About Nippen Tubes - Stainless Steel Pipes & Pipe Fittings Supplier in India

Based in India, Nippen Tubes currently lists 15 active products across its catalogue. The company’s offerings fall under HS code families 7307 (pipe fittings and flanges), 7318 (bolts), 7304 (tubes and pipes), 7207 (carbon and alloy steel), 7505 (nickel and copper alloys) and 7222 (steel bars). Its top categories include stainless steel pipes & pipe fittings, steel, bolts, steel bars, steel pipes, flanges and frames. The product mix reflects a focus on austenitic stainless steel grades and carbon/low‑alloy steel components used in process and construction sectors.

The catalogue details items such as Pipe Elbow, Stainless Steel Bends, Pipe Tee and Pipe Reducer, all classified under HS 7307.23 and supplied in grades 304, 304L and 316/316L. Additional entries include Bolts (HS 7318.15) in carbon steel, stainless steel or alloy steel, Outlet Fittings (HS 7307.99), Nippen Tubes (HS 7304.11) and Seamless or ERW Pipes (HS 7304.19). The list also covers forged flanges, duplex steel butt‑welded fittings, stainless‑duplex steel bars and nickel‑copper alloys, each mapped to the appropriate HS code.

Product Range and Specialties of Nippen Tubes

The pipe fittings catalogue (HS 7307.23) aligns with ASTM A312/A403 specifications for seamless and welded stainless steel components. Common pressure ratings are PN10 to PN40 (150 - 400 bar) and dimensions follow the NPT or BSP standards depending on the target market. Stainless steel grades 304/304L provide corrosion resistance in general‑purpose environments, while 316/316L are preferred for chloride‑bearing applications. Bolts listed under HS 7318.15 typically meet ASTM A193 (for high‑temperature service) or ASTM A325/A490 for structural uses, with tensile strengths ranging from 800 MPa to 1 200 MPa.

Steel bars (HS 7222.20) are normally supplied to ASTM A276 or EN 10088 standards, with diameters from 6 mm up to 200 mm and carbon equivalents dictating mechanical properties. Flanges (HS 7307.93) are produced to ASTM A182 or EN 1092‑1, offering class ratings from 150 lb to 2500 lb. Nickel and copper alloys such as UNS 2200, 2201 and Inconel 825 are common in high‑temperature or corrosive process lines and are usually shipped in coil or bar form per ASTM B575.

Trade and Export Information - Nippen Tubes

India ranks among the top global exporters of stainless steel pipework, with major shipment destinations in the Middle East, Europe and Southeast Asia. HS chapter 73 products are subject to customs inspections that verify material grade, heat‑treatment certificates and compliance with the International Standards Organization (ISO) 9001 quality system. For pressure‑equipment exports, the European Union often requires CE marking and conformity to the Pressure Equipment Directive (PED).

Typical packaging for pipe fittings and tubes includes wooden crates, steel drums or bulk bundles wrapped in protective film, sized to fit 20‑ft or 40‑ft containers. Incoterms such as FOB Mumbai or CIF Dubai are frequently used. Buyers usually request mill test reports, chemical analysis certificates and, where applicable, third‑party inspection reports from agencies like SGS or Bureau Veritas to satisfy import regulations.

Sourcing from Nippen Tubes - Buyer Guidance

When sourcing from Nippen Tubes, purchasers should ask for the latest mill test certificate (MTC) that confirms chemical composition and mechanical properties against ASTM A312, A403 or A193 as appropriate. A compliance statement for ISO 9001 or other quality management systems should be obtained if required by the buyer’s internal policy.

Samples of critical fittings (e.g., elbows, tees) are advisable before placing bulk orders, especially to verify dimensions against NPT/BSP standards and surface finish. Verify that the HS code on the commercial invoice matches the product description, and confirm the material grade (304, 316, 316L, etc.) before finalizing the contract. Requesting a third‑party inspection report can further reduce risk of non‑conformity.

What HS codes are used for your stainless steel pipe fittings?

They are classified under HS 7307.23 for elbows, bends, tees and reducers, and HS 7307.99 for outlet fittings and expansion bends.

Which material grades do you offer for pipe elbows and tees?

Grades 304, 304L, 316 and 316L austenitic stainless steel are listed, matching ASTM A312 specifications.

What certifications should a buyer request for these products?

Buyers typically request an ISO 9001 quality system certificate, a mill test certificate, and, for pressure‑rated items, compliance with the relevant ASTM standards or CE marking where applicable.

What are the typical dimensions and pressure ratings for your stainless steel fittings?

Standard dimensions follow NPT or BSP thread sizes from ½‑inch to 6‑inch, with pressure ratings commonly ranging from PN10 (150 bar) to PN40 (400 bar).

How are the bolts packaged and what standards do they meet?

Bolts under HS 7318.15 are supplied in bulk bags or wooden crates, conforming to ASTM A193 (high‑temperature) or ASTM A325/A490 (structural) with tensile strengths between 800 MPa and 1 200 MPa.

What documentation is needed for nickel and copper alloy products?

A mill test report showing UNS 2200, 2201 or 8825 composition, along with any required material safety data sheet (MSDS) and an ISO 9001 certificate.

What are the common shipping terms and container sizes for your steel pipes?

Shipments are usually arranged on 20‑ft or 40‑ft containers under FOB Mumbai or CIF destination, with pipes bundled in wooden crates and protected by anti‑rust coating.