Carbon Steel Square Pipes
Square pipe is a name for square pipe and rectangular pipe, that is, steel pipe with equal and unequal side length. It is made of rolled strip steel after process treatment.
Description


Square pipe is a name for square pipe and rectangular pipe, that is, steel pipe with equal and unequal side length. It is made of rolled strip steel after process treatment. Generally, the strip steel is unpacked, leveled, crimped and welded to form a round pipe, then rolled into a square pipe from the round pipe, and then cut into the required length. Application fields: 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. For engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, household appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle frame, motorcycle frame, shelf, fitness equipment, leisure and tourism products, steel furniture, various specifications of oil casing, oil pipe and pipeline pipe, water, gas, sewage Air, heating and other fluid transportation, fire fighting and support, construction industry, etc.
Standard | ASTM,AISI,SUS,JIS,EN,DIN,BS,GB,etc. |
Material | Q235 ,Q195,Q345 ,SPCC,SPCD ,SPCE ,SPCEN ,ST12 ,ST13,ST14,ST15,ST16. |
| DC01,DC03,DC04,DC05,DC06 | |
Diameter | Square pipe: 20*20mm~500*500mm |
| Rectangular pipe: 20*40mm~300*500mm | |
Thickness | 1.2mm~20mm,As Your Request |
Length | 6.0M, 6.5M, 5.0M, 4.0M, 3.0M, 6.5M,1m-12m ,by customer's requiremnts |
Surface Anti-rusty Coating | Pre-galvanized (Zinc coating: 40-80g/m2) |
| Hot dipped galvanized (Zinc coating: 200-600g/m2 ) | |
Pipe Ends | Plain ends |
Surface Treatment | Black Painted, PE Coated, Galvanized or Customized all available |
Main market | Middle East,Africa, Asia and some Uropean country and South America ,Australia |
FAQ:
Q. Are you a factory or a pure trading company?
A: We are a factory.
Q. Are your prices competitive?
A: for the same quality, our price is lower, for the same price, our quality is the best better.
Q. What are your company's strengths?
A: Factory spot, competitive prices, excellent quality, support factory inspection, video call at any time, technical support in 24/7. Simultaneously, we have participated in many international projects.
Q. Whether to support OEM or ODM?
A: We welcome customers to cooperate with us by OEM or ODM. We have a professional technical team, can be customized according to drawings or requirements.
Q. What trade terms do you usually use?
A: We use FOB, CIF, C&R, DDU, DDP.
Q. What is your usual delivery time?
A: From the execution date of the PI, spot products will be delivered within 3 days, and customized products within 15 days.
Special circumstances, please communicate again. All our products have strict quality inspection before they leave the factory, to ensure that you receive the goods with excellent quality.
Q. What are your terms of payment?
A: We use TT and LC, or any other payment method available.

Our company is a comprehensive steel production enterprise integrating production, processing and trade. covers an area of 30,000 square meters, construction area of 7,500 square meters, more than 200 employees.The main products of the company are ERW steel pipe, galvanized steel pipe, precision steel pipe,steel strip,angle steel,channel steel,C/U/Z type steel,light gage steel joist,steel sheet and so on.The annual output of welded steel pipe is 1 million tons.Precision welded pipe is 70,000 tons, cold drawn precision pipe is 40,000 tons quality system production, advanced equipment, reliable quality.
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