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Lap Joint Flanges

Name: Lap Joint Flanges
Brand: PRAVIN STEEL INDIA
Price: 250 INR
Availability: InStock

Price 250 INR/ Unit

Get a Price/Quote

MOQ : 100 Units

Lap Joint Flanges Specification

Feature
Corrosion resistant, High strength, Easy installation, Leak proof

Grade
ASTM A105, A182, F304, F316, F321, F53, F55, etc.

Application
Petrochemical, Oil & Gas, Power, Water Treatment, Shipbuilding, Pipeline, Chemical Industry

Purity
High purity materials per applicable standards

Dimension (L*W*H)
As per standard or customer drawing

Product Type
Lap Joint Flange

Material
Stainless Steel, Carbon Steel, Alloy Steel, Mild Steel

Standard
ANSI B16.5 / ASME B16.5, DIN, JIS, BS, EN, GOST, IS

Shape
Round

Surface
Rust-proof oil, Black paint, Yellow paint, Galvanized, Anti-rust coating

Connection
Welded

Technics
Forged

Pressure
150#, 300#, 600#, 900#, 1500#, 2500# (PN6-PN400)

Size
1/2 to 48 (DN15 to DN1200)

Color
Silver, Black, Yellow as per coating

End Connection
Suitable for backup ring applications

Coating Options
Electro-galvanized, Hot Dip Galvanized, Oiled, Painted

Marking
Size, material, pressure rating and heat number stamped

Corrosion Protection
Coated to prevent corrosion during transit and storage

Temperature Range
-20°C to 800°C (material dependent)

Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Standards Compliance
Complies with NACE MR0175/ISO 15156 where required

Roughness
Machined surface roughness as per standard

Tolerances
As per ASME / ANSI / DIN specifications

Packing
Wooden cases, pallets, or as customer request

Hardness
As per relevant standard requirements

Manufacturing Process
Drop forged & machined

Testing
100% inspected, hydrostatic tested if required

Lap Joint Flanges Trade Information

Minimum Order Quantity
100 Units

FOB Port
Vadodara , Gujarat

Payment Terms
Letter of Credit at Sight (Sight L/C), Cash in Advance (CID), Letter of Credit (L/C), Cash Against Delivery (CAD)

Supply Ability
1000 Units Per Month

Delivery Time
15 Days

Sample Available
Yes

Sample Policy
Contact us for information regarding our sample policy

Main Export Market(s)
Western Europe, South America, Eastern Europe, Middle East, Africa, Asia, Central America, North America, Australia

Main Domestic Market
All India

Certifications
Yes

About Lap Joint Flanges

Lap Joint Flanges are most commonly used with stub end fittings. Further, flanges are often used for applications which require frequent dismantling. These flanges are made by using sophisticated technologies under the guidance of our expert professionals and technical specifications. Our provided Lap Joint Flanges are available in different sizes and technical specifications and checked by our quality controller on different quality parameters.

Specification

Color	Silver
Usage/Application	Industrial
Material Standard	ASTM A182
Shape	Round
Surface Finish	Powder Coated

RANGE :

1/2" (15 NB) to 60" (1500NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75

SIZE :

1/2" (15NB) to 60" (1500NB)

CLASS / PRESSURE :

Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500# PN6, PN10, PN16, PN25, PN40, PN64

DIMENSION :

B16.5, BS4504, EN-1092, B16.36, B16.47, B16.48, MSS SP44

STD :

STD : ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, API, JIS, NACE etc.

FEATURES :

Dimensional accuracy, Corrosion resistance, High efficiency, Excellent finish, Durable

Stainless Steel Lap Joint Flanges :

Standard : ASTM / ASME A/SA 182
Grade : F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L

Duplex Steel Lap Joint Flanges :

Standard : ASTM / ASME A/SA 182
Grade : F 44, F 45, F51, F 53, F 55, F 60, F 61

Aluminium Lap Joint Flanges :

Standard : ASTM B247, B361.
Grade : 2024, 6061, 6063, 6101, 7075.

