Flanges

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We are renowned manufacturers of flanges and pipe flanges. We utilize the latest technology & stringent quality control policy to ensure production of flanges of International standards.

Silver tube is a biggest leading company manufacturer and supplier of different kind flanges. A flange is used for connecting pipes, pumps, valves and other equipment to make a piping system. In the competitive market, the silver tube is the biggest manufacturer of flanges. We are supplier, exporter, and stockier of high-quality flanges. Pipe flanges are manufactured in different material like stainless steel, bronze, plastic, cast iron, aluminum, etc. we made all sizes of flanges and different dimensional.

Different types of flanges:
• Slip-on flanges: the raised and flat face slip-on flanges are used in quickly assembly or also used in less strict requirement in terms of length of the pipe section. We design a wide range of slip-on flanges as per the international standard.
• Weld neck flanges: we used international standard and quality for manufacturing the weld neck flanges. It is in high demand on the domestic market or export. We manufacture in a different class of flanges.
• Lap joint flanges: this flanges used in quick assembly and disassembly of pipeline section with limited working pressure we provide a wide range of this flange and used all test or standard before manufacturing.
• Blind flanges: these flanges are black flanges and no bore. It is used in quick assembly to save the cost. We also do the mill test for manufacture the blind flange.

Uses of flanges are- boiler equipment, seawater equipment, condenser, pulp, and paper industry, etc. we provide longer serviceability of flanges, and also provide deep galvanization and epoxy coating. All flanges bear high temperature and pressure.


Types of flanges:

  • Slip on flanges (SORF/SOFF)
  • Weld Neck Flanges (WNRF)
  • Blind Flanges (BLRF)
  • Threaded Flanges (THRF)
  • Screwed Flanges
  • Plate Flanges
  • Lap Joint Flanges
  • Long Weld Neck Flanges
  • Customized Flanges
  • Puddle Flanges are also available as per required Size.
Slip on flanges

Slip on flanges

Blind Flanges

Blind Flanges

Lap Joint Flanges

Lap Joint Flanges

Long Weld Neck Flanges

Long Weld Neck Flanges

Plate Flanges

Plate Flanges

Screwed Flanges

Screwed Flanges

Threaded Flanges

Threaded Flanges

Weld Neck Flanges

Weld Neck Flanges

Slip On Flanges

Slip on raised face flange (SORF) and Slip on Flat Face Flange (SOFF) are used in quick assembly to save the cost. Slip on flanges are used in less strict requirements in terms of length of pipe section. We provide wide range of Slip on flanges that are designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B
Size: ½” to 48” Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel Slip on FlangesASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Slip on FlangesASTM A105Gr. F42,46,52,56,60,65,70
Alloy Steel Slip on FlangesASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloy Slip on FlangesASTM SB564, SB160, SB472, SB162Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloy Slip on FlangesASTM SB 61 , SB62 , SB151 , SB152UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel Slip on FlangesASTM A350LF2 , LF3
Duplex Steel Slip on FlangesASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Weld Neck Flanges:

Weld Neck flanges are in high demand in export as well as domestic market and are manufactured by our unit with international quality and standards. We provide wide range of Weld Neck flanges that are designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel  Weld Neck flanges ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon SteelASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel Weld Neck flanges ASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloys Weld Neck flanges ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloy Weld Neck flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon SteelASTM A350LF2 , LF3
Duplex SteelASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Lap joint Flanges

Lap Joint flanges are used primarily when quick assembly & dissembly of pipe line section is required under limited working pressure. We provide wide range of Lap Joint flanges that are designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204/3.1B

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel Lap Joint flanges  ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Lap Joint flanges  ASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel Lap Joint flanges  ASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloy Lap Joint flanges  ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloys Lap Joint flanges  ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel Lap Joint flanges  ASTM A350LF2 , LF3
Duplex Steel Lap Joint flanges  ASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Blind Flanges (BLRF):

Blind Flanges are used in quick assembly to save the cost. These are blank flanges and have no bore. We provide wide range of Blind flanges that are designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel Blind Flanges ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Blind Flanges ASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel Blind Flanges ASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloy Blind Flanges ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloys Blind Flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel Blind Flanges ASTM A350LF2 , LF3
Duplex Steel Blind Flanges ASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Threaded Flanges:

Threaded flanges are used in special requirements to work under high temperature and pressure ensuring no welding point in the assembly. We provide wide range of Threaded flanges that are designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel Threaded flanges  ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Threaded flanges  ASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel Threaded flanges  ASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloy Threaded flanges  ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloy Threaded flanges  ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel Threaded flanges  ASTM A350LF2 , LF3
Duplex Steel Threaded flanges  ASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Long weld Neck flange:

We offer long neck weld flanges in various types to meet the demands of several engineering and process industries. These flanges are in accordance with the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE, and are offered along with mill test certificate as per EN 10204 / 3.1B.

