,Q195,Q235,Q345 |
| Surface treatment |
Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted, Threaded, Engraved, Socket. |
| Shape |
square or rectangular or round |
| Thickness |
1.2-20mm |
| Length |
3-12M according to client requirement |
| OD(outer diameter) |
Square 10*10-1000*1000mm
Rectangular:10*15 800*1100mm
Round:10.3mm-609mm |
| Technology |
ERW,LSAW,SSAW,Seamless |
| Packing |
1.Big OD:in bulk
2.Small OD:packed by steel strips
3.woven cloth with 7 slats
4.according to the requirements of customers |
| MOQ |
5 Tons |
| Brand |
HJ |
| Standards |
BS1139-1775, EN1039, EN10219, JIS G3444:2004, GB/T3091-2001, BS1387-1985, DIN EN10025, ASTM A53 SCH40/80/STD, BS-EN10255-2004 |
| Main Market |
Middle East,Africa, Asia and some Uropean country and South America, Australia |
| Delivery Time |
Fast delivery ,within 10 days after receiving the deposit |
| Remark |
1. Payment terms : T/T ,L/C
2. Terms of trade : FOB ,CFR,CIF ,DDP,EXW
3. Minimum order : 2 tons
4. Delivery time : Within 25 days. |
| Size(mm) |
Thickness(mm) |
Size(mm) |
Thickness(mm) |
Size(mm) |
Thickness (mm) |
Size(mm) |
Thickness (mm) |
20*20 |
1.0 |
60*60
50*70
40*80
50*80
70*70
60*80
100*40 |
1.3 |
120*120
140*80
160*80
75*150
100*150
160*60 |
2.5-2.75 |
33*450
300*500
400*400 |
4.5-5.75 |
| 1.3 |
1.4 |
3.0-4.0 |
7.5-11.75 |
| 1.4 |
1.5 |
4.25-4.75 |
12.5-13.75 |
| 1.5 |
1.7 |
5.25-6.0 |
14.5-14.75 |
| 1.7 |
1.8 |
6.5-7.75 |
15.5-17.75 |
| 2.0 |
2.0 |
9.5-15 |
450*450
200*600
300*600
400*500
400*600
500*500 |
4.5-4.75 |
25*25
20*30 |
1.3 |
2.2 |
130*130
80*180
140*140
150*150
200*100 |
2.5-2.75 |
7.5-7.75 |
| 1.4 |
2.5-4.0 |
3.0-3.25 |
9.5-9.75 |
| 1.5 |
4.25-5.0 |
3.5-4.25 |
11.5-13.75 |
| 1.7 |
5.25-6.0 |
4.5-9.25 |
14.5-15.75 |
| 1.8 |
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9.5-15 |
16.5-17.75 |
| 2.0 |
90*90
75*75
80*80
60*90
60*100
50*100
60*120
50*120
80*100 |
1.3 |
160*160
180*180
250*100
200*150 |
2.5-2.75 |
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| 2.2 |
1.5 |
3.5-5.0 |
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| 2.5-3.0 |
1.7 |
5.25-7.75 |
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30*30
20*40
30*40
25*40 |
1.3 |
1.8 |
9.5-15 |
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| 1.4 |
2.0 |
150*250
100*300
150*300
200*200
135*135 |
2.75 |
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| 1.5 |
2.2 |
3.0-3.25 |
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| 1.7 |
2.5-4.0 |
3.5-7.75 |
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| 1.8 |
4.25-5.0 |
9.5-12.5 |
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| 2.0 |
5.25-5.75 |
12.75-15.75 |
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| 2.2 |
7.5-7.75 |
200*300
250*250
100*400
200*250 |
3.52-3.75 |
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| 2.5-3.0 |
100*100
80*120
125*75
140*60
50*150 |
1.5 |
4.5-11.75 |
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25*50
40*40
30*50
30*60
40*50
40*60
50*50 |
1.3 |
1.7 |
12.5-14.75 |
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| 1.4 |
1.8 |
15.5-17.75 |
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| 1.5 |
2.0 |
200*350
200*400
300*300
250*350 |
4.75-7.75 |
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| 1.7 |
2.2 |
9.5-11.75 |
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| 1.8 |
2.5-5.0 |
12.5-14.75 |
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| 2.0 |
5.25-6.0 |
15.5-17.75 |
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| 2.2 |
6.5-7.75 |
300*350
300*400
350*350
250*450 |
4.75-7.75 |
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| 2.5-4.0 |
9.5-13 |
9.5-11.75 |
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| 4.25-5.0 |
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12.5-14.75 |
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Q1: What's your terms of payment?
A: 30%T/T as the upfront deposit, 70% before delivery, We will show you the photos and package before you pay the balance.
Q2: What's the terms of delivery?
A: EXW, FOB, CFR, CIF
Q3: What's the terms of packing?
A: Generally,we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirement.
Q4: What's your delivery time?
A: For stocks, we could transport the goods to loading port within 7 work days after we received the deposit.For productionperiod,
it usually takes about 15 days to 30 days after we received the deposit.
Q5: Could you produce according to the samples?
A: Yes, we can customer-made by your samples or technique drawings, we can build the mold and fixtures.
Q6: Could youprovide the compliment samples?
A: Yes, we could provide the free samples on condition that it is available in stocks, however,the transportation fee is borne by
buyer.
Q7: How could you guarantee your products quality?
A: Each piece of products is manufactured by certified workshops, inspected by us piece by piece according to national QA/QC
standard. We also could issue the warranty to customer to guarantee the quality.
Q8:What are the advantages of your company?
A:(1): Prime quality and reasonable price.
(2): Wide excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Trial order can be done in one week.
(6): Samples can be provided as your requirements.
Audited Supplier 
Audited Supplier 
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