GB Flange

GB Flange

We are top notch GB 2501 Flange Manufacturer in India

The GB standard is a Chinese grade flange. A GB Flange can be designed using different alloys and steel materials. These flanges play a pivotal role in connecting piping components of different shapes in the system while providing support to the module during vigorous movement of high pressure and temperature media. The GB 2501 Flange is a corrosion-resistant marine grade that is designed with good strength. These flange types can be readily welded or bolted into the system. A gb2506 flange is generally a lap joint module designed with a two-component assembly. These flanges are designed to work in pressure classes from PN 10 and above. The gb/t 2506 flange is a recommended national standard in China. They are not mandatory, but these flanges have been manufactured with extra care to prevent any unforeseen conditions in difficult environments. The versatile gb/t flange is designed by our esteemed workers with the best raw materials and latest technology by our renowned workers. These flanges are widely seen in water systems, shipbuilding equipment, natural gas systems. Electric power, piping lines, oilfields, etc. They can be easily customized in different shapes and sizes to meet all the requirements of our clients.

Supplier of GB 9119 Weld Neck Flange at factory price in Mumbai

The GB 9119 Weld Neck Flange is designed with a long protruding hub or a face and is generally but-welded in place. These flanges are widely seen in piping applications to provide stability to the movement of high-pressure fluids and gases in the system. A GB Slip On Hub Flange is designed with a low-profile head. These flanges are one of the most common flange types in the industry. These flanges are slid on the pipe and welded in place using one or more fillet welds. They are designed to work in low-pressure and temperature applications.

Stockist and Distributor of 100% radiographed GB2506 Threaded Flanges in Mumbai

GB Flange

GB Flange


GB 2501 Flange

GB 2501 Flange


GB 9119 Weld Neck Flange

GB 9119 Weld Neck Flange



GB Flange Specifications

Manufacturer of GB Flanges
ANSI Pressure Class 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2500LBS, GB 2501 Flanges
Meets Standards SABS 1123, GOST 12821-80, GOST 33259, API, ANSI, ASME, BS, EN, JIS, MSS, UNI, ASTM, API, ISO, DIN, SP, GB 9119 Weld Neck Flanges
EN 1092-1/ EN 1092-2 GB 2501 flanges standard
10Bar, 6Bar, 25Bar, 16Bar, 40Bar, GB Slip On Hub Flanges
BS Standards BS1560, BS4504, BS4504, BS10, gb2506 flanges
Japanese Industrial Standards - JIS B2220 30K, 10K, 5K, 40K, 20K, 16K, 63K, gb/t 2506 flanges
DIN Standards DIN 2642, DIN 2503, DIN 2630, DIN 2576, DIN 2629, DIN 2628, DIN 2502, DIN 2656, DIN 2632, DIN 2633, DIN 2633, DIN 2631, DIN 2628, DIN 2655, DIN 2636, DIN 2638, DIN 2635, DIN 2635, DIN 2576, DIN 2627, DIN 2673, 2631, DIN 2634, DIN 2637, DIN 2634, DIN 2527, DIN 2641, DIN 2637, DIN 2638, DIN 2566, DIN 2573, DIN 2573, DIN 2527, DIN 2566, DIN 2565, DIN 2636, gb/t flanges
Wall Thickness Sch10, Sch20, Sch30, Sch60, STD, Sch40, EXT-Hvy, Sch80, Sch100, Sch120, Sch140, Sch160, XX-Hvy, JIS GB Flanges
Types Forged, Threaded, Screwed, Plate, Welded, GB 9119 Flanges
Most common GB flanges processes followed by manufacturers
  • Cutting
  • Casting
  • Open die forging
  • Closed die forging
  • Roll forging
We also supply
  • Sealing Gaskets
  • Ring Joint Gasket
  • Flanges Bolts as Required
Flange faces
  • Flat (FF)
  • Ring joint (RTJ)
  • Raised (RF)
  • Lap joint
  • Tongue and groove (T&G)
  • Male and female (M&F)
GB Flanges Standard
  • ASME B16.5 (Most popular)
  • ASME B16.47 Series B & A
  • ASME B16.48
  • GOST
  • BS4504
DIN Standards
  • DIN 2501
  • DIN 2633
  • DIN 2627
  • DIN 2642
  • DIN 2635
  • DIN 2543
  • DIN 2527
PN Rating PN10, PN40, PN6, PN25, PN16, PN64, GB Loose Flanges
Quality Inspection
  • EN 10204/3.1B MTC
  • 100% Radiography Test Report for any Cracks or any incomplete penetration
  • Raw Materials Certificate
  • Third Party Inspection Report
Value Added Services
  • CNC Machining
  • Large Diameter GB 9119 Flanges
  • Customised Gb/t flanges Flanges

