Ace Alloys LLP

IBR alloy steel elbows meet stringent Indian Boiler Regulations (IBR) for high-pressure steam and boiler applications. Manufacturers like Ace Alloys LLP produce these fittings in grades such as ASTM A234 WP5, WP9, WP11, and WP91 for superior strength in elevated temperatures.​
Material GradesCommon IBR-approved alloy steels include WP1, WP5, WP9, WP11, WP12, WP22, and WP91, offering creep resistance up to 600°C. These elbows feature precise chemistry with chromium, molybdenum, and vanadium for oxidation and corrosion resistance. Ace Alloys LLP certifies them with IBR Form III C and NDT reports.​
SpecificationsAvailable in seamless (up to 24" NB) or welded construction (up to 48" NB), sizes range from 1/2" to 48" NB in SCH 10 to XXS. Angles include 30°, 45°, 60°, 90°, with long radius (1.5D) or short radius (1D) bends per ASME B16.9. Pressure ratings suit 150-2500 LBS classes.

Mild steel butt weld caps are seamless or welded end closures made from low-carbon mild steel, used to permanently seal pipe ends in low-pressure industrial systems like water distribution or construction piping. They feature beveled ends for full-penetration butt welding and follow ASME B16.9 dimensions, complementing prior carbon steel pipe caps, socket weld unions, concentric reducers, non-IBR flanges, and mild steel elbows.​

Key Features

Domed or elliptical shape provides pressure resistance up to 3000 PSI; cost-effective alternative to stainless or alloy variants for non-corrosive service.​

Specifications

Material equivalent to ASTM A234 WPB; sizes 1/2"-24" NPS, schedules SCH 40/80 standard.​

SS 304L butt weld fittings are low-carbon austenitic stainless steel components welded directly to pipes for seamless, high-strength connections in corrosive environments like chemical processing and food industries.​

Types Available

Common types include long/short radius elbows (90°/45°), equal/reducing tees, concentric/eccentric reducers, end caps, crosses, stub ends, and bends, produced seamless up to 24" or welded to 72" NB.​

Key Grades and Standards

Grades cover WP304L, WP316L per ASTM A403/ASME SA403 and ASME B16.9/B16.28/MSS SP-43, in SCH 10S-XXS schedules for thin-wall applications up to Class 2500 pressures.​

Dimensions Overview

Sizes range 1/2"-48" NB; example reducing tee dimensions: 2" (center-to-end 76mm), 4" (102mm), 12" (203mm); caps follow pipe OD with heights from 38mm (2") to 343mm (48").​

SS 321 end caps are stabilized austenitic stainless steel buttweld fittings used to seal pipe ends in high-temperature applications like aerospace, heat exchangers, and chemical processing where carbide precipitation resistance is critical.​

Material Composition

ASTM A403 WP321 grade contains up to 0.08% carbon, ≤2.00% manganese, ≤0.75% silicon, 17.0-19.0% chromium, 9.0-12.0% nickel, and 0.25-0.50% titanium for stabilization against intergranular corrosion.​

Mechanical Properties

These caps offer minimum tensile strength of 515 MPa, yield strength of 205 MPa, and 35% elongation, suitable for continuous service up to 925°C and intermittent to 870°C.​

Dimensions and Standards

Per ASME B16.9, sizes range 1/2"-48" NB in SCH 10S-XXS (e.g., 1": OD 33.4mm, height 38mm, 0.14kg; 4": OD 114.3mm, height 64mm, 1.4kg; 12": OD 323.8mm, height 152mm).​

Stainless steel equal tees are T-shaped buttweld or forged fittings with three openings of identical size, used for creating symmetrical branch connections in chemical, food processing, pharmaceutical, and industrial piping systems.​

Material Grades

Common grades include SS 304/304L (18Cr-8Ni), 316/316L (16Cr-12Ni-2Mo), and specialized alloys like 321, produced per ASTM A403/ASME SA403 standards.​

Mechanical Properties

These tees offer minimum tensile strength of 515 MPa, yield strength of 205 MPa, and 35% elongation across grades, suitable for Class 150-2500 pressures and temperatures up to 800-870°C.​

Dimensions and Standards

Per ASME B16.9, sizes range 1/2"-48" NB in SCH 10S-XXS; key dimensions: 2" (OD 60.3mm, C-to-end 64mm); 6" (168.3mm, 143mm); 12" (323.9mm, 254mm); available seamless or welded.​

