Products Description

Our ASME B16.5 Carbon Steel Slip On Flanges are workhorses for industrial piping systems where reliability matters. Made from ASTM A105 material (0.25-0.35% carbon content), they hit that sweet spot between strength and weldability. You get minimum 485 MPa tensile strength - enough for Class 300 systems up to 500°F (260°C) per ASME B31.3.

The slip-on design lets you slide them over pipes quickly, cutting installation time by 40% versus weld necks. We've got third-party test reports showing Charpy impact values of 20J at -20°C (ASTM A370) - crucial for cold climate operations. Compared to stainless options, these carbon steel flanges save you 35-60% on material costs when corrosion isn't your main worry.

Factory Processing

Every Carbon Steel Slip On Flange gets the full treatment:
It is hot-forged from continuous-cast billets, which reduces internal porosity compared to scrap metal.

It is also normalized at 1,650 degrees Fahrenheit (900 degrees Celsius) to eliminate stresses and prevent deformation during welding.

CNC-machined faces with RMS 125-250 finish (beats ASME's 500 requirement)

100% hydrotested at 1.5x rated pressure (we catch leaks others miss)

Our secret sauce?

We micro-bevel the bore edges - stops gasket pinching during bolt-up. Saves you callbacks.

Production Strength

We run 3 dedicated Slip On Flange lines with:

15,000-piece monthly capacity (covers those rush refinery orders)

200+ in-house forging dies (DN15 to DN600 all covered)

Real-time PMI testing (handheld XRF guns verify chemistry on the spot)

Barcode-tracked MTCs with heat numbers (no certification mixups)

Got urgent needs?

Our yard stocks 8,000+ ASME B16.5 Slip On Flanges ready for immediate shipping - check live inventory 24/7.

Factory Commitment

For wholesale partners like you:

Volume perks: Orders >500 pieces get 7% discount + free NDE reports
On-time guarantee: 95% of orders ship in 10 working days (or we cover air freight difference)
Zero-leak promise: Fail a hydrotest? We replace entire batch + pay for retesting
Export-ready: Full CE/PED packages included - clears customs smoothly.

Material Performance Comparison

Property	ASTM A105	Q235	ASTM A36
Tensile Strength	485-655 MPa	375-500 MPa	400-550 MPa
Yield Strength	≥250 MPa	≥235 MPa	≥250 MPa
Elongation	≥22%	≥26%	≥20%
Temperature Range	-29°C~427°C	-20°C~300°C	-29°C~343°C
Corrosion Resistance	General (requires coating)	General (requires coating)	General (requires coating)
Weldability	Excellent	Good	Excellent

Service and Customization

Service Type	Details
Standard Compliance	Customizable to ANSI B16.5, GB/T 9119, JIS B2220; pressure classes (Class 150/300/600)
Material Customization	Supports specified grades (e.g., A105N, Q345B); provides Material Test Reports (MTR)
Surface Treatment	Options: galvanizing, anti-rust painting, sandblasting (enhances corrosion resistance)
Special Processing	Non-standard sizes, special shapes, seal face types (FF/RF/MF); custom thickness
Logistics & After-sales	International shipping, installation guidance, 12-month warranty, quality dispute resolution

Product Application and Selection

Industry/Scenario	Recommended Pressure Class	Suitable Media	Key Selection Factors
Water Supply/Drainage Systems	Class 150	Tap water, sewage	Cost-effectiveness; Q235 recommended for low pressure
Oil/Gas Auxiliary Pipelines	Class 150-300	Fuel oil, natural gas (low pressure)	A105 preferred for better high-temperature resistance
Chemical (Non-corrosive Fluids)	Class 150-300	Neutral chemicals, coolants	Prioritize weldability; match pipe material
HVAC Systems	Class 150	Refrigerants, hot water	Lightweight design; A36 recommended for easy installation