GB Slip On Hub Flange Price in India

Description Price in US $ Price in INR Recent supply location
DIN ISO GB Standard Steel Mounting Flanges PN10 PN16 US $ 4.97 per kg INR 379 per Kg Armenia
gb flanges pn10 dn600 US $ 12.44 per kg INR 949.30 per Kg Chile
DIN ISO GB Dn1500 3" #150 Forged Stainless Steel Blind Flanges US $ 72 per kg INR 1,581.38 per Kg Malaysia
DN10 DN2000 JIS DIN AISI GB Standard SS Plate Flanges US $ 25.90 per kg INR 1977 per Kg Hungary
GB 304 stainless steel flanges US $ 12.43 per kg INR 949 per Kg Oman

Different types of GB Loose Flange

gb/t 2506 flange

gb/t 2506 flange

gb2506 flange

gb2506 flange

gb/t flange

gb/t flange

GB 9119 Flange

GB 9119 Flange

JIS GB Flanges

JIS GB Flanges

GB Loose Flange

GB Loose Flange


GB 2501 Flanges Dimension Chart

NPS 16kg=1.6MPa Inch Nominal Pipe Size 10kg=1.0MPa
Outer Diameter distance of bolts Diameter of bolts Holes Thickness Outer Diameter Diameter of bolts Holes Thickness
DN10 90 60 14 4 14 3/8 DN10 50 60 14 4 14
DN15 95 65 14 4 14 1/2 DN15 59 65 14 4 14
DN20 105 75 14 4 16 3/4 DN20 105 75 14 4 16
DN25 115 85 14 4 16 1 DN25 115 85 14 4 16
DN32 140 100 18 4 18 11/4 DN32 140 100 18 4 18
DN40 150 110 18 4 18 11/2 DN40 150 110 18 4 18
DN50 165 125 18 4 20 2 DN50 165 125 18 4 20
DN65 185 145 18 4 20 21/2 DN65 185 145 18 4 20
DN80 200 160 18 8 20 3 DN80 200 160 18 8 20
DN100 220 180 18 8 22 31/2 DN100 220 180 18 8 22
DN125 250 210 18 8 22 4 DN125 250 210 18 8 22
DN150 285 240 22 8 24 5 DN150 285 240 22 8 24
DN200 340 295 22 8 26 6 DN200 340 295 22 8 24
DN250 405 355 26 12 29 8 DN250 395 350 22 12 26
DN300 460 410 26 12 32 10 DN300 445 400 22 12 28
DN350 520 470 26 16 35 12 DN350 505 460 22 16 30
DN400 580 525 30 16 38 14 DN400 565 515 26 16 32
DN450 640 585 30 20 42 16 DN450 615 565 26 20 35
DN500 715 650 33 20 46 18 DN500 670 620 26 20 38
DN600 840 770 36 20 52 20 DN600 780 725 26 20 42

Buy GB 2501 Blind Flange at Unbeatable Prices in Asia

GB 9119 Flanges Sizes

Nominal Pipe Size No. of Bolts Pressure
40mm 4 1.6MPa
50mm 4 1.6MPa
63mm 4 1.6MPa
75mm 4 1.6MPa
90mm 8-12 1.6MPa
110mm 8-12 1.6MPa
125mm 8-12 1.6MPa
160mm 8-12 1.6MPa
180mm 8-12 1.6MPa
200mm 8-12 1.0MPa/1.6MPa
225mm 8-12 1.0MPa/1.6MPa
250mm 8-12 1.0MPa/1.6MPa
280mm 8-12 1.0MPa/1.6MPa
315mm 8-12 1.0MPa/1.6MPa
355mm 16 1.0MPa/1.6MPa
400mm 16 1.0MPa/1.6MPa
450mm 20 1.0MPa/1.6MPa
500mm 20 1.0MPa/1.6MPa
560mm 20 1.0MPa
630mm 20 1.0MPa

View GB2506 flange Pressure Rating, Refer GB/t flanges Torque Chart

A Supplier by choice of GB Flange in following countries

Strategic Oil and Gas Services- Oman

Strategic Oil and Gas Services- Oman

Doha South Sewage Treatment Works- Qatar

Doha South Sewage Treatment Works- Qatar

Woodside Petroleum Limited- Australia

Woodside Petroleum Limited- Australia


Pertamina - Indonesia

Pertamina - Indonesia

Duqm Refinery and Petrochemical Industries- Oman

Duqm Refinery and Petrochemical Industries- Oman

Alaska LNG Project- United States of America

Alaska LNG Project- United States of America