Pipe end caps are butt-weld fittings used to seal the open end of a pipe, providing a permanent, leak-proof closure in piping systems for maintenance, pressure testing, or termination. They differ from blind flanges by welding directly onto the pipe rather than bolting, making them ideal for high-pressure applications in industries like oil & gas, chemicals, and water treatment.​

Key Features

• Typically available in stainless steel (SS 304/316), carbon steel (A234 WPB), or alloy steel, matching reducers, flanges, tees, and weldolets in the same systems.​

• Conform to ASME B16.9 standards with sizes from 1/2" to 48" NPS and schedules SCH 10 to XXS.​

Specifications

Domed or flat shapes ensure pressure retention up to 3000 PSI, with beveled ends for welding. They support waterproofing in hydraulic/pneumatic setups.​

Alloy Steel Butt Weld Fittings are high-performance pipe fittings used to connect, branch, or redirect pipelines in high-pressure, high-temperature, and corrosive environments. Manufactured from alloy steel, these fittings offer excellent strength, durability, and resistance to heat, corrosion, and oxidation, making them ideal for critical industrial applications.

These fittings are available in various types, including elbows, tees, reducers, caps, and crosses, and are designed with butt weld ends that allow full-penetration welding to the connected pipes, ensuring strong, leak-proof joints. They are manufactured according to standards such as ASTM A234, ASME B16.9, and MSS SP-75, ensuring dimensional accuracy, mechanical integrity, and reliable performance under severe conditions.

Alloy steel butt weld fittings are widely used in oil and gas pipelines, petrochemical plants, refineries, power generation facilities, chemical processing units, and industrial piping systems. Their superior mechanical properties, resistance to thermal and chemical stresses, and long service life make them a preferred choice for safe, efficient, and durable pipeline networks.

Stainless Steel Duplex Flanges are high-strength fittings made from duplex stainless steel grades like UNS S31803, S32205 (2205), or S32750 (2507), combining austenitic and ferritic microstructures for superior corrosion resistance and mechanical properties.​

Material Specifications

These flanges meet ASTM A182 standards for forged or rolled alloy-steel pipe flanges, primarily grades F51 (S31803/S32205) and F53 (S32750). Chemical composition features ~22% chromium, 5-6% nickel, 3% molybdenum, nitrogen for pitting resistance, with PREN values exceeding 35-40 for chloride environments.​

Key Properties

Duplex flanges offer tensile strength of 620-860 MPa, yield strength ≥450 MPa, excellent resistance to stress corrosion cracking, and fatigue strength twice that of 316L stainless steel. They withstand temperatures from -50°C to 300°C and suit high-pressure applications up to Class 2500.​

Dimensions Overview

Dimensions follow ASME B16.5 (1/2"-24") or B16.47 (larger sizes), with types including weld neck, slip-on, blind, socket weld, threaded, and lap joint.

ASTM A420 Grade WPL6 Butt Weld Fittings are low‑temperature carbon steel pipe fittings designed for high‑integrity welded connections in pressure piping systems. These fittings are manufactured under the ASTM A420 / ASME SA420 specification and are especially suited for applications where toughness and weldability at low temperatures are essential — such as steam lines, petrochemical plants, refineries, and power generation systems. They are available in both seamless and welded construction and conform to international dimensional standards like ASME B16.9, ASME B16.28, and MSS‑SP‑43. The most common fitting types include elbows, tees, reducers, and caps, with a wide range of sizes and wall thicknesses to match corresponding pipe schedules. ASTM A420 WPL6 material offers good mechanical strength and impact resistance at low service temperatures, making these fittings reliable for critical welded piping networks.

Download PDF — A420 WPL6 Fittings Specification
You can download a detailed specification sheet covering ASTM A420 WPL6 buttweld pipe fittings (including elbows, tees, reducers, and caps) below:

 

Stainless steel ERW fittings are welded pipe fittings manufactured from electric resistance welded (ERW) stainless steel pipes or plates, offering cost-effective alternatives to seamless fittings for moderate-pressure applications. Common types include elbows, tees, reducers, and caps in grades like SS 304/316, suitable for chemical, food, and water systems.​

Specifications

Produced per ASTM A403/A312 standards with sizes from 1/8" to 24" NPS, wall thicknesses Sch 10-160. ERW construction features a longitudinal weld seam, pressure-rated to Class 300# typically, with tolerances matching ASME B16.9 dimensions.​

Dimensions

A 4" ERW elbow follows standard 114.3 mm OD with Sch 40 at 6.02 mm thickness; tees maintain center-to-end proportions like 152 mm for 90° LR versions. Weights approximate seamless equivalents within 5-10%.​