Square Steel Pipe from Okorder in China with High Quality

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
1111 m.t./month

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Product Description:

1. Structure of Square Steel Pipe Description: 

    The square Steel pipes are used in structural projects, shelves, racks, trailers and in ornamental purpose. The framework made by square steel tubes, is used for providing support to the roof. This framework is also used as roof top ventilation baffles. With compare to round steel pipes, square steel pipes are little more efficient. The reason is that the square column is more efficient than the solid circular column.


2. Main Features of the  Square Steel Pipe: 

·Prompt delivery

·Time-saving 
·High quality 

·Competitive price 


3. Square Steel Pipe Images: 



 


4、Square Steel Pipe Specification: 

Standard

JIS,GB,DIN,ASTM

JIS G3466, GB/T 3094-2000, DIN EN 10216-1-2004, ASTM A513-2007

Grade 

Cr-Mo alloy, 16Mn, A53-A369, Q195-Q345

30CrMo, 16Mn, A106(B,C), Q235, Q345, Q195, Q215

Thickness0.5 - 30 mm
Outer  Diameter10x10---600x600
TechniqueCold Drawn
ApplicationStructure Pipe
Certification
ISO9001
Surface TreatmentGalvanized


Cold rolled square pipe:

1) Size: different sizes according to customers' requirement
2) Grade: many different kinds of materials.

3) Standard: GB50205-2001, JIS, ASTM and EN
4) Detailed requirement please feel free to contact

5)Specification:GB6728,DIN,JIS,ASTM-A500

6).Grade:Q195,Q235,Q345,ST37-2,ST52-3,SS400,SS355


Length: 5.8m, 6m, 12m

size

thickness

15*15

0.6—1.2

18*18

0.6—1.5

19*19

0.6—1.5

20*20

0.6—1.5

25*25

0.7—1.5

30*30

0.6—2.0

32*32

0.7—3.0

38*38

0.6—2.0

40*40

0.7—3.0

45*45

0.6—2.0

50*50

0.8—3.0

60*60

0.8—4.0

75*75

1.4—3.75

80*80

1.4—4.0

100*100

1.2—6.0

110*110

4.0—8.0

120*120

4.0—8.0

130*130

4.0—8.0

140*140

4.0—8.0

150*150

4.0—8.0

160*160

4.0—8.0

170*170

4.0—8.0

180*180

4.0—8.0

190*190

4.0—10.0

200*200

4.0—10.0

 

 

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Q:What is the difference between hot dip galvanized steel pipe and galvanized steel pipe?
The difference between the process is that the hot dip galvanized pipe is dipped in the molten zinc bath and the galvanized pipe is plated with a metallic surface by means of unidirectional current in the plating bath. Hot plating process is fast, the coating is thick and consumes more zinc. Ordinary galvanized slow speed, thin coating.
Q:What is the difference between the stainless steel pipe welded pipe and seamless pipe?
Seamless tube is a strip of steel with a hollow cross section and no seams at all. The general is rolled into a cylindrical tube plate welding.
Q:What does "buried steel pipe" 6*2SC100 mean?
The embedded steel pipe 6*2SC100 refers to a welded steel pipe with 2 pipe thicknesses of 6mm and a diameter of 100mm. SC pipe means welded steel pipe. Embedment means pre installation (burial).
Q:How can galvanized steel tubes be painted on the surface?
Suitable for galvanized base material (antirust primer), epoxy zinc yellow primer (double component), epoxy ester zinc yellow primer.Pretreatment of galvanized sheet when brushing:1, conditional, you can zinc plating phosphating treatment, or first spray a layer of phosphating primer.2, or smooth zinc plating surface sweeping treatment.3, the galvanized workpiece, galvanized pipe surface with solvent (that is, epoxy zinc yellow primer, thinner) wipe, in order to remove the workpiece crude oil protective layer, and increase cleanliness.4, two-component epoxy zinc yellow primer: in strict accordance with the proportion of paint and curing agent paint, and aging 30 minutes later, modulation suitable construction viscosity, you can spray.One component epoxy ester primer: zinc yellow construction viscosity suitable to construction of modulation, the correct construction method.
Q:How to perform nondestructive inspection of steel tubes
Radiographic inspection (RT)One of the earliest nondestructive testing methods is widely used in the inspection of internal defects of metals and non-metallic materials and products, with a history of at least 50 years. It has incomparable unique advantages, that is to test the correctness, reliability and intuition of the defects, and the ray film can be used for the analysis of defects and as a quality certificate archive. But this method also has the disadvantages of more complicated equipment and higher cost, and should pay attention to the protection of radiation.
Q:Is the steel frame on each floor supporting formwork (floor) called full scaffolding?
The use of scaffold as its height, when the ceiling height below 3.6M, no matter what the ceiling decoration, decorative scaffolding are calculated
Q:Seamless steel tube 89X4 meters, how heavy?
The theoretical weight calculation formula of plain carbon steel and alloy steel seamless pipe:W=0.02466 (D-S) S, the density of steel fand 7.85kg/dmNote: weight per meter kg/m= (outer diameter wall thickness) * wall thickness *0.02466 units, mm: mmFor example, the seamless steel pipe with a diameter of 89*4 weight per meter:(89-4) *4*0.02466=8.384 kg / M.
Q:Is the same specification seamless steel pipe more expensive than welded pipe?
You need to see this in the interval that diameter, such as seamless pipe and welded steel tube 530*20 mm compared to 5450 yuan per ton, seamless pipe, welded steel pipe, which is 4550 yuan, small diameter 10*2 mm, seamless pipe will require far 10000 per ton, just need more than 6000
Q:Why seamless steel pipe called seamless steel pipe?
Seamless steel pipe is a hollow section, without the joint round, square, rectangular steel. Seamless steel tubes are made of ingots or billets made by piercing and are then made by hot rolling, cold rolling or cold casting. Seamless steel pipe with a hollow section, as pipe conveying fluid, compared withsteel and roundsteelinsolid, flexural torsional strength in the same time, the weight is light, is a kind of economic section steel, widely used in the manufacture of structural parts and mechanical parts, such as the oil pipe, automobile transmission shaft, bike frame and construction using steel scaffolding.
Q:Is the PVC tube a plastic tube or a plastic tube?.
Or polymer polymerized by radical polymerization under the action of light and heat. The vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resins. The material is a non crystalline material. PVC materials often use stabilizers, lubricants, auxiliary processing agents, pigments, anti shock agents and other additives in practical use. Is not flammable, high strength, excellent resistance to climate variability and geometric stability. PVC has strong resistance to oxidizing agents, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid, and it is also not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.

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