Q355 Quick Opening Flange – Durable Carbon Steel Flange

SSM manufactures high-quality Q355 Quick Opening Flanges, designed for fast assembly and disassembly in piping systems. These flanges are widely used in chemical, petrochemical, water treatment, and industrial piping applications where frequent maintenance or inspection is required.

Material – Q355 Carbon Steel

Q355 is a low-alloy carbon structural steel with excellent mechanical properties, weldability, and corrosion resistance for standard industrial environments. Key chemical composition includes:

Carbon (C): 0.14–0.22%

Manganese (Mn): 0.8–1.6%

Phosphorus (P): ≤ 0.035%

Sulfur (S): ≤ 0.035%

Silicon (Si): 0.17–0.37%

Mechanical Properties

Yield Strength: ≥ 355 MPa

Tensile Strength: 470–630 MPa

Impact Toughness: Good low-temperature performance

Features

Quick Opening Design: Allows fast assembly/disassembly without full bolt removal

High Strength & Durability: Suitable for industrial and high-pressure applications

Weldable: Compatible with standard welding procedures

Customizable Sizes: Available in various diameters and pressure ratings

Applications

Chemical and petrochemical plants

Water treatment and wastewater pipelines

Industrial piping requiring frequent maintenance

Mechanical systems requiring reliable flange connections

Why Choose SSM

SSM ensures Q355 Quick Opening Flanges are manufactured to strict quality standards, offering durable, reliable, and easy-to-install solutions for industrial piping projects.

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