Hastelloy C276 Flanges

ASTM B564 UNS N10276 Weld Neck Flange Manufacturer In India Machined Up To NPS 24 Inch

Mortec Manufacturing Co is a working Hastelloy C276 Flanges Manufacturer in India. Every ASTM B564 flange is cut from certified UNS N10276 stock at our own Mumbai plant. Each blank carries its heat number before it reaches the lathe. Finished forgings are solution annealed near 1121°C and quenched fast. That step keeps the nickel-molybdenum matrix free of grain-boundary carbides. The result is an alloy that stands up to wet chlorine gas, hypochlorite and chlorine dioxide. Very few materials cope with all three. We also machine WNR 2.4819 Orifice Flanges and UNS N10276 Plate Flanges to drawing.

Machining follows ASME B16.5, ASME B16.47 Series A and B, and MSS SP-44. Facing is offered in RF, FF and RTJ with smooth or serrated finish. Bore sizes are drilled to match your isometric. As a direct Hastelloy C276 Flanges Supplier In India we carry the grade in stock. Alloy C276 Threaded Flange sizes also move ex-stock. Weld Neck, Slip-On, Blind and Socket Weld types cover Class 150 through 1500. Dispatch runs three to five working days. Orders include PMI readings and, on request, ASTM G28 intergranular test data. EN 10204 3.1 or 3.2 certificates accompany every consignment.

Ask for your Hastelloy C276 Flanges quote and the mill paperwork, test reports and export documents come bundled.

Hastelloy Flanges sizes below cover what we machine in-house; fastest-moving ones sit in stock.

Hastelloy Flanges outside diameter, bolt circle and drilling follow ASME B16.5 for the alloy.

ASME B16.5 places Hastelloy Flanges N10276 forgings in Group 3.8 for ratings.

Weld neck bore is cut to the schedule of the mating pipe. Wall thickness values below follow ASME B36.19M.

Nickel alloys sit heavier than steel, so Hastelloy C276 Flanges outweigh a similar drawing.

Hastelloy C276 Flanges Manufacturer in India machining Long Neck, Lap Joint, Puddle and Orifice types beside the standard range.

SB564 N10276 Weld Neck Flange

ASME B16.5 • ½″–24″

• Tapered hub takes a full penetration weld
• First choice for cyclic and high-pressure duty

ASTM B564 N10276 Slip On Flange

ASME B16.5 • Class 150–600

• Slides over the pipe, quicker to fit up
• Keeps fabrication cost down on process lines

B564 N10276 Blind Flange

ASME B16.5 • All Classes

• Closes off pipe ends and vessel nozzles
• Solid disc, so no bore machining needed

ASTM B564 UNS N10276 Socket Weld Flange

ASME B16.5 • ≤4″ NB

• Pipe drops into a machined socket
• Single fillet weld suits small-bore runs

Alloy C276 Threaded Flange

ASME B16.5 • ≤4″ NB

• NPT or BSP thread, no welding at site
• Preferred where hot work is restricted

Nickel C276 Lap Joint Flange

ASME B16.5 • With Stub End

• Spins freely so bolt holes line up fast
• Built for lines opened up for cleaning

Nicrofer® 5716 Puddle Flange

Made To Drawing • Wall Penetration

• Collar cast into concrete for a water stop
• Used on tank and basement wall crossings

WNR 2.4819 Orifice Flange

Class 300–900 • Metering

• Jack screws and tappings for meter runs
• Supplied as a paired set with the plate

Heavy molybdenum with tungsten and very low carbon is what separates C276 from ordinary stainless.

ASTM B564 sets these room-temperature minimums for solution annealed UNS N10276 forgings.

Hastelloy Flanges chemistry carries a different name in each material standard.

This is the duty buyers in Gulf desalination, South African pulp mills and Kenyan water schemes ask about first.

Coal-fired scrubber retrofits in South Africa and Canadian sulphur plants keep this grade in demand.

Sour gas work in UAE and Kenyan fields turns on Hastelloy Flanges paperwork.

C276 is quoted per kilogram of finished flange, so these five points decide what you actually pay.

All three are nickel-chromium-molybdenum grades. The split comes down to which acid you are fighting.

These plants keep coming back for Hastelloy Flanges, and here is why.

Ex-stock C276 inventory reaches buyers across these countries and beyond.

Export Markets

UAE

Turkey

Canada

UK

Saudi Arabia

Singapore

USA

Mexico

Thailand

Italy

Netherlands

Germany

Philippines

Malaysia

Uganda

Indonesia

South Africa

Vietnam

Venezuela

C276 is a nickel-base alloy, so it is classified under Chapter 75 and not the steel fittings heading.

After we match your size, class and quantity against the rack, here is the timeline you can plan around.

The questions buyers put to our desk most often before releasing an order.