20# Carbon Seamless Hot Rolled ASTM St52 Q235 Boiler Pipe
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Product Highlights
- Global Export Experience: 20 years in steel export, serving 100+ countries across Asia, Middle East, Africa, Europe, and Americas.
- Flexible Customization: Customizable grade, standard, length, and processing services like bending, welding, and cutting.
- Comprehensive Certifications: Products comply with ASTM, GB, JIS, DIN, EN standards with original Mill Test Certificates available.
- Robust Export Packaging: VCI anti-rust paper, waterproof PE film, steel strapping, and fumigated pallets ensure safe transit.
- Competitive Pricing: Industry-leading scale and efficiency provide competitive FOB prices with stable coating quality.
- Wide Material Range: Available in Q195-Q345, 10#, 20#, 45#, 12cr1mov, 15crmo, and various ASTM/DIN grades.
- Fast Delivery Options: 7-15 days for in-stock pipes; 20-45 days for customized production based on schedule.
- Complete Documentation: Full set of export documents including Invoice, Packing List, MTC, and Certificate of Origin.
Product Attributes
- Customization
- Available
- Warranty
- 2 Years
- Type
- Seamless
- Model NO.
- ASTM St52 Q235
- Technique
- Hot Rolled
- 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
- Round
- Grade
- Q195/Q235q345b/Q235/E355
- Standard
- ASTM GB JIS
- Product Name
- Carbon Steel Seamless Pipe
- Delivery Time
- 7 Days
- Processing Service
- Bending, Welding, Decoiling, Cutting, Punching
- Tolerance
- ±1%
- Place of Origin
- Shandong, China
- MOQ
- 5 Tons
- Length
- 6m 12m or as Customer's Requirement
- Certificate
- CE, RoHS, GB, ISO 9001
- Payment Term
- 30%T/T Advance + 70% Balance
- Technology
- Hot/Cold Rolled
- Alloy or Not
- Non-Alloy
- Packing
- Standard Seaworthy Packing
- Surface
- Black Bright Galvanized Painted
- Transport Package
- Standard Shipping Packaging
- Specification
- Standard or customized
- Trademark
- Customizable
- Origin
- China
- Production Capacity
- 50000
Product Images of 20# Carbon Seamless Hot Rolled ASTM St52 Q235 Boiler Pipe
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Product Description

Specification
Product name | Carbon Steel Seamless Pipe | |||
Product standard | ASTM A36 A106 DIN JIS BS GB | |||
Product material | Q195-Q345, 10# ,20#,45#,195-Q345, Gr.B-Gr.50, 12cr1mov, 15crmo etc | |||
Outer diameter | 1/2 " --- 60 " | |||
Wall thickness | SCH 10 --- SCH 160 | |||
Processing | Grooved, Bevelled, Plain end, Welding, Punching, Cutting, Bending, Decoiling | |||
Surface treatment | Black painting / Galvanized/Red painting/epoxy | |||
Price term | FOB / CIF / EXW | |||
Payment term | 30% TT advance and Balance 70% against copy of BL / LC at sight | |||
Tolerance | ±5%, ±1% | |||
Length | 12 m, 6 m | |||
Technique | Cold Rolled Hot Rolled Galvanized | |||
Section Shape | Round | |||
MOQ | 1 Ton | |||







