Name: China Q345B Large Diameter Thick Wall Seamless Steel Pipe For Bridge Construction Manufacturers Suppliers Factory - Shenzhoutong Steel Pipe
Brand: Shenzhoutong
SKU: 313894844

Products Description

Adopting Q345B low alloy high strength steel material, the product owns a minimum yield strength of 345MPa and excellent tensile resistance, plasticity and impact toughness. It fully complies with GB/T 8162, ASTM A53 and other international standards, ensuring reliable performance in long-term outdoor, heavy-load and complex bridge construction environments. Different from ordinary carbon steel pipes, our thick wall seamless steel pipe has no welding seam defects, with stronger compression resistance, fatigue resistance and structural stability, which can effectively improve the overall safety and durability of bridge projects.

Basic Product Information

Basic Item	Detailed Specification
Product Name	Q345B Large Diameter Thick Wall Seamless Steel Pipe for Bridge Construction
Steel Grade	Q345B Low Alloy High Strength Structural Steel
Production Standard	GB/T 8162, ASTM A53, EN 10210, JIS G 3444
Production Process	Hot Rolled, Seamless Forming, Precision Heat Treatment
Shape	Round Seamless Pipe
Origin	China (Mainland)
Certification	ISO9001, CE, SGS, Third-party Inspection Available

Technical Parameter Specifications

Technical Parameter	Specific Data
Outer Diameter Range	38mm - 630mm, Custom Large Caliber Available
Wall Thickness Range	2.9mm - 60mm, Thick Wall Customization
Yield Strength	≥345MPa (Stable Structural Bearing Capacity)
Tensile Strength	490MPa - 675MPa
Elongation Rate	≥21% (Excellent Plasticity)
Impact Toughness	Good Room Temperature Impact Resistance (Grade B)
Length	6m/12m Fixed Length, Custom Cutting Length
Surface Treatment	Black Pickled, Rust-proof Oil Coating, Custom Galvanized

Product Features & Advantages

Core Advantages	Detailed Description
High Structural Strength	Made of Q345B low alloy high strength steel, with stable yield and tensile strength, effectively bears heavy load of bridge main structure, piers and support frames, avoids structural deformation.
Superior Thick Wall Stability	Uniform thick wall thickness, seamless integral forming, no welding seam weakness, excellent compression resistance and fatigue resistance, suitable for long-term outdoor bridge engineering service.
Excellent Weldability & Plasticity	Reasonable chemical composition with manganese and silicon alloy elements, easy for cutting, welding and bending processing, convenient for on-site bridge construction and assembly.
Weather & Corrosion Resistance	Good atmospheric corrosion resistance and temperature adaptability, resistant to wind, rain and outdoor aging, greatly extends the service life of bridge infrastructure.
Strict Quality Control	100% non-destructive testing (UT/MT/PT), dimensional tolerance strictly compliant with international standards, stable quality for large bridge engineering projects.
Customized Service	Support custom diameter, wall thickness, length and surface treatment, meet different design requirements of highway bridges, railway bridges and urban viaducts.

Application Scope

Application Field	Specific Usage
Highway & Railway Bridge	Main bridge support structure, bridge pier load-bearing pipe, truss structure, bridge foundation engineering
Urban Viaduct & Overpass	Urban traffic viaduct support frame, overhead bridge structural pipe, municipal bridge engineering
Large Infrastructure Project	Port bridge, river crossing bridge, highway grade separation bridge, heavy load structural support project
Bridge Auxiliary Structure	Bridge guardrail base, reinforcement support, temporary load-bearing support for bridge construction

Packaging & Shipping & Service

Service Item	Detailed Information
Packaging	Standard seaworthy export packing, bundled with steel strips, rust-proof packaging, end cap protection to avoid damage
Shipping Port	Tianjin Port, Qingdao Port, Shanghai Port
Delivery Time	Stock goods within 3-7 days, customized production within 15-25 working days
After-sales Service	24-hour online consultation, free technical support, product quality guarantee, support third-party inspection before shipment
Trade Terms	FOB, CIF, CFR, EXW, Support customized trade terms