Manufacturer, Supplier & Exporter of Spray Polyurethane Foam (SPUF) Coated Pipes

SPUF coated pipes are specialised pipeline solutions where the pipe (often steel, carbon steel or alloy) is externally and/or internally coated or lined with spray‑applied polyurethane foam. The polyurethane foam layer acts as insulation and/or protection against corrosion, abrasion, thermal loads, and aggressive environments. In the Indian context, where soil conditions, groundwater chemistry, salinity (in coastal zones) or heavy‑use industrial pipelines prevail, SPUF coatings provide a significant performance advantage...

Riddhi Siddhi Impex, acting as a domestic supplier and manufacturer of SPUF coated pipes, serves the Indian market by offering customised coated pipe solutions designed for the specific conditions found in cities like Mumbai, Kolkata, Chennai, Kochi (coastal), as well as inland industrial hubs like Pune, Nagpur, Indore, Bhopal. Their role is important because many standard pipes may suffer in aggressive soils or where thermal insulation or abrasion protection is required, while SPUF coated pipes fill that gap..

SPUF coated pipes are particularly valuable in applications such as hot/chilled water distribution, buried pipelines requiring insulation, pre‑insulated pipelines for districts, oil & gas trunk lines, effluent discharge lines in chemical/industrial zones, and jacking/trenchless installations in urban sprawl. For example, in Gujarat’s industrial belt (Dahej, Ankleshwar, Navsari, Valsad, Rajpipla) or in coastal Visakhapatnam or Mangalore, the need for coated/insulated pipelines is higher and a domestic supplier such as Riddhi Siddhi Impex can deliver locally...

One of the key advantages of SPUF coated pipes is the combined thermal insulation and corrosion/abrasion protection. The closed‑cell foam offers low thermal conductivity and acts as a barrier to moisture/soil contact; this helps reduce heat loss (or heat gain) in buried lines and helps protect the metal substrate from corrosive environments. For Indian cities with extremes of temperature or corrosive soils—from Delhi’s heavy‑traffic zones to Chennai’s saline coast—this is a major benefit...

From a supply chain and logistics perspective, Riddhi Siddhi Impex’s capability as a domestic supplier is critical. Being able to stock or rapidly deliver SPUF coated pipes to cities like Bengaluru, Hyderabad, Ahmedabad, Surat, Vadodara, Jaipur, Lucknow, Kanpur, Agra, Varanasi ensures that regional projects are served without very long lead times or heavy import dependencies. Their local presence means installation support and maintenance can also be managed locally, which is very useful for large infrastructure or industrial clients..

Spray Polyurethane Foam (SPUF) Coated Pipes

Specification

Product Name	SPUF Coated Pipes
Manufacturer	Riddhi Siddhi Impex
Base Material	Carbon Steel / Mild Steel / Stainless Steel
Coating Material	Spray Polyurethane Foam (PU)
Standard	ISO 9001 / ASTM / API
Size Range	1/2” NB to 48” NB
Wall Thickness	Sch 20 to Sch 160 / XXS
Length	Single Random, Double Random, Cut Lengths
Pipe Ends	Plain End (PE), Beveled End (BE), Threaded
Applications	Oil & Gas Pipelines, Hot/Chilled Water Systems, District Heating, Industrial Pipelines, Buried & Submerged Pipelines

Chemical Composition (Base Steel)

Element	Content (%)
Carbon (C)	0.23 Max
Manganese (Mn)	0.30 – 1.06
Phosphorus (P)	0.05 Max
Sulfur (S)	0.045 Max
Silicon (Si)	0.10 – 0.35
Copper (Cu)	0.40 Max
Nickel (Ni)	0.40 Max
Chromium (Cr)	0.40 Max

Mechanical Properties

Property	Value
Tensile Strength	≥ 415 MPa
Yield Strength (0.2% offset)	≥ 240 MPa
Elongation	≥ 20%
Hardness	≤ 95 HRB
Impact Resistance	Excellent (Due to SPUF Coating)
Coating Adhesion	Strong adhesion per ASTM D1621
Thermal Conductivity	0.024 W/mK (approx.)

Dimension Chart (Nominal)

Nominal Pipe Size (NB)	Outside Diameter (mm)	Wall Thickness (mm)	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	Grade
ASTM	A106 Grade B / A53 Grade B
API	5L Grade B / X42 / X52
EN	EN 10216 / EN 10224
DIN	St 37.2 / St 52.3
BS	3601 / 3602

Equivalent Standards

Standard	Description
ASTM A106 / A53	Carbon Steel Pipe for High-Temperature and Pressure Service
API 5L	Specification for Line Pipe
ISO 9001	Quality Management for Manufacturing & Coating

Other Types of Coated Steel Pipes

Type	Description
PU Coated Pipes (External)	Polyurethane coating for external corrosion & thermal protection
Internal PU Coated Pipes	Polyurethane coating inside pipe for chemical resistance & smooth flow
3LPE Coated Pipes	Three-layer polyethylene coating for enhanced corrosion protection
FBE Coated Pipes	Fusion Bonded Epoxy coating for strong adhesion & corrosion resistance

In summary, SPUF coated pipes represent a high‑performance investment in pipeline infrastructure—especially suited for demanding Indian conditions—and Riddhi Siddhi Impex as a domestic supplier brings the advantage of local availability, customised specification, and support across a broad network of Indian cities. If your project is in one of the many cities listed—and requires a pipeline solution with improved insulation, abrasion/corrosion protection and long service life—then SPUF coated pipes from Riddhi Siddhi Impex are a solution worth exploring..

Frequently Asked Questions (FAQs)

Q1: What are the main applications of SPUF Coated Pipes?

A1: SPUF Coated Pipes are used in oil & gas pipelines, district heating, industrial water supply, and buried or submerged pipelines requiring insulation.

Q2: Can Riddhi Siddhi Impex provide custom pipe sizes and lengths?

A2: Yes, they supply SPUF coated pipes in custom diameters, wall thicknesses, and lengths as per project requirements.

Q3: How does SPUF coating protect pipes?

A3: SPUF coating provides excellent thermal insulation, corrosion protection, and mechanical impact resistance, extending pipe service life.

Q4: Are SPUF coated pipes suitable for coastal areas?

A4: Yes, they are ideal for coastal environments like Chennai, Kochi, or Visakhapatnam due to their resistance to saline corrosion and temperature extremes.