Packing & Delivery




Company Introduction
Our History & Advantages in Steel Export
Founded 20 years ago, we have grown alongside China's steel industry—from a net importer to the world's largest steel exporter. We specialize in color-coated galvanized coils, galvanized steel, and high-end steel products, exporting to 100+ countries across Asia, Middle East, Africa, Europe, and Americas.
Our Core Strengths
Quality & Technology: Advanced CGL/CCL lines, compliance with ASTM/EN/JIS standards, stable coating & corrosion resistance.
Cost & Price Advantage: Industry-leading scale & efficiency ensure competitive FOB prices.
Packaging & Logistics: Multi-layer reinforced export packaging; full sea/land logistics support.
Reliability: On-time delivery, flexible MOQs, professional trade service, and proven global track record.
Founded 20 years ago, we have grown alongside China's steel industry—from a net importer to the world's largest steel exporter. We specialize in color-coated galvanized coils, galvanized steel, and high-end steel products, exporting to 100+ countries across Asia, Middle East, Africa, Europe, and Americas.
Our Core Strengths
Quality & Technology: Advanced CGL/CCL lines, compliance with ASTM/EN/JIS standards, stable coating & corrosion resistance.
Cost & Price Advantage: Industry-leading scale & efficiency ensure competitive FOB prices.
Packaging & Logistics: Multi-layer reinforced export packaging; full sea/land logistics support.
Reliability: On-time delivery, flexible MOQs, professional trade service, and proven global track record.
FAQ
Q1: What standards & materials do your carbon steel seamless pipes comply with?
A: Our seamless pipes conform to GB, EN, ASTM, DIN, JIS and other international standards.
Main materials: 10#, 20#, Q235B, Q355B, A106 Gr.B, 5L Gr.B, St37, St52 etc.Original Mill Test Certificates (MTC) and inspection reports are available upon request.
Q2: What are your regular sizes for seamless pipes?
A: Outer Diameter (OD): 10mm – 610mm
Wall Thickness (WT): 1.5mm – 60mm
Length: 6m, 12m or customized fixed length.
We also provide beveling, chamfering, painting and cutting services.
Q3: What is your export packaging standard? Will rust occur during transit?
A: Standard export packaging: VCI anti-rust paper/film + waterproof PE film + galvanized steel strapping + plastic/steel end caps.Desiccants and fumigated wooden pallets are added if needed.Packaging fully meets anti-moisture and anti-rust requirements for long ocean transportation.
Q4: What is your minimum order quantity (MOQ)?
A: MOQ: 1–5 tons for trial orders; full container orders: 20–25 tons.We support LCL (Less Container Load) consolidation as per your needs, subject to final negotiation.
Q5: How long is the delivery time?
A: 7–15 days for in-stock pipes;20–45 days for customized production, based on production schedule and order confirmation.
Q6: What trade terms and payment terms do you accept?
A: Trade terms: FOB, CIF, CFR, EXW, CPT etc.Payment terms: T/T, L/C at sight etc.All terms are subject to the signed foreign trade contract.
Q7: Can you provide customs documents and certificates?
A: Yes. We provide a complete set of export documents:Commercial Invoice, Packing List, MTC, Quality Certificate, Certificate of Origin, Bill of Lading etc.We also support export declaration and commodity inspection.
Q8: What are your transportation and securing methods?
A: Small/medium orders: shipped by 20GP/40GP containers, loaded on fumigated wooden pallets or steel baskets, secured firmly.Large bulk orders: shipped by bulk carriers, lashed in accordance with international maritime standards to prevent rolling and shifting.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI265510". Items marked "" are certified.
Company Profile
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Huaiyin District, Jinan, Shandong, China
-
Registered Capital
- 10,000,000 RMB
-
Terms of Payment
- T/T, LC, D/P
-
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
- Tianjin Port
-
Minimum Order Quantity
- 1 ton
-
Supply Chain Partners
- 3
Our Production Capability & Technical Expertise
-
Main Products
- Galvanized coils, Color-coated coils, Square tubes, H-beams, Galvanized wire, Hot-rolled coils, Cold-rolled coils, Stainless steel coils, Seamless steel pipes, Galvanized pipes, Spiral pipes
-
QA/QC inspectors
- 1 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
- Minor Customization, Customization from Samples
-
R&D Engineers
- 1 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2023-03-02
-
Export Year
- 3 years
-
Main Markets
- Domestic, Hong Kong, China
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What standards and materials do your carbon steel seamless pipes comply with?
- Our seamless pipes conform to GB, EN, ASTM, DIN, JIS, and other international standards. Main materials include 10#, 20#, Q235B, Q355B, A106 Gr.B, 5L Gr.B, St37, St52, etc. Original Mill Test Certificates (MTC) and inspection reports are available upon request.
- What is your export packaging standard? Will rust occur during transit?
- Standard export packaging includes VCI anti-rust paper/film, waterproof PE film, galvanized steel strapping, and plastic/steel end caps. Desiccants and fumigated wooden pallets are added if needed. Packaging fully meets anti-moisture and anti-rust requirements for long ocean transportation.
- What trade terms and payment terms do you accept?
- Trade terms include FOB, CIF, CFR, EXW, CPT, etc. Payment terms are T/T and L/C at sight. All terms are subject to the signed foreign trade contract.
- Can you provide customs documents and certificates?
- Yes. We provide a complete set of export documents: Commercial Invoice, Packing List, MTC, Quality Certificate, Certificate of Origin, Bill of Lading, etc. We also support export declaration and commodity inspection.
- What are your transportation and securing methods?
- Small/medium orders are shipped by 20GP/40GP containers, loaded on fumigated wooden pallets or steel baskets, and secured firmly. Large bulk orders are shipped by bulk carriers, lashed in accordance with international maritime standards to prevent rolling and shifting.
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