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Q235 carbon steel pipe
Material:Carbon Steel
Technique:ERW
Usage:Construction & Decoration, Furniture
- Overview
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Product Overview
Q235 carbon steel pipe is the most widely used mild carbon structural steel pipe in the global construction and plumbing industry. As a standard Chinese structural steel grade, the letter “Q” denotes the material’s yield point, while the number “235” represents its minimum yield strength of 235MPa, delivering stable and reliable mechanical performance for general engineering applications.
Manufactured from premium hot-rolled steel coils and strips, Q235 steel pipes are formed through high-frequency electric resistance welding (ERW) technology. This mature production process ensures uniform pipe wall thickness, smooth surface finish, and precise dimensional tolerance. The product supports diversified surface treatments, including black bare finish, anti-rust oil coating, painting, pre-galvanization, and hot-dip galvanization to adapt to different usage environments.
Strictly manufactured in accordance with multiple international authoritative standards including GB/T3091, ASTM A53, EN39, and BS1139, Q235 carbon steel pipes fully meet global export quality requirements, making them applicable for construction, structural support, and low-pressure fluid transmission projects worldwide.
Core Advantages
Stable and Balanced Mechanical Properties: Q235 steel features moderate tensile strength and hardness with excellent comprehensive ductility. It possesses superior processing performance in welding, cutting, bending, and punching, allowing for flexible secondary processing and on-site construction without structural damage or cracking, which greatly improves construction efficiency.
Superior Cost Performance: Compared with alloy steel and stainless steel materials, Q235 carbon steel has lower raw material and production costs. It maintains reliable structural performance under conventional working conditions, providing an economical and practical solution for large-scale engineering procurement and mass construction projects.
Adequate and Stable Supply Capacity: As a mainstream steel product with mature production technology, Q235 steel pipes are mass-produced by major domestic steel mills. Sufficient raw material reserves and finished product stocks ensure fast delivery cycles, supporting both small trial orders and large-batch bulk orders steadily.
Excellent Structural Strength and Deformation Resistance: With higher yield strength and rigidity than Q195 mild steel, Q235 carbon steel pipe boasts outstanding load-bearing and anti-deformation capabilities. It can withstand greater external pressure and structural tension, making it more suitable for heavy-duty structural support and scaffolding engineering scenarios.
Wide Application Range
Construction and Infrastructure Engineering: It is the preferred material for construction scaffolding pipes, building main structural supports, safety guardrails, fence posts, greenhouse frames, and road safety bollards. Its stable bearing capacity ensures the safety and durability of building and municipal auxiliary structures.
Low-Pressure Fluid Transportation: The pipe is widely used in municipal engineering and factory plumbing systems for conveying low-pressure water, conventional gas, and compressed air. It complies with international fluid pipeline standards and delivers stable sealing and transmission performance.
Industrial and Mechanical Manufacturing: Q235 steel pipes are commonly applied to manufacture mechanical base frames, vehicle support brackets, and agricultural equipment accessories. Its balanced mechanical properties perfectly meet the structural support demands of various ordinary mechanical equipment.
General Engineering Projects: It serves as ideal materials for underground pipeline casings and various temporary steel structures in engineering construction, providing stable structural protection and auxiliary support for foundation and municipal projects.
Product parameters
Q235 | |
Material |
Carbon Steel |
Technique |
ERW |
Usage |
Construction & Decoration, Furniture |
Standard |
ASTMA53, JIS G3101, GB/T 13793-2016, GB/T 3094-2012, GB-T 3325-2017, GB/T3091, EN39, BS1139 |
Available shapes |
Round, Square, Rectangular, Oval, U-shaped or Custom Shape |
Outer Diameter |
20mm-220mm |
Wall Thickness |
0.3-2.5mm |
length |
3.6-7m (Can be cut to shorter lengths afterwards) |
Surface Treatment |
Oiled or not,Painting or not |
Origin |
Shenzhen, Guangzhou (China) |
FAQ
Q1: Can I get samples before order ?
A1: Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings，but the courier freight will be covered by customer account.
Q2: What is the delivery time?
A2: 8-45 days
Q3: What is your MOQ?
A3: We will provide Original Mill Usually 25 tonnes, but it can be adjusted according to your needs and the actual situation of the inventory.
Q4: What kind of payment does your company support?
A4: T/T, L/C
Q5: What kind of trade term does your company support?
A5: FOB, CIF, EXW, CFR
Q6: Do you provide custom made Products service?
A6: Yes,if you have your own design , we canproduce according to your specification and drawing.
Q7: Are you trading company or manufacturer ?
A7: We are professional manufacturer more than 12 years. we can provide a wide range of steel products.
Q8: Can I go to your factory to visit?
A8: Of course, we welcome customers from all over the world to visit our factory.
