Class 75 Tube Angle Ring Split Flanges Manufacturer

Class 75 Tube Angle Ring Split Flanges are specially designed flanges used to connect tubes (rather than standard pipes).

Class 75 Tube Angle Ring Split Flanges Supplier

SSM specializes in manufacturing Class 75 Tube Angle Ring Split Flanges,which are specially designed flanges used to connect tubes (rather than standard pipes). Their key features include:

Pressure Rating: Class 75 (working pressure: 75 psi, approx. 5.2 bar)
Structure: Split-type design, allowing installation around existing pipelines without disassembly
Connection Method: Features an angle ring design for stable flange face support

Key Features

(1) Split-Type Structure

Consists of two semicircular rings fastened with bolts
Suitable for pipeline systems that cannot be disassembled, facilitating maintenance or retrofitting

(2) Angle Ring Design

Equipped with an L-shaped angle ring to enhance structural strength
Provides better sealing surface support to prevent deformation

(3) Applicable Tubing (Tube)

Designed specifically for tubes (precision tubes, thin-walled tubes) rather than standard pipes (thick-walled pipes)
Commonly used in instrumentation tubes, hydraulic systems, pneumatic systems, etc.

Advantages

✅ No-Disassembly Installation: Can be directly installed on existing pipelines
✅ Cost Savings: Reduces downtime and maintenance costs
✅ Flexible Adaptation: Suitable for different tube diameters (must match corresponding specifications)
✅ Reliable Sealing: Ensures leak-proof performance when paired with gaskets (e.g., PTFE, spiral-wound gaskets)

Installation Precautions

⚠ High Alignment Requirement: The two flange halves must be precisely aligned to prevent leaks
⚠ Even Bolt Tightening: Bolts must be tightened gradually in a crisscross pattern
⚠ Gasket Selection: Choose appropriate gaskets based on the medium (gas/liquid/corrosive fluid)

Typical Applications

Petrochemical Industry: Connections for instrumentation tubes, sampling tubes
Power Industry: Boiler and heat exchanger fittings
Shipbuilding: Hydraulic and fuel pipelines
Food/Pharmaceutical Industry: Connections for sanitary-grade stainless steel tubes

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SSM has significant product advantages in manufacturing forged flanges. Whether it’s quality or price, we will meet your needs.

Detailed Technical Specifications for Class 75 Tube Angle Ring Split Flanges

Material Options

Material Standard	Temperature Range	Key Characteristics	Typical Applications
ASTM A105	-29°C to 425°C	Excellent weldability and mechanical properties	General industrial piping
ASTM A350 LF2	-46°C to 340°C	Good low-temperature toughness	Low-temperature environments
ASTM A182 F304	-254°C to 816°C	Strong corrosion resistance	Chemical/food industries
ASTM A182 F316L	-254°C to 816°C	Resistant to chloride corrosion	Marine/pharmaceutical industries

Standard Dimensional Parameters

Nominal Size (NPS)	Outer Diameter (OD) mm	Bolt Hole Circle Diameter (PCD) mm	Number of Bolt Holes	Bolt Hole Diameter mm	Flange Thickness mm
1/2″	88.9	60.3	4	15.9	11.1
3/4″	98.4	69.9	4	15.9	12.7
1″	108	79.4	4	15.9	14.3
1-1/2″	127	98.4	4	19.1	15.9
2″	152	120.7	4	19.1	17.5

Pressure-Temperature Ratings

Temperature (°C)	-29 to 38	50	100	150	200
Maximum Allowable Working Pressure (psig)	75	73	70	67	62

Relevant Standards

ASME B16.5 (Flange standard, partially applicable)
ASTM A105 , ASTM A182
ANSI/ASME B16.48 (Standard related to split flanges)

FAQ

How do I properly install Split Flanges?

Critical steps:

Clean tube surface thoroughly
Align both halves precisely
Use correct gasket type for media
Tighten bolts in crisscross pattern gradually
Torque to manufacturer’s specifications

How do I select the right gasket?

Consider:
▶ Media compatibility
▶ Temperature range
▶ Pressure requirements
▶ FDA/USP requirements for sanitary apps
Common choices: PTFE, graphite, spiral-wound

What standards govern these flanges?

Primary standards:

ASME B16.5 (dimensional)
ASME B31.3 (process piping)
B16.48 (split flange specific)
PED/ASME certifications available

Can they be used for hazardous services?

Yes, when:
✓ Proper material selection
✓ Correct gasket choice
✓ Adequate bolt loading
✓ Certified for specific service
Consult engineers for critical applications