Q235 Carbon Steel Pipe (also called Q235 Carbon Steel Tube) is a widely used structural steel product with excellent strength, toughness, and weldability. Produced according to ASTM, JIS, GB, and EN standards, our pipes meet strict international requirements for mechanical properties and dimensional accuracy.
Manufactured by Jiangsu Cunrui Metal Products Co., Ltd., each batch is supplied with Mill Test Certificates (MTC), third-party inspection reports, and chemical composition analysis to ensure reliability and traceability. Q235 pipes provide stable yield strength, impact resistance, and good corrosion protection when properly treated, making them a trusted choice for global engineering projects.
Features & Advantages
High Strength & Durability – Stable mechanical properties, suitable for load-bearing and pressure applications.
Excellent Weldability – Easy to process, weld, and fabricate without losing strength.
Cost-Effective – More economical than alloy steels while maintaining good performance.
International Standards – Conforms to ASTM, GB/T700 Q235, EN, and JIS requirements.
Quality Assurance – Full documentation including material certificate, inspection reports, and optional SGS/BV testing.
Applications
Q235 Carbon Steel Pipes are commonly used in:
Construction & Infrastructure – Bridges, buildings, structural frameworks.
Machinery Manufacturing – Equipment parts, automotive frames, agricultural tools.
Pipeline Systems – Low-pressure fluid delivery, water, gas, and air pipelines.
General Engineering – Welding structures, mechanical fabrication, metal processing.
Product Specifications & Technical Data
|
Parameter |
Range / Options |
Notes |
|
Material Grade |
Q235 (Equivalent: ASTM A36, S235JR) |
Carbon structural steel |
|
Outer Diameter |
10mm – 1200mm |
Customized sizes available |
|
Wall Thickness |
1mm – 60mm |
Standard & heavy-wall options |
|
Length |
6m, 9m, 12m, or customized |
Cut-to-length service |
|
Yield Strength |
≥ 235 MPa |
Stable mechanical performance |
|
Tensile Strength |
375 – 460 MPa |
Consistent quality |
|
Surface Finish |
Black, Oiled, Galvanized, Painted |
Corrosion protection options |
|
Standards |
ASTM, JIS, EN, GB |
Internationally recognized |
Customization Services
Support cutting, drilling, welding, bending, and machining upon request.
Accept custom drawings and OEM fabrication.
Multiple surface treatments: galvanizing, painting, oil-coating.
Flexible MOQ (Minimum Order Quantity) for both large projects and small orders.
Fast response and tailored solutions for special requirements.
Pricing & Delivery
Competitive factory-direct pricing with bulk discounts.
In-stock sizes for quick delivery, special orders with short lead times.
Reliable logistics partners to ensure on-time shipment worldwide.
Our Strength
Manufacturer & Exporter with more than 15 years of steel industry experience.
Modern production facilities with CNC cutting, welding, and shaping equipment.
Annual capacity over 100,000 tons of carbon steel products.
Exporting to over 60 countries with CE, ISO, SGS, and BV certifications.
Service & Support
Quick response to inquiries within 12 hours.
Technical support for material selection and engineering solutions.
Export-standard packaging: seaworthy bundles, pallets, or as requested.
Clear after-sales policy – replacement or refund for verified quality issues.
FAQ
Q1: Do you provide material certificates?
A1: Yes, each Q235 Carbon Steel Pipe is supplied with MTC and third-party inspection reports upon request.
Q2: Can you produce non-standard sizes?
A2: Absolutely. We offer customized dimensions and fabrication services according to drawings.
Q3: What surface treatments are available?
A3: Black, oiled, galvanized, or painted finishes are available for corrosion resistance.
Q4: What is your delivery time?
A4: For stock items, we can ship within 7 days; for customized orders, usually 15–30 days.
Q5: What is your minimum order quantity (MOQ)?
A5: We offer flexible MOQs, starting from 1 ton for regular sizes.
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