Titanium Lap Joint Flanges :

Standard : ASTM B381.
Grade : Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23

Carbon Steel Lap Joint Flanges :

Standard : ASTM A 105/A694/ A350 LF3/A350 LF2.
Grade : F42/46/52/56/60/65/70

Low Temperature Carbon Steel Lap Joint Flanges :

Standard : ASTM A 350 LF2 / A350 LF3

Alloy Steel Lap Joint Flanges :

Standard : ASTM A182
Grade : F1/F5/F9/F11/F22/F91

Copper Alloy Lap Joint Flanges :

Standard : ASTM / ASME SB 61 / 62 / 151 / 152.
Grade : UNS NO. C 70600 (CU -NI- 90/10), C 71500 (CU -NI- 70/30) C 71640

Nickel Alloy Weld Neck Flanges :

Standard : ASTM / ASME SB 564 / 160 / 472

Nickel 200 - UNS N02200
Nickel 201 - UNS N02201
Monel 400 - UNS N04400
Monel K500 - UNS N05500
Inconel K600 - UNS N06600
Inconel 601 - UNS N06601
Inconel 625 - UNS N06625
Inconel 800 - UNS N08800
Inconel 800H - UNS N08810
Inconel 825 - UNS N08825
Hastelloy C276 - UNS N10276
Alloy 20 - UNS N08020

Test Certificate :

Manufacturer Test Certificate as per EN 10204 / 3.1

Versatile Face Types and Material Grades

Lap joint flanges come in multiple face types: Flat Face (FF), Raised Face (RF), and Ring Type Joint (RTJ), offering compatibility with diverse piping systems. Manufactured from stainless steel, carbon steel, alloy steel, and mild steel in grades such as ASTM A105, A182, and F53, these flanges are suited for rigorous industrial use.

Superior Corrosion Protection and Coatings

To safeguard lap joint flanges during transit and storage, various surface coatings are available, including electro-galvanized, hot dip galvanized, painted, and rust-proof oil finishes. These coatings help maintain product integrity and ensure longevity even in harsh corrosive environments.

Strict Compliance and Inspection Standards

Lap joint flanges are manufactured and tested to meet industry standards like ASME B16.5, DIN, JIS, BS, EN, GOST, and ISO. Each flange undergoes rigorous inspection, including hydrostatic testing when required, and is stamped with size, material, pressure rating, and heat number for full traceability.

FAQs of Lap Joint Flanges:

Q: How are lap joint flanges manufactured and what processes are involved?

A: Lap joint flanges are produced using a drop forging process followed by precision machining. This method ensures high strength, dimensional accuracy, and compliance with ASME, ANSI, and DIN standards for tolerances and surface roughness.

Q: What coating options are available for lap joint flanges to prevent corrosion?

A: Available coatings include electro-galvanized, hot dip galvanized, oiled, and painted finishes. These protective layers prevent corrosion during transit and storage, extending the service life in aggressive environments.

Q: When should I choose a Flat Face, Raised Face, or Ring Type Joint face for my lap joint flange application?

A: Face type selection depends on your systems requirements. Flat Face (FF) is suitable for low-pressure applications, Raised Face (RF) offers better sealing for moderate pressures, while Ring Type Joint (RTJ) is ideal for high-pressure and high-temperature environments.

Q: Where can lap joint flanges be used and which industries benefit from them?

A: Lap joint flanges are employed in petrochemical, oil & gas, power generation, water treatment, shipbuilding, pipeline, and chemical industries. Their leak-proof design and ease of installation make them suitable for critical piping connections.

Q: What are the benefits of using lap joint flanges in backup ring applications?

A: Lap joint flanges are preferred for backup ring applications due to their ability to accommodate pipeline misalignment, ease of bolt alignment, and superior strength, which facilitate maintenance and reduce installation downtime.

Q: How is quality and compliance ensured for these flanges?

A: Quality is assured through 100% inspection and optional hydrostatic testing. The flanges comply with standards like ANSI B16.5, ASME B16.5, NACE MR0175/ISO 15156, and are marked for traceability with heat number, material, size, and rating.

Q: What is the temperature range supported by lap joint flanges and does it depend on material?

A: Lap joint flanges can operate from -20C to 800C, with the exact tolerance dependent on the selected material grade, such as stainless steel or alloy steel. Material choice should match the applications specific temperature and pressure requirements.

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