Black Steel Square Tube / Rectangular Hollow Tubular Carbon Steel Pipe
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Product Highlights
- Customizable Dimensions: Size 10*10-600*600mm, Thickness 1-60mm, Length 1-12mm, Surface Galvanized/Color Painting/Black.
- Seamless Construction: Formed by cold drawing and extrusion, offering essential differences from welded pipes for fluid conveyance.
- Wide Material Selection: Available in Q195, Q215, Q235, Q345, Fe310, Fe360, St33, St37-2, SS330, SS400, S235, S275, S355, ASTM 1010/1017/1020, A36.
- Multi-Industry Usage: Suitable for Pipeline Transport, Boiler Pipe, Hydraulic/Automobile, Oil/Gas Drilling, Machinery, Chemical, Mining, and Construction.
- Strict Quality Control: Pre-production samples before mass production and final inspection before shipment to guarantee quality.
- Flexible Surface Treatment: Options include Bared, Black Painted, Galvanized, Oiled, or customized requirements.
- Free Sample Availability: Free samples provided to customers, though freight costs are not covered.
- Comprehensive After-Sales: Offers 100% product guarantee and services including Bending, Welding, Cutting, and Punching.
Product Attributes
- After-sales Service
- Bending, Welding, Cutting, Punching
- Type
- Seamless
- Technique
- Hot Rolled
- Model NO.
- pipe
- Material
- Carbon Steel
- Surface Treatment
- Black
- Usage
- Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
- Section Shape
- Square
- Size
- 10*10-600*600mm
- Thickness
- 1mm - 60mm
- Length
- 1mm - 12mm
- Surface
- Galvanized, Color Painting, Black Original
- OEM
- Yes
- Transport Package
- Standard Packing
- Specification
- Thickness: 1.4 - 14 mm
- Trademark
- zhongding
- Origin
- China
- Production Capacity
- 2000tonnes Per Week
Product Images of Black Steel Square Tube / Rectangular Hollow Tubular Carbon Steel Pipe
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Product Description


Seamless square pipe is a square steel pipe with four corners. It is a square steel pipe formed by cold drawing and extrusion of seamless steel pipe. Seamless square pipe and welded square pipe have essential differences. The steel pipe has a hollow section and is widely used as a pipeline for conveying fluids.
Product Description: Black iron steel square tube seamless steel pipe tube
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Common Size |
OD |
10*10-600*600mm |
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Wall Thickness |
0.6-50mm |
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Length |
5.8-12m or as request |
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|
Steel material |
Q195, Q215, Q235,Q345, Fe310, Fe360, St33, St37-2, SS330, SS400, S235, S275, S355, ASTM 1010, ASTM 1017, ASTM 1020,A36 |
|
|
Standard |
API,ASTM, ASME, DIN,GB,JIS,ASNI,BS |
|
|
Usage |
Transport routes for gas, oil, chemical materials, water,steam and other gas or liquid |
|
|
Ends |
Plained or Beveled or other requirements |
|
|
Surface |
Bared, Black Painted, Galvanized, Oiled or to your requirements |
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Third Party Inspection |
SGS,BV,ISO |
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We are based in Zhejiang,China,start from 2020,sell to Domestic Market(20.00%),North America(10.00%),South America(10.00%),Eastern Europe(10.00%),Southeast Asia(10.00%),Africa(10.00%),Oceania(5.00%),Mid East(5.00%),Eastern Asia(5.00%),Western Europe(5.00%),Northern Europe(5.00%),Southern Europe(5.00%).There are total about 11-50 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Seamless Steel Pipe/ Welded Steel Pipe,Hot Rolled Plate / Color Steel Plate,Round Bar,etc.
4.Why should you buy from us not from other suppliers?
Zhongding Steel is a diversified private enterprise with business covering stainless steel,carbon structure steel,alloy steel,etc.And established a number of joint-venture steel production lines with some well-known steel companies.
