Manufacturer, Supplier & Exporter of PTFE Lined Steel Pipes

PTFE Lined Steel Pipes are highly corrosion-resistant piping solutions designed for use in industries handling aggressive chemicals, acids, and high-purity fluids. Riddhi Siddhi Impex, a renowned manufacturer and domestic supplier of industrial piping materials in India, offers premium quality PTFE (Polytetrafluoroethylene) Lined Steel Pipes that combine the mechanical strength of carbon or stainless steel with the superior chemical resistance of PTFE lining. These pipes are an ideal choice for transferring corrosive and toxic fluids in chemical plants, pharmaceuticals, power generation, and water treatment facilities...

The PTFE lining inside the steel pipes provides an inert, non-stick surface that ensures no chemical reaction or contamination occurs during fluid transportation. Riddhi Siddhi Impex manufactures these pipes using advanced extrusion and fusion bonding techniques to achieve perfect adhesion between the steel substrate and the PTFE liner. The company ensures that every PTFE-lined steel pipe meets strict international standards such as ASTM F1545, DIN 2874, and ISO 10931. This results in products that deliver exceptional durability, even under continuous exposure to acids, alkalis, solvents, and high-temperature fluids..

As a leading PTFE Lined Steel Pipe manufacturer in India, Riddhi Siddhi Impex focuses on precision engineering, consistent quality, and timely supply. These pipes are fabricated using seamless or welded carbon steel or stainless steel bases and then internally lined with PTFE liners of uniform thickness. The PTFE layer provides excellent dielectric properties, low friction, and thermal stability, making it suitable for high-performance industrial applications. The pipes can withstand temperatures ranging from -20°C to +200°C, ensuring reliability in both cryogenic and high-temperature services..

Riddhi Siddhi Impex supplies PTFE Lined Steel Pipes across major Indian domestic markets including Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, and Rajpipla. Their vast domestic distribution network ensures quick availability and technical support to clients across diverse industrial zones..

The key advantages of PTFE Lined Pipes include their ability to handle highly reactive chemicals such as hydrochloric acid, sulfuric acid, nitric acid, and caustic soda without corrosion or leakage. The lining also resists scaling, contamination, and product buildup, ensuring smooth and consistent fluid flow. These characteristics make them the preferred choice for chemical processing plants, fertilizer manufacturing, food and beverage production, and pharmaceutical industries that demand hygienic and inert flow channels..

PP Coated Carbon Steel Pipes

Specification

Product Name	PP Coated Carbon Steel Pipes
Manufacturer	Riddhi Siddhi Impex
Base Material	Carbon Steel (ASTM A106 / A53 / API 5L)
Coating Material	Polypropylene (PP) – Single or 3-Layer (3LPP)
Standard	ISO 21809-1 / DIN 30678 / ASTM / API
Size Range	1/2” NB to 48” NB
Wall Thickness	Sch 20 to Sch 160 / XXS
Length	Single Random, Double Random, or Cut Lengths
Coating Thickness	1.8 mm to 4.5 mm (Customizable)
Pipe Ends	Plain End (PE), Beveled End (BE), or Threaded
Form	Seamless, Welded, ERW, or LSAW
Applications	Oil & Gas Pipelines, Water Supply, Chemical Transport, Marine Projects

Chemical Composition (Base Carbon 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 PP Coating)
Coating Adhesion	Strong Adhesion per ISO 21809-1

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	Standard Specification for Carbon Steel Pipe for High-Temperature and Pressure Service
API 5L	Specification for Line Pipe
ISO 21809-1	External Polypropylene Coatings for Buried or Submerged Pipelines
DIN 30678	3-Layer Polypropylene Coating for Steel Pipes

Other Types of Coated Steel Pipes

Type	Description
3LPE Coated Pipes	Three-layer polyethylene coated pipes for enhanced corrosion protection
FBE Coated Pipes	Fusion Bonded Epoxy coated pipes for superior adhesion and corrosion resistance
Internal Epoxy Coated Pipes	Epoxy-coated internal surfaces for smooth fluid flow
PE Coated Pipes	Polyethylene-coated carbon steel pipes for underground applications

Riddhi Siddhi Impex’s PTFE-lined piping systems undergo rigorous quality control checks such as spark testing, hydrostatic testing, and adhesion testing to guarantee leak-proof performance. The company maintains strict dimensional accuracy and complies with both Indian and international piping standards. Available in a wide range of diameters, wall thicknesses, and lengths, these pipes can also be custom-fabricated to meet specific client requirements, including flanged, threaded, or welded end connections.

Frequently Asked Questions (FAQs)

Q1: What are the advantages of PTFE Lined Steel Pipes?

A1: PTFE Lined Pipes offer outstanding resistance to corrosive chemicals, high temperatures, and contamination. They ensure long-term leak-proof performance and low maintenance.

Q2: In which industries are PTFE Lined Pipes commonly used?

A2: They are widely used in chemical plants, water treatment, pharmaceuticals, fertilizers, food processing, and petrochemical industries.

Q3: What sizes and configurations are available?

A3: Riddhi Siddhi Impex provides PTFE Lined Pipes from 15 NB to 600 NB, in flanged, threaded, or welded end configurations, customized to client requirements.

Q4: Where does Riddhi Siddhi Impex supply PTFE Lined Steel Pipes?

A4: We supply PTFE Lined Steel Pipes across all major Indian cities including Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, and many more.