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless SteelASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon SteelASTM A105 Gr. F42,46,52,56,60,65,70
Alloy SteelASTM A182F1,F5,F9,F11,F22,F91
Nickel AlloysASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper AlloysASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon SteelASTM A350LF2 , LF3
Duplex SteelASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Orifice Flange:

We provide wide range of orifice flanges that is designed as per the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B.

Size: ½” to 48”
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

Material of ConstructionStandardGrades
Stainless Steel orifice flanges ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel orifice flanges ASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel orifice flanges ASTM A182F1,F5,F9,F11,F22,F91
Nickel Alloys orifice flanges ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloys orifice flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel orifice flanges ASTM A350LF2 , LF3
Duplex Steel orifice flanges ASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Plate Flange:

We provide wide range of quality approved range of plate flanges that is used for connection between pipes and tubes in several industry verticals. Offered to our clients in several types like spectacle blind, slip on (SORF), blind (BLRF), lap joint, reducing, ring joint and large dia ring. These flanges are hot dip galvanized and epoxy coating for compliance with international standards like ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. We also provide these flanges with mill test certificate as per EN 10204 / 3.1B.
Size: ½” to 48&rdquo
Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#Grades:
Stainless steel plate flange
Stainless steel plate flange

  • 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H and 904L
Copper alloy plate flange
  • C 70600 (CU -NI- 90/10) - Cupro Nickel Plate Flanges
  • C 71500 (CU -NI- 70/30) - Cupro Nickel Plate Flanges
  • UNS NO. C 92200, UNS NO. C 83600, UNS NO. UNS NO C 10100, C 10200, C 10300, C 10800, C 12000, C 12200
Duplex steel plate flange
  • S 31803
  • S 32205
Alloy steel plate flange
  • ASTM SA 387 Grade 1/5/9/11/22/91
Carbon steel plate flange
  • ASTM A 36, IS 2062
Low temperature carbon steel plate flange
    • A 516 GR.70

    Reducing Flange:

    We are offering our clients with a precision engineered range of reducing flanges. Available in various types, these reducing flanges are in accordance with the international standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE. To ensure longer serviceability of these flanges, we provide them with hot dip galvanization and epoxy coating. For maximum satisfaction of our clients, we provide these flanges with mill test certificate as per EN 10204 / 3.1B.

    Size: ½” to 48”
    Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#

    Material of ConstructionStandardGrades
    Stainless Steel reducing flanges ASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
    Carbon Steel reducing flanges ASTM A105 Gr. F42,46,52,56,60,65,70
    Alloy Steel reducing flanges ASTM A182F1,F5,F9,F11,F22,F91
    Nickel Alloys reducing flanges ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
    Copper Alloys reducing flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
    Low Temperature Carbon Steel reducing flanges ASTM A350LF2 , LF3
    Duplex Steel reducing flanges ASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

    Socket weld flanges:

    Our customers can avail from us, an extensive range of SWRF - socket weld raised face flanges that is available in several types and material grades. Our flanges are in line with the standards of ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP and NACE, and are provided with a mill test certificate as per EN 10204 / 3.1B for the same.

    Material of ConstructionStandardGrades
    Stainless Steel Socket weld flangesASTM A182 , A240F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
    Carbon Steel Socket weld flangesASTM A105 Gr. F42,46,52,56,60,65,70
    Alloy Steel Socket weld flangesASTM A182F1,F5,F9,F11,F22,F91
    Nickel Alloys Socket weld flangesASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
    Copper Alloys Socket weld flangesASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
    Low Temperature Carbon Steel Socket weld flangesASTM A350LF2 , LF3
    Duplex Steel Socket weld flangesASTM A182, A240UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

    DIN Flanges

    Our quality inspected Flanges comply with DIN (Deutsches Institute for Normung) standards for manufacturing of flanges. These din flanges, din pipe flanges, stainless steel din flanges are made up of qualitative metals that provide extra-strength to the flanges. These flanges are available in accurate standard sizes; our range of DIN Flanges can be customized as per the requirements of the clients.

    Material of ConstructionGrades
    Stainless SteelF 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
    Carbon SteelGr. F42,46,52,56,60,65,70
    Alloy SteelF1,F5,F9,F11,F22,F91
    Nickel AlloysNickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
    Copper AlloysUNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
    Low Temperature Carbon SteelLF2 , LF3
    Duplex SteelUNS F 44, F 45, F51, F 53, F 55, F 60, F 61