Stainless Steel 304L Flanges

MTC Certified A182 F304L WNRF Flange Manufacturer in India For Tough Environments

As a leading Stainless Steel 304L Flanges Manufacturer in India, Mortec Manufacturing Co. forges certified UNS S30403 billets. Carbon remains below 0.030%, providing excellent weldability and corrosion resistance. Low carbon content minimizes chromium carbide precipitation during welding applications. Every heat undergoes solution annealing at 1040°C minimum before rapid liquid quenching. This ensures compliance with ASTM A182 requirements for F304L forgings.

We manufacture Stainless Steel 304L Flanges to ASME B16.5 up to NPS 24. Larger sizes from NPS 26 to 60 are available under ASME B16.47. RF, FF, and RTJ facings, along with smooth or serrated finishes, are available. NPT, BSPT, BSPP threading and custom drilling are also offered. Weld Neck, Slip-On, and Blind flanges are available from Class 150 through 2500. Orders ship within three to five working days with PMI, hydrostatic, and EN 10204 certificates.

Stainless Steel 304L Flanges Manufacturer in India offering customized dimensions, flange types and material specifications.

Class 150 slip-on raised face dimensions to ASME B16.5, higher classes and larger bores are issued with your quotation.

Send your NPS and class and we return a same-day works price on 304L flanges – start your enquiry here.

Stainless Steel 304L Flanges Supplier in India, offering multiple flange types with flexible sizes and ready stock.

ASTM A182 F304L Weld Neck Flange

ASME B16.5 • ½″–24″

• Tapered hub carries bending load away from the weld
• First choice on cyclic and high-purity lines

SS 304L Slip On Flange

ASME B16.5 • Class 150–600

• Slides over pipe, filleted inside and out
• Cuts fit-up time on site erection work

ASME SA 182 F304L Puddle Flange

Custom • Water-Stop Collar

• Cast into concrete to block seepage paths
• Common on tank farm and basement penetrations

UNS S30403 Exhaust Flanges

To Drawing • Plate Or Forged

• Profile-cut to your gasket and stud layout
• Also supplied as WNR 1.4307 Header Flanges

SUS 304L Threaded Flanges

ASME B16.5 • ≤4″ NB

• Bolted assembly with no hot work
• Used where welding permits are restricted

INOX 304L Lap Joint Flange

With Stub End • Class 150–300

• Rotates freely for fast bolt-hole alignment
• Backing ring never contacts the process fluid

Weld neck flanges carry a tapered hub and a bevelled weld end, so the bore is machined to suit the pipe schedule you nominate.

We prepare country-specific documents for Kenya, South Africa, UAE, and Canada.

304L contains no molybdenum, making chloride and temperature limits critical during selection.

The two systems are not interchangeable, and incorrect selection can prevent proper 304L flange bolt-up onsite.

ASME B16.5 groups A182 F304L with F316L and F317L, with lower pressure ratings.

Choose the correct grade, class, bore, and flange specifications.

Face style is dictated by the gasket and the mating equipment, so confirm it at enquiry stage rather than after machining.

Understand sensitization, prevention, and testing requirements for welded flanges.

From billet to boxed flange, every step below is carried out at our own Mumbai units under one quality system.

Sectors that specify 304L most often, and the reason the low-carbon grade wins the job.

Documented, crated and released against the conformity route each destination requires.

Africa & America

Mombasa, Kenya

Nairobi, Kenya

Durban, SA

Cape Town, SA

Kampala, Uganda

Toronto, Canada

Veracruz, Mexico

Pick the routing that suits your project calendar, the firm date is locked once size, class and facing are agreed.

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