Grade 5 Grade 7 Weld Neck Flange WNRF Raised Face Weld Neck ASME B16.5 Class 150

Product Specification

Payment Terms	L/C, D/P, D/A, Western Union, T/T, , MoneyGram	Supply Ability	5000 Pieces Per Month
Delivery Time	about 15-35 days for delivery,accordingly	Packaging Details	Carton, Plywood case, as per your requirement
Grade	Gr1, Gr2, Gr5, Gr7	Flange Type	PL, BL
Dimensions	DN15-DN1200	Tolerance	ISO 9001 CT8~10 or GB 12362 Precision
Grade Of Materials	Grade 5 Grade 7	Face	Raised Face
Working Temperature	-60°C~250°C	Bolt Holes	4
Diamension	All size can be customized	Technique	forged rolling
Test	UT	Technics	Forged and CNC Machined
Corrosion Resistance	High	Payment	TT and aypal
Sample	Avaliable	Brand Name	LHTi,China
Model Number	Titanium Flange	Certification	ISO9001, CE, API,etc
Place of Origin	Baoji, Shaanxi, China
High Light	ASME B16.5 Weld Neck Flange ，Grade 7 Weld Neck Flange ，Pipelines Weld Neck Flange

Grade 5 Grade 7 Weld Neck Flange WNRF Raised Face Weld Neck ASME B16.5 Class 150 for Pipelines

 

1. ASME B16.5 Titanium Weld Neck Flanges Class 150:

ASME B16.5 Standard:

Scope: ASME B16.5 covers dimensions, tolerances, materials, marking, and testing for pipe flanges and flanged fittings.

Class 150: Class 150 flanges are designed to withstand lower pressures compared to higher classes like Class 300 or 600. They are rated for pressures up to 150 pounds per square inch (psi) at ambient temperatures.

 

Titanium Grades:

Titanium Grade 5 (Ti-6Al-4V, Ti Gr5): Grade 5 titanium alloy is an alloy of titanium and aluminum. It offers excellent strength, corrosion resistance, and heat resistance, making it suitable for aerospace, marine, and chemical processing applications.

Titanium Grade 7 (Ti Gr7): As mentioned earlier, Grade 7 titanium contains palladium, which enhances its corrosion resistance in reducing and mildly oxidizing environments. It is commonly used in chemical processing and marine applications.

 

Design Features:

Weld Neck Flange (WNRF): A weld neck flange has a tapered hub and is butt-welded to a pipe. This design provides a smooth transition from pipe to flange and reduces stress concentration.

Raised Face (RF): The raised face provides a mating surface for the gasket, helping to create a seal between the flange and the adjoining pipe or fitting.

 

Applications:

Chemical Processing: These titanium weld neck flanges are suitable for chemical processing industries where resistance to corrosive chemicals and high temperatures is critical.

Aerospace: Grade 5 titanium is used in aerospace applications due to its high strength-to-weight ratio and resistance to high temperatures.

Marine: Grade 7 titanium is ideal for marine applications where corrosion resistance to seawater is essential.

 

Quality and Compliance:

Material Certifications: Manufacturers provide material certificates confirming compliance with specifications and standards, ensuring the quality and traceability of the titanium alloys used.

Testing: Flanges undergo various tests such as ultrasonic testing (UT), hydrostatic testing, and dimensional inspections to ensure they meet specified requirements and performance standards.

 

 

 

 

 

2. Titanium Material

Titanium alloys are known for their excellent corrosion resistance, especially in aggressive environments like seawater, chlorine, and acids. They also possess a high strength-to-weight ratio, making them ideal for aerospace, chemical processing, and offshore applications.

Common titanium alloys used in flanges include Grade 2 titanium (commercially pure titanium) and Grade 5 titanium (Ti-6Al-4V, an alloy with aluminum and vanadium for enhanced strength).

Titanium flanges typically offer corrosion resistance in environments where stainless steels might fail or require more costly and heavier materials.