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,FAS,FCA,DES;
Accepted Payment Currency: USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken: English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian.
6.Can I get some samples?
We are glad to provide free samples to you,but we do not offer the freight.
7.What is your after-sale service?
We provide after-sale service and offer 100% guarantee on our products.
About the Supplier
This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR253077". Items marked "" are certified.
Company Profile
ZHEJIANG ZHONG DING IRON AND STEEL Co., Ltd is a large-scale enterprise integrating production, sales and trade. The company now has 8 hot-rolling piercing production lines and 30 cold-rolling unit production lines, with a production range of 10mm-219mm, wall thickness 0.5mm-22mm, tolerance range of +-2 wire precision steel pipes, and an annual inventory of more than 8, 000 tons of precision bright tubes; Advanced There are 6 double-sided submerged arc welded spiral steel pipe production lines, which can produce double-sided submerged arc welded spiral steel pipes with a diameter of 219-3620mm and a wall thickness of 6-30mm. The annual production of spiral pipes is more than 200, 000 tons and is trusted by the majority of the industry.
ZHONG DING STEEL's sales varieties include: Stainless steel plates, stainless steel pipes, stainless steel rods, seamless steel pipes, thick-walled steel pipes, oxygen blowing pipes, longitudinally welded pipes, color steel plates, C-shaped steels, spiral pipes, galvanized pipes, cold drawn flat steels, Strip steel, cold-rolled strip steel, steel plate, round steel, angle channel steel, rail steel, etc., with complete varieties, one-stop purchasing unit.
We always adhere to the business philosophy of "integrity management, customer first", and strive to achieve the best products, the best quality, the lowest price, and the most complete service to thank new and old customers. The sales network has now spread all over the country. All my colleagues in the company warmly welcome new and old friends to visit, patronize, and guide, let us work together to create brilliant!
About Our Factory & Business Background
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Business Type
- Trading Company
- Address
- Baolong Commercial Plaza, Zhonghe Street, Yinzhou District, Ningbo, Zhejiang, China
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Number of Employees
- 14
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Registered Capital
- 16,880,000 RMB
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Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
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International Commercial Terms(Incoterms)
- FOB, EXW
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Average Lead Time
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Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Ningbo Port
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Minimum Order Quantity
- 1 Ton
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Supply Chain Partners
- 47
Our Production Capability & Technical Expertise
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Main Products
- Seamless Steel Pipe, Welded Steel Pipe, Carbon steel sheet, Carbon Steel Coil, Decking sheet, Steel Beam, Steel round bar, Steel Square pipe, Steel Rail, Stainless steel pipe/Strips/Coil/Bar/Plate
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Customization Options
- Customization from Samples
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R&D Engineers
- 1 people
Our Industry Experience & Global Business Record
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Year of Establishment
- 2020-10-23
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Export Year
- 4 Years
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Main Markets
- Southeast Asia/ Mideast
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Repeat Buyers Choice
- 80%~100%
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Number of Foreign Trading Staff
- 8
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Overseas Agent/Branch
- No
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New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What is the minimum order quantity?
- The minimum order quantity is 1 Ton.
- What are the accepted payment terms?
- Accepted payment types include T/T, L/C, D/P, D/A, LC, PayPal, Western Union, and Small-amount payment. Currencies include USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF.
- What is the lead time for delivery?
- The average lead time is within 15 workdays for both peak season and off-season.
- Can the product be customized?
- Yes, customization is available from samples. Options include Size (10*10-600*600mm), Thickness (1-60mm), Length (1-12mm), and Surface (Galvanized, Color Painting, Black Original).
- What is the warranty or guarantee policy?
- We provide after-sale service and offer a 100% guarantee on our products.
- How is quality guaranteed?
- We always provide a pre-production sample before mass production and conduct a final inspection before shipment.
- What are the common sizes and thicknesses?
- Common sizes are OD 10*10-600*600mm with a wall thickness of 0.6-50mm. Lengths are typically 5.8-12m or as requested.
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