Name: Q355B Carbon Steel Pipe
SKU: 0

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Q355B Carbon Steel Pipe

Q355B Carbon Steel Pipe is a high-strength low-alloy structural tube, featuring higher yield strength and better load-bearing capacity than Q235B. Ideal for engineering machinery frames, photovoltaic brackets, trailer structures and heavy-duty structural projects. Custom cutting, grooving and galvanized finishing available.

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Product Parameters

Item	Specification
Product Name	Q355B Carbon Steel Pipe
Grade	Q355B
Standard	GB/T 1591, GB/T 6728
Yield Strength	≥355MPa
Tensile Strength	470–630MPa
Outer Diameter	21.3mm–610mm
Wall Thickness	1.5mm–14mm
Length	5.8m/6m/11.8m/12m, custom length
Surface	Black, anti‑rust oil, hot‑dip galvanized
Processing	Cutting, grooving, threading, beveling
Certificate	MTC, ISO9001, SGS Inspection
Package	Seaworthy bundled export packing

Feature	Details
High Load‑Bearing Strength	Minimum 355MPa yield strength, far higher than Q235B, suitable for heavy‑duty structural load
Excellent Structural Stability	Good toughness & anti‑deformation performance, not easy to bend or crack under heavy pressure
Great Processability	Superior welding, cutting and bending performance for frame fabrication
Multiple Surface Options	Black bare, anti‑rust oil, hot‑dip galvanized for outdoor anti‑corrosion
Custom Processing	Fixed‑length cutting, grooving, threading, bevel end treatment
Main Applications	Engineering machinery main frames & support structures Photovoltaic solar panel mounting brackets Trailer, truck chassis and transportation structural tubes Heavy‑duty steel structure supports Outdoor engineering load‑bearing components

Q355B steel pipe is upgraded high-strength structural tube, ideal for heavy-load scenarios where Q235B strength is insufficient. It is widely used for new energy photovoltaic projects, transportation trailers and mechanical equipment frames. We support full-size customization and bulk factory supply.

Looking for professional carbon steel pipe suppliers from China? Send us your required diameter, wall thickness, length and surface treatment. Get competitive factory wholesale price and professional project solution within 24 hours. Contact us now!

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FAQ

1.What kind of customer service do you provide?

We provide comprehensive customer service, including basic design, procurement of supporting facilities, and options for dispatching installation guides.

2.What are the customer evaluations of your company?

We are proud to consistently receive five-star reviews from our customers, which demonstrates our commitment to quality and service.

3.What is your quality inspection process like?

Our strict quality inspection process ensures that every product meets the highest standards of excellence. From raw materials to finished products, every stage is carefully inspected to ensure excellent quality.

4.Do you accept container loading inspection?

Welcome to dispatch inspectors, not only for container loading, but also at any time during production.

5.What is the delivery time?

The delivery time depends on the quantity of orders. Usually, the delivery time to the nearest port in China is 15-30 days after receiving the deposit.

6. How to obtain a project quotation?

You can contact us 24 * 7 via email, phone, WhatsApp, WeChat, etc. You will receive a reply within 4 hours.