 

 

Chemical requirements
	N	C	H	Fe	O	Al	V	Pd	Mo	Ni	Ti
Gr1	0.03	0.08	0.015	0.20	0.18	/	/	/	/	/	bal
Gr2	0.03	0.08	0.015	0.30	0.25	/	/	/	/	/	bal
Gr5	0.05	0.08	0.015	0.40	0.20	5.5~6.75	3.5~4.5	/	/	/	bal
Gr7	0.03	0.08	0.015	0.30	0.25	/	/	0.12~0.25	/	/	bal
Gr12	0.03	0.08	0.015	0.30	0.25	/	/	/	0.2~0.4	0.6~0.9	bal

 

 

 

 

3. Titanium Weck Neck Flanges Certicifates:

Titanium Weck Neck Flanges Certicifates: 

EN 10204/3.1B Certificate:

This is a standard certificate that confirms compliance with the material specification and provides chemical composition and mechanical properties of the titanium alloy used in manufacturing the flanges. It is issued by the manufacturer and verifies that the material meets the required standards.

Raw Materials Certificate:

This certificate provides details about the raw materials used in the production of the titanium flanges. It includes information such as the origin of the raw materials, their composition, and any applicable material testing results. This ensures traceability and quality control from the initial material procurement stage.

100% Ultrasonic Flaw Detection:

Ultrasonic testing (UT) is a non-destructive testing method used to detect internal and surface defects in the titanium flanges. A 100% UT coverage means that all flanges undergo thorough testing to ensure there are no defects that could compromise their structural integrity or performance.

Hydrostatic Test:

This test involves pressurizing the titanium flange with water or another liquid to a predetermined pressure level. It assesses the flange's ability to withstand pressure without leakage or deformation, ensuring it meets the specified pressure ratings and safety requirements.

Third Party Inspection Report:

This report is conducted by an independent third-party inspection agency or authority. It provides an unbiased assessment of the titanium flanges' quality, confirming compliance with applicable standards, specifications, and customer requirements. It adds credibility to the manufacturer's quality assurance processes.

 

 

 

 

4. Specification of ANSI B16.5 Class 150 Titanium Weld Neck Flange

ANSI B16.5 Class 150 Titanium Weld Neck Flange
Nom. Pipe Size	Flange Dia.	Flange Thick	Hub Dia. At Base	Raised Face Dia.	Hub Dia. at Weld Point	No. of Holes	Dia. of Bolts	Dia. Of Bolt Circle	Bore Dia.	Length Thru Hub
1/2	3-1/2	7/16	1-3/16	1-3/8	0.84	4	1/2	2-3/8	0.62	1-7/8
3/4	3-7/8	1/2	1-1/2	1-11/16	1.05	4	1/2	2-3/4	0.82	2-1/16
1	4-1/4	9/16	1-15/16	2	1.32	4	1/2	3-1/8	1.05	2-3/16
1-1/4	4-5/8	5/8	2-5/16	2-1/2	1.66	4	1/2	3-1/2	1.38	2-1/4
1-1/2	5	11/16	2-9/16	2-7/8	1.90	4	1/2	3-7/8	1.61	2-7/16
2	6	3/4	3-1/16	3-5/8	2.38	4	5/8	4-3/4	2.07	2-1/2
2-1/2	7	7/8	3-9/16	4-1/8	2.88	4	5/8	5-1/2	2.47	2-3/4
3	7-1/2	15/16	4-1/4	5	3.50	4	5/8	6	3.07	2-3/4
3-1/2	8-1/2	15/16	4-13/16	5-1/2	4.00	8	5/8	7	3.55	2-13/16
4	9	15/16	5-5/16	6-3/16	4.50	8	5/8	7-1/2	4.03	3
5	10	15/16	6-7/16	7-5/16	5.56	8	3/4	8-1/2	5.05	3-1/2
6	11	1	7-9/16	8-1/2	6.63	8	3/4	9-1/2	6.07	3-1/2
8	13-1/2	1-1/8	9-11/16	10-5/8	8.63	8	3/4	11-3/4	7.98	4
10	16	1-3/16	12	12-3/4	10.75	12	7/8	14-1/4	10.02	4
12	19	1-1/4	14-3/8	15	12.75	12	7/8	17	12.00	4-1/2
14	21	1-3/8	15-3/4	16-1/4	14.00	12	1	18-3/4	13.25	5
16	23-1/2	1-7/16	18	18-1/2	16.00	16	1	21-1/4	15.25	5
18	25	1-9/16	19-7/8	21	18.00	16	1-1/8	22-3/4	17.25	5-1/2
20	27-1/2	1-11/16	22	23	20.00	20	1-1/8	25	19.25	5-11/16
24	32	1-7/8	26-1/8	27-1/4	24.00	20	1-1/4	29-1/2	23.25	6

