Slip-On Welding Square Pipe Flanges for Marine Applications

Our slip-on welding square pipe flanges are specifically designed for square tubing and piping systems used in marine and offshore environments. These flanges allow for quick and secure connections by slipping over the pipe before welding, ensuring proper alignment and a strong joint. Constructed from high-strength marine-grade materials, they are built to withstand the harsh conditions of saltwater, humidity, and pressure fluctuations.

As a dedicated ship chandler, we supply these flanges in a variety of sizes and material grades to meet the diverse needs of shipbuilders, repair yards, and offshore operators. Whether for deck drainage, fuel lines, or structural supports, our slip-on welding square pipe flanges deliver reliable performance and comply with internationally recognized standards.

Key Features

Technical Specifications

Size Range25 mm to 300 mm (1" to 12")
Material OptionsCarbon Steel, Stainless Steel 316L, Duplex Steel
Pressure RatingPN10 / PN16 / PN25 / PN40 or Class 150 / 300
Connection TypeSlip-on, Weld
Weld TypeFillet weld (single or double side)
Surface FinishAnti-corrosive paint, hot-dip galvanized, or bare
StandardsDIN, ANSI, JIS
ApplicationShipbuilding, offshore platforms, deck piping, structural supports

Frequently Asked Questions

What sizes of slip-on welding square pipe flanges are available?

We offer sizes ranging from 25 mm to 300 mm (1" to 12") to accommodate common square pipe dimensions used in marine applications.

Can these flanges be used for both water and oil systems?

Yes, these flanges are suitable for various media including seawater, fresh water, hydraulic oil, and fuel, provided the correct material grade is selected for the specific fluid.

What materials are available for these square pipe flanges?

We supply marine-grade carbon steel, stainless steel 316L, and duplex stainless steel. Each material offers different levels of corrosion resistance and mechanical strength to suit the operating environment.

Do you provide material certification for marine use?

Yes, we can supply material test certificates (EN 10204 3.1) and other necessary documentation upon request to assist with class approvals and marine surveys.

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