Reducer Fittings - Starlight Tubes
Starlight Tubes

Reducer Fittings

Premium quality reducer fittings for diameter transitions

Manufacturing StandardASTM A403, ASTM A234, ASME B16.9, B16.11, B16.28
Dimensional Range1/8" to 48", Schedule 5S to XXS
Wall Schedules / RatingSCH 10S to XXS / Custom
Material Inspection & MTCEN 10204 3.1 Certified
Product Overview

Reducer Fittings

Premium quality reducer fittings for connecting pipes of different diameters

Mill Certified Stock

Premium Reducer Fittings

Starlight Tubes supplies high-quality reducer fittings designed for connecting pipes of different diameters. Our reducers provide smooth flow transitions and are available in concentric and eccentric configurations for various piping system requirements.

Available in multiple connection types including butt weld, socket weld, and threaded, our reducer fittings are manufactured from premium materials and undergo rigorous quality testing to ensure leak-proof performance and compliance with industry standards.

Technical Specifications

ASTM / ASME Compliant
Materials
SS 304/316/321, Carbon Steel, Alloy Steel, Inconel, Monel, Hastelloy
Types
Concentric Reducer, Eccentric Reducer
Size Range
1/8" to 48", Schedule 5S to XXS
Standards
ASTM A403, ASTM A234, ASME B16.9, B16.11, B16.28
Traceability: EN 10204 3.1 MTC100% PMI Inspected
Metallurgical Specifications

Technical Specifications — Concentric & Eccentric Reducers

Material standards and mechanical requirements for ASME B16.9 buttweld reducers

EN 10204 3.1 Certified
MaterialASTM SpecificationGradesType
Carbon SteelASTM A234WPB, WPCConcentric & Eccentric
Stainless SteelASTM A403WP304L, WP316L, WP321, 904LConcentric & Eccentric
Low Temp SteelASTM A420WPL6Concentric & Eccentric
Alloy SteelASTM A234WP11, WP22, WP91Concentric & Eccentric
Full heat number traceability stamped per length
Custom dimensions & chemical variations supplied upon RFQ
Why Choose Starlight Tubes

Your Trusted Reducer Fittings Supplier

Starlight Tubes delivers premium reducer fittings with unmatched quality and reliability for diameter transitions in piping systems.

ISO 9001:2015 Certified
Full Material Traceability
Concentric & Eccentric Options
Global Export Network
Bulk Order Discounts
Expert Technical Guidance
Request Custom Sizing / Quotation
Technical Clarifications

Frequently Asked Questions on Reducer Fittings

Key engineering, tolerance, and international compliance answers from our metallurgical quality desk.

Concentric reducers have a common centerline, maintaining the pipe center axis. Eccentric reducers have offset centerlines with one flat side, used in horizontal pipelines to prevent air pockets (flat side up) or allow drainage (flat side down).

Fast Track Commercial Desk

Request Project Quotation for Reducer Fittings

Submit your required sizes, wall thicknesses, material grades, and total tonnage. Our technical sales engineers respond with complete mill pricing and lead times within 24 hours.

EN 10204 3.1 MTC Traceability
Third-Party Inspection Ready (TUV, DNV, BV)
Proven Industrial Track Record

Precision Manufacturing at Global Scale

Certified manufacturing, rigorous batch inspection, and reliable export logistics powering critical infrastructure projects across 6 continents.

100,000+
Metric Tons Shipped
To global energy & industrial sectors
60+
Export Destinations
USA, GCC, Europe & Asia-Pacific
ISO 9001
Certified Quality System
EN 10204 3.1 & 3.2 Traceability
99.9%
On-Time Dispatch Rate
Direct from Nhava Sheva (JNPT) port
100%
Hydrostatic Tested
Pressure tested up to 500 Bar