Manufacturer, Supplier & Exporter of API 5L X46 Spool

API 5L X46 Spool is a high‑quality line‑pipe grade spool assembly engineered for use in pipelines carrying oil, gas, and water. The “X46” grade under the API 5L standard denotes its minimum yield strength, which offers a strong balance between strength, weldability, and cost‑effectiveness. Riddhi Siddhi Impex, a prominent steel fabricator in India, manufactures these spools with precision, positioning itself as a reliable API 5L X46 Spool domestic supplier for critical infrastructure projects..

Riddhi Siddhi Impex’s production facility is equipped with advanced CNC‑cutting machines, automated welding systems, and rigorous quality inspection lines. They fabricate API 5L X46 Spools in various forms including straight runs, elbows, tees, reducers, and fully customized spool builds. Each assembly undergoes hydrostatic testing, radiographic or ultrasonic NDT, and dimensional verification to ensure its integrity under pressure and fit-for-purpose compliance..

In major industrial and commercial hubs like Mumbai, Delhi, and Bengaluru (Bangalore), Riddhi Siddhi Impex’s X46 spools are in high demand for pipeline infrastructure and gas distribution systems. These cities are major centers for EPC contractors, utilities, and petrochemical players who rely on robust spool assemblies to maintain tight project schedules and ensure long-term reliability..

In Hyderabad, Chennai, and Kolkata, the demand for API 5L X46 Spools is driven by refinery expansions, petrochemical plants, and cross‑city pipeline networks. Riddhi Siddhi Impex supports these markets by delivering spool assemblies that offer consistent material quality, dimensional accuracy, and weld-ready ends suited for onsite installation...

In northern and southern sub-regions including Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, and Madurai, Riddhi Siddhi Impex plays a key role by supplying spool assemblies for process piping, city‑gas distribution, and industrial utility lines. Their fabrication facility accommodates custom spool geometries to suit the specific project isometrics of plants in these cities..

API 5L X46 Spool

Specification

Property	Details
Product Name	API 5L X46 Spool
Manufacturer	Riddhi Siddhi Impex
Material	Carbon Steel (API 5L Grade X46)
Pipe Form	Seamless, Welded (ERW / SAW)
Size Range	1/2″ NB to 48″ NB
Wall Thickness	Sch 10 to XXS (or as per project)
Length	Single Random, Double Random, Cut Lengths
End Types	Plain End, Beveled End, Threaded (if required)
Applications	Oil & Gas Transmission, Water Pipelines, Process Piping, Industrial Fluid Transport

Chemical Composition (Typical for API 5L X46)

Element	Content (%)
Carbon (C)	≤ 0.28
Manganese (Mn)	0.60 – 1.20
Phosphorus (P)	≤ 0.030
Sulfur (S)	≤ 0.030
Silicon (Si)	0.10 – 0.35
Nickel (Ni)	≤ 0.40 (if specified)
Chromium (Cr)	≤ 0.30 (if specified)
Copper (Cu)	≤ 0.40 (if specified)

Mechanical Properties

Property	Value
Minimum Yield Strength	42,000 psi (≈ 290 MPa)
Tensile Strength	60,000 – 72,000 psi (≈ 415 – 495 MPa)
Elongation	≥ 20% (in 2″ gauge length)
Hardness (Brinell / HRB)	Typically ≤ 95 HRB

Dimension Chart (Nominal)

Nominal Pipe Size (NPS)	Outside Diameter (mm)	Wall Thickness (mm)	Standard Length
1/2″	21.3	2.77	Up to ~ 12 m
1″	33.4	3.38	Up to ~ 12 m
2″	60.3	3.91	Up to ~ 12 m
4″	114.3	6.02	Up to ~ 12 m
6″	168.3	7.11	Up to ~ 12 m
10″	273.1	9.27	Up to ~ 12 m
16″	406.4	12.70	Up to ~ 12 m

Equivalent Grades

Standard	Equivalent Grade / Steel
ASTM	A106 Grade B / A53 Grade B (approximate comparable strength)
EN	EN 10216‑1: P235GH (or similar pressure-grade steel)
DIN	St 52.0 / St 52.3 (approximate)

Equivalent Standards

Standard	Description
API 5L	Specification for Line Pipe (petroleum and natural gas transmission)
ASTM A106 / A53	Carbon steel pipe for high-temperature and general service
EN 10216 / EN 10224	Seamless and welded steel tubes for pressure purposes

Other Types of Pipes / Spools

Type	Description
API 5L X42 Spool	Lower yield grade line-pipe spool for moderate pressure lines
API 5L X52 / X60 / X65 Spool	Higher strength line-pipe grades for more demanding pipeline applications
Seamless Spool	Seamless pipe spool for high-integrity, high-pressure systems
Welded Spool (ERW / SAW)	Economical welded spools suitable for long pipelines or custom fabrication

Coastal and industrial corridor locations like Kochi, Thiruvananthapuram, Mangalore, and petrochemical zones such as Dahej, Vilayat, Somnath, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla require spool assemblies that can handle high-pressure fluid transport. Riddhi Siddhi Impex’s API 5L X46 Spools are ideal here, offering strength and safety compliance combined with timely logistics and documentation support..

Frequently Asked Questions (FAQs)

Q1: What are the main applications of API 5L X46 Spool?

A1: These spools are primarily used in oil & gas transmission pipelines, water pipelines, and industrial fluid transport systems.

Q2: Can Riddhi Siddhi Impex manufacture custom spool lengths and wall thicknesses?

A2: Yes, they offer custom lengths (single random, double random, cut lengths) and wall thicknesses as per project specifications.

Q3: Is API 5L X46 Spool weldable on‑site?

A3: Yes — the steel has good weldability and is compatible with standard welding processes (SMAW, MIG, SAW) for pipeline construction.

Q4: Does Riddhi Siddhi Impex supply these spools across India?

A4: Yes, as a domestic supplier, they supply API 5L X46 Spools to major Indian cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, and more.