 

5. Grades of Titanium:

 

Titanium Grade 5 (Ti-6Al-4V):

Composition: Titanium Grade 5 is an alpha-beta alloy consisting of 90% titanium, 6% aluminum, and 4% vanadium. This composition provides a balance of properties that make it the most widely used titanium alloy.

Strength: It offers excellent strength-to-weight ratio, making it suitable for aerospace, marine, and industrial applications where lightweight strength is critical.

Corrosion Resistance: Grade 5 titanium has good corrosion resistance, although not as high as pure titanium (Grade 1). It is still highly resistant to most environments.

Temperature Resistance: It maintains its properties at elevated temperatures, making it suitable for applications in gas turbines, exhaust systems, and other high-temperature environments.

Applications: Aerospace components (airframes, jet engines), marine equipment, medical implants, automotive components, sports equipment, and industrial machinery.

 

Titanium Grade 7 (Ti-0.15Pd):

Composition: Titanium Grade 7 is a titanium alloy with 0.15% palladium added, enhancing its corrosion resistance.

Corrosion Resistance: Grade 7 titanium is highly resistant to corrosion in reducing and mildly oxidizing environments, including chlorides. It is more corrosion resistant than Grade 2 titanium.

Weldability: It offers good weldability, making it suitable for applications requiring fabrication and assembly.

Strength: Grade 7 titanium has lower strength compared to Grade 5 but is still adequate for many applications.

Applications: Chemical processing, desalination, marine environments, and other applications where superior corrosion resistance is required. It is also used in medical implants where biocompatibility and corrosion resistance are critical.

 

 

6. Titanium Weld Neck Flange Inspections

Visual Testing (VT): This involves inspecting the surface of the weld and the flange visually to detect any visible defects such as cracks, porosity, or improper weld profiles.

 

Ultrasonic Testing (UT): This technique uses high-frequency sound waves to detect internal defects within the material, such as voids, inclusions, or cracks. It's particularly useful for thicker sections of titanium welds.

 

Radiographic Testing (RT): This method uses X-rays or gamma rays to produce images of the internal structure of the weld and flange. It's effective for detecting internal defects and assessing weld quality.

 

Magnetic Particle Testing (MT): MT is used to detect surface and near-surface defects in ferromagnetic materials. However, since titanium is not ferromagnetic, this method might not be applicable unless there are magnetic materials nearby or coatings that can be magnetized.

 

Penetrant Testing/Dye Penetrant (PT): PT involves applying a dye penetrant to the surface of the weld and then removing excess dye to reveal surface-breaking defects. This method is useful for detecting small cracks, porosity, and leaks.

 

Eddy Current Testing (ET): ET uses electromagnetic induction to detect surface and near-surface defects in conductive materials like titanium. It's useful for detecting corrosion, cracks, and variations in material properties.

 

Acoustic Emission (AE): AE involves monitoring the acoustic emissions from a material under stress to detect changes indicative of defects like cracks or leaks. It can be used for both weld and base material inspection.