Q345 Welded Seamless Mild Carbon Steel Pipe/Black Steel Pipe Square/Rectangular Tube
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Product Highlights
- Comprehensive Warranty: Quality and quantity claims accepted within 90 days of arrival at destination port.
- Free Sample Offer: One free 20cm high-quality sample available with freight collected for serious buyers.
- Fast Response Time: Professional sales manager provides quick replies within 24 hours.
- Extensive Size Range: Available sizes from 15x15mm to 500x600mm with thickness up to 20mm.
- Third-Party Inspection: Accepts inspections from SGS, BV, and other third-party agencies appointed by buyers.
- Global Export Experience: Successfully exported to over 70 countries across Europe, Middle East, Africa, and more.
- Certified Quality Control: Holds UL, ISO9001/18001, FPC certificates with CNAS accredited lab support.
- Customization Options: Full customization available from samples, designs, and minor adjustments.
Product Attributes
- Customization
- Available
- After-sales Service
- Provided
- Warranty
- Provided
- Model NO.
- Q345
- Type
- Seamless
- Technique
- Hot Rolled
- Material
- Carbon Steel
- Surface Treatment
- Black
- Usage
- Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
- Section Shape
- Rectangular
- Product Name
- Square/Rectangular Pipe
- Technology
- Hot Rolled/Cold Rolled/ERW
- Grade
- Q195/Q215/Q235/Q345/#20/#45
- Alloy or Not
- Non-Alloy
- Surface
- Black Painted
- Thickness
- 0.5-20mm
- Size
- 20*40-300*500mm
- Length
- 3-12m
- Oiled or Non-Oiled
- Non-Oiled
- Color
- Natural Color
- Tolerance
- 3%
- MOQ
- 5tons
- Package
- Standard Seaworthy Package
- Application
- Construction Structure
- Transport Package
- Standard Seaworthy Package
- Specification
- 20*40-300*500mm
- Trademark
- CN
- Origin
- Shandong, China
- HS Code
- 7216210000
- Production Capacity
- 5000tons Per Month
Product Images of Q345 Welded Seamless Mild Carbon Steel Pipe/Black Steel Pipe Square/Rectangular Tube
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Product Description
Shandong Hongyan Metal Material Co., Ltd. is a large-scale steel pipe manufacturer that produces ERW steel pipes, hot-dip galvanized steel pipes, SSAW steel pipes, and square pipes. Advantages of Hongyan steel pipe:1. 100% after-sales guarantee of quality and quantity.
2. Quick reply within 24 hours by professional sales manager.
3. Large stock in regular size.
4. Free sample 20cm high quality.

| Square and Rectangular Steel Pipe size chart | ||
| Square Hollow Section | Rectangular Hollow Section | Thickness |
| 15*15 20*20 25*25 30*30 | 20*40 30*40 | 1.2-3.0 |
| 40*40 50*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
| 60*60 | 50*70 40*80 | 1.2-5.75 |
| 70*70 80*80 75*75 90*90 100*100 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
| 120*120 140*140 150*150 | 160*80 100*150 140*80 100*180 200*100 | 2.5-10.0 |
| 160*160 180*180 200*200 | 200*150 250*150 | 3.5-12.0 |
| 250*250 300*300 400*200 350*350 350*300 | 250*200 300*200 350*200 350*250 450*250 400*300 500*200 | 4.5-15.75 |
| 400*400 280*280 450*300 450*200 | 400*350 400*250 500*250 500*300 400*600 | 5.0-20.0 |

Shandong Hongyan Metal Material Co., Ltd.
Our vision: To be a professional, reliable and outstanding world-class steel supplier. Our company is located in Jinan City, Shandong Province, with a registered capital of RMB 50 million. We are a professional steel sales company integrating domestic and foreign trade. Our company's main products are stainless steel sheet/coil/tube/rod, carbon steel sheet/coil/tube/rod, galvanized sheet/coil/tube, PPGI and PPGL, H-beam, I-beam, angle steel, channel steel, steel plate pile. Our company has successfully exported to more than 70 countries in Europe, the Middle East, Africa, Southeast Asia, South America, etc. Adhering to the win-win concept and customer-centric belief, we look forward to becoming your trusted quality partner.
