Alloy Pipe Fittings

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Metracore Alloys Private Limited manufactures and supplies Alloy Pipe Fittings to fabricators, EPC contractors and plant maintenance teams across India and export markets. Our range falls within the chromium-molybdenum family covered by ASTM A234, sourced from reputable mills and checked for tensile strength, hardness, and dimensional accuracy.

Alloy Steel Pipe Fittings hold the same internal pressure as the pipe they join. They turn the line, open branch connections, step the bore up or down and seal off dead ends. Chromium from 1.00 to 10.00% and molybdenum from 0.44 to 1.13% give these components their advantage: oxidation resistance at red heat, plus creep strength that carbon steel surrenders above 400°C. Refineries, ethylene crackers, boiler houses and fertiliser plants specify Alloy Fittings for that reason. Construction and general manufacturing draw on the lower grades for hot oil duty.

Butt weld sizes follow the NPS 1/2 to 48 coverage of ASME B16.9, and forged fittings run NPS 1/8 to 4 under ASME B16.11. Mill test certificates traceable to the heat number travel with every consignment.

Why Choose Metracore Alloys Private Limited for Alloy Pipe Fittings?

Buyers react to us as an Alloy Pipe Fittings manufacturer and supplier for stock grades and as a sourcing partner for made-to-print work. Metracore Alloys Private Limited covers flanges, forgings, fasteners, and fittings, so a piping package ships as one consignment instead of four.

Every supply carries a mill test certificate traceable to the heat number, reported against the ordered grade. Dimensional inspection happens before packing, and export orders ship in seaworthy crates with full documentation.

Send your line list with grade, size, schedule and connection type for a quotation.

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Table of Content

Alloy Pipe Fittings Specifications

The table covers material, grades, types, sizes, schedules, connections, standards, manufacturing route, finish and testing.

Alloy Pipe Fittings Types

Reach out to Metracore Alloys Private Limited for reliable Alloy Pipe Fittings

Alloy Pipe Fittings Grades

Grade

Six ASTM A234 grades cover most requirements, separated mainly by chromium content.

ASTM A234 WP1 carries 0.44 to 0.65% molybdenum with no chromium. Steam lines and moderately elevated-temperature piping use it.
ASTM A234 WP5 holds 4.0 to 6.0% chromium with 0.44 to 0.65% molybdenum, chosen in crude units against sulphidic corrosion.
ASTM A234 WP9 raises chromium to 8.0 to 10.0% and molybdenum to 0.90 to 1.10%, holding strength where WP5 thins.
ASTM A234 WP11 runs 1.00 to 1.50% chromium and 0.44 to 0.65% molybdenum, in Classes 1, 2 and 3. Refinery and power plant piping take up most of the volume.
ASTM A234 WP22 is the 2.25Cr-1Mo grade: 1.90 to 2.60% chromium, 0.87 to 1.13% molybdenum. Main steam and hot reheat lines run on it.
ASTM A234 WP91 combines 8.0 to 9.5% chromium with vanadium at 0.18 to 0.25%. Supercritical boiler piping near 600°C needs it.

Chrome-moly grades aren’t worth the premium on ambient water or air service, where carbon steel WPB costs less.

Alloy Pipe Fittings Standards

Five standards govern most alloy fitting supply, and the right one follows from the forming route.

ASME B16.9 covers wrought butt-weld fittings, NPS 1/2 to 48.
ASME B16.11 covers forged socket-weld and threaded fittings, NPS 1/8 to 4.
ASTM A234 fixes chemistry, heat treatment and mechanical properties.
ASME B16.28 applies to short-radius elbows and return bends.
ASTM A420 governs low-temperature grades such as WPL6, not the Cr-Mo family.

MSS SP-43 suits lightweight corrosion-resistant fittings and rarely applies to chrome-moly work, while EN 10253-2 takes over on European specifications. Under ASTM A960, the Alloy Pipe Fittings Manufacturer marks each item with grade, size and heat number. Service conditions decide which standard the order names.

Alloy Pipe Fittings Sizes

Butt weld alloy fittings cover NPS 1/2 to 48, or DN 15 to DN 1200. Wall thickness follows the matching pipe schedule, SCH 10 to SCH XXS, under ASME B36.10M. Outside diameter tracks the connecting pipe, so an NPS 6 elbow measures 168.3 mm OD at every schedule. Forged fittings carry a class rating instead: Class 2000 to 6000 threaded, Class 3000 to 9000 socket weld. Tolerances hold to the applicable product standard.

Alloy Pipe Fittings Connection Types

Three connection options cover the alloy fittings we supply.

Butt Weld. Bevelled ends at 37.5° join the pipe with a full penetration weld. Process, power and header piping use this connection because the joint accepts radiography.
Socket Weld. Socket ends take the pipe into a bored recess, with a 1.6 mm gap left before welding for expansion. Small-bore pressure lines at NPS 2 and below rely on them.
Threaded. NPT or BSP profiles are made without hot work. Utility lines, drains and instrument connections use them where the specification permits a screwed joint.

Manufacturing Process of Alloy Pipe Fittings

Applications of Alloy Pipe Fittings

Exporter, Manufacturer & Supplier of Alloy Pipe Fittings in various grades and sizes.

FAQs

What Are Alloy Pipe Fittings?

Alloy pipe fittings are pressure-containing components made from chromium-molybdenum steel. They connect runs, redirect flow, branch lines, change bore size and terminate ends.

Which Grades Are Commonly Used for Alloy Pipe Fittings?

ASTM A234 WP11, WP22 and WP91 account for most orders. WP1, WP5 and WP9 cover the rest.

Where Are Alloy Pipe Fittings Used?

Refineries, petrochemical complexes, power stations, fertiliser plants and chemical units install them on hot pressure lines.

What Types of Alloy Pipe Fittings Are Available?

Elbows, tees, reducers, crosses, couplings, caps and unions make up the list. Forged, butt-welded and socket-welded constructions cover the connections.

Which Standards Apply to Alloy Pipe Fittings?

ASTM A234 governs the material. ASME B16.9 sets butt weld dimensions, ASME B16.11 covers forged types, and ASME B16.28 handles short-radius elbows.

How Do I Select the Right Alloy Pipe Fittings?

Start with design temperature and pressure, since those fix the grade. Size, schedule, media and connection type follow next.

Can Alloy Pipe Fittings Be Exported Internationally?

Yes. Export orders ship in seaworthy crates with full documentation, and every supply carries a mill test certificate traceable to the heat number.

How Do I Request a Quotation for Alloy Pipe Fittings?

Send your line list with grade, size, schedule and connection type, and our team will quote against it.