Pipes & Piping
Your extended procurement team. We manage complete project material packages from multi-vendor sourcing and inspection coordination to logistics, documentation, and delivery as a single integrated services
Carbon steel, stainless steel, and alloy pipes sourced from qualified mills are seamless and welded, in standard and project-specific sizes, fully certified and inspection-ready.
NASQS supplies a comprehensive range of industrial pipes for power generation, oil & gas, petrochemical, infrastructure, and heavy engineering projects. We source from qualified pipe mills and manufacturers across India, China, Southeast Asia, and the Middle East ensuring every pipe meets the specified material grade, dimensional tolerance, and testing requirements.
Our piping supply covers the full spectrum: from standard carbon steel pipes for utility services to high-alloy seamless pipes for critical high-temperature and high-pressure applications. Every order is procured against project specifications, inspected at source, and delivered with complete material certification.
Product Range
| Parameter | Details |
|---|---|
| Materials | Carbon Steel (CS), Stainless Steel (SS), Alloy Steel, Duplex, Super Duplex |
| Grades | ASTM A106 Gr. B/C, A335 P5/P9/P11/P22/P91, A312 TP304/304L/316/316L/321/347, A333 Gr. 6 |
| Size Range | 1/2" NB to 24" NB (DN15 to DN600) |
| Wall Thickness | SCH 10 to SCH XXS (as per ASME B36.10 / B36.19) |
| Length | Single Random (SRL), Double Random (DRL), Cut-to-length |
| End Finish | Plain End (PE), Bevelled End (BE), Threaded |
| Applications | High-pressure steam lines, process piping, boiler tubes, heat exchanger tubes, critical service piping |
| Parameter | Details |
|---|---|
| Materials | Carbon Steel, Stainless Steel |
| Grades | ASTM A53 Gr. B, A671/A672, API 5L Gr. B/X42/X46/X52/X56/X60/X65/X70 |
| Size Range | 1/2" NB to 60" NB (DN15 to DN1500) |
| Wall Thickness | As per project specification and applicable standard |
| Weld Type | ERW (Electric Resistance Welded), LSAW (Longitudinal Submerged Arc Welded), SSAW (Spiral Submerged Arc Welded) |
| Applications | Line pipes, transmission pipelines, structural applications, water/utility services, piling |
| Parameter | Details |
|---|---|
| Standard | API 5L (PSL1 / PSL2) |
| Grades | Gr. B, X42, X46, X52, X56, X60, X65, X70 |
| Type | Seamless, ERW, LSAW, SSAW |
| Size Range | 2" to 60" (as per project requirement) |
| Coating | Bare, 3LPE, 3LPP, FBE, internal lining (as specified) |
| Applications | Oil & gas transmission, gathering lines, distribution networks, cross-country pipelines |
| Parameter | Details |
|---|---|
| Type | Pre-fabricated pipe spools, manifolds, headers, branch connections |
| Materials | CS, SS, Alloy — as per project specification |
| Fabrication | Cutting, bevelling, welding, NDE, heat treatment, surface preparation |
| Standards | ASME B31.1, B31.3, project-specific welding procedures |
| Applications | Power plant piping systems, process plant piping, modular construction |
Standards & Specifications
- ASTM A106: Seamless carbon steel pipe for high-temperature service
- ASTM A335: Seamless ferritic alloy-steel pipe for high-temperature service
- ASTM A312: Seamless, welded, and heavily cold-worked austenitic stainless steel pipes
- ASTM A333: Seamless and welded steel pipe for low-temperature service
- ASTM A671/A672: Electric-fusion-welded steel pipe for atmospheric and higher pressures
- API 5L: Line pipe for oil and gas transportation
- ASME B36.10: Welded and seamless wrought steel pipe dimensions
- ASME B36.19: Stainless steel pipe dimensions
- EN 10216/10217: Seamless/welded steel tubes for pressure purposes (European)
- DIN 2391/2448: Seamless steel tubes (German standards)
- JIS G3454/G3456: Carbon steel pipes for high-temperature/pressure service (Japanese)
Common Material Grades
| Category | Grades |
|---|---|
| Carbon Steel | A106 Gr. B, A53 Gr. B, API 5L Gr. B/X42/X52/X60/X65/X70 |
| Low-Temperature CS | A333 Gr. 6 |
| Alloy Steel | A335 P5, P9, P11, P22, P91 |
| Austenitic SS | A312 TP304, 304L, 316, 316L, 321, 347 |
| Duplex SS | ASTM A790 UNS S31803, S32205 |
| Super Duplex | ASTM A790 UNS S32750, S32760 |
How We Ensure Quality
Industries
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