OUR SERVISE:
1. Pre-Sales Service *We can offer one free sample length 20 cm with freight collected, if you want to buy our products and take our price.
2. After-Sales Service *Quality/Quantity Claims: The Buyer is entitled to make both quality and quantity claim in writing against the Seller within 90 days after arrival at the port of destination.
Strict Quality Control:
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK. We own UL, ISO9001/18001, FPC certificates.
Packing & Delivery
1. OD 300mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles
2. above OD 300mm in bulk or according to custom opinion
3. 25 tons/container and 5 tons/size for a trial order;
4. For 20" container the max length is 5.8m;
5. For 40" container the max length is 11.8m.
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
CONTACT US
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2451806". Items marked "" are certified.
Company Profile
Shandong Hongyan Metal Materials Co., Ltd.
Our vision: To be a professional, reliable and outstanding world-class steel supplier.
Our company is located in Jinan City, Shandong Province, with a registered capital of RMB 50 million. We are a professional steel sales company integrating domestic and foreign trade.
Our company has been operating in the steel industry for 20 years. The main products are stainless steel sheet/coil/tube/rod, carbon steel sheet/coil/tube/rod, galvanized sheet/coil/tube, PPGI and PPGL, H-beam, I-beam, angle steel, channel steel, sheet pile. And also we can produce according to the requirments of the costomer. The production capacity of our company is anout 200000 tons per year.
Due to our excellent quality and competitive price, we have been servicing customer throughout wold and win a good reputation. As far as we have exported to countries like United States of America, Russia, Canada, Australia, England, Poland, Dubai, UAE, Japan, Korea, Africa, Vietnam and so on. Adhering to the concept of win-win and customer-centred belief, we look forward to becoming your trustworthy high-quality partner.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Room 402, Building a, Evergrande Shounuo City Light, Jinan, Shandong, China
-
Plant Area
- 177 square meters
-
Number of Employees
- 15
-
Registered Capital
- 50,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Qingdao Port
-
Minimum Order Quantity
- 1 ton
-
Supply Chain Partners
- 2
Our Production Capability & Technical Expertise
-
Main Products
- Stainless Steel, Carbon Steel, Galvanized Product, Rebar, PPGL/PPGI, Copper/Brass/Bronze Product, Ductile Iron Pipe
-
QA/QC inspectors
- 2 people
-
Inspection Type for Finished Products
- Random inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Finished product checked by packing staff
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization
-
R&D Engineers
- 3 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2020-08-19
-
Export Year
- 4 years
-
Main Markets
- South America, Southeast Asia/ Mideast, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 11
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Product Certification
- CE, Others
-
Cooperated with Fortune 500
- No
FAQ
- What is the warranty period for quality claims?
- Buyers can make quality and quantity claims in writing within 90 days after arrival at the port of destination.
- Is it possible to get a free sample?
- Yes, we offer one free sample of 20cm length with freight collected if you intend to purchase our products.
- How quickly do you respond to inquiries?
- Our professional sales manager ensures a quick reply within 24 hours.
- What certifications do your products hold?
- We hold UL, ISO9001/18001, and FPC certificates, and our lab is accredited by CNAS.
- Do you accept third-party inspections?
- Yes, we accept inspections from third parties appointed and paid by the buyer, such as SGS and BV.
- What are the available sizes and thicknesses?
- Sizes range from 15x15mm to 500x600mm, with thickness options from 1.2mm up to 20.0mm.
- Can you customize the products?
- Yes, we offer full customization from samples, designs, and minor customizations.
- What are the payment terms?
- We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.
Send your message to this supplier
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