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Tandom

The building blocks of global trade.

hello@tandom.ai

Proud to partner with

Microsoft for Startups

NVIDIA

Inception Program

Products

  • Tariff Calculator
  • AD/CVD Intelligence
  • HTS Classification
  • Document Intelligence
  • Entry Filing
  • Excel Plugin
  • Email Plugin

Catalogs

  • AD/CVD Catalog
  • HTS Catalog
  • Pending Investigations Directory
  • Rate Change Feed

Developers

  • API
  • AI Agent Workflows
  • MCP Connector
  • API Reference
  • API Pricing
  • API Changelog

Resources

  • Resource Center
  • Guides
  • Roadmap

Company & Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Acceptable Use

© 2026 Fintora Technologies, Inc. d/b/a Tandom. All rights reserved.

AD/CVD Catalog

Browse the full AD/CVD universe by HTS, case number, country, or product description.

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Type

930 orders

Page 1 of 47

AD

A-570-935

🇨🇳CNCompanion: C-570-936

Circular Welded Carbon Quality Steel Line Pipe from China

Current rate

Effective

Nov 10, 2010

Source

FR E8-9361

Why this rate

Case-wide rate on file: . Company-specific rates may differ — apply the lookup by entering a manufacturer or exporter on the full query page. See FR E8-9361 for the authoritative determination.

Scope text

The merchandise covered by the Orders is circular welded carbon-quality steel pipe of a kind used for oil and gas pipelines (welded line pipe), not more than 406.4 mm (16 inches) in outside diameter, regardless of wall thickness, length, surface finish, end finish or stenciling. The term ``carbon quality steel'' includes both carbon steel and carbon steel mixed with small amounts of alloying elements that may exceed the individual weight limits for non-alloy steels imposed in the Harmonized Tariff Schedule of the United States (HTSUS). Specifically, the term ``carbon quality'' includes products in which (1) iron predominates by weight over each of the other contained elements, (2) the carbon content is 2 percent or less by weight and (3) none of the elements listed below exceeds the quantity by weight respectively indicated: (i) 2.00 percent of manganese, (ii) 2.25 percent of silicon, (iii) 1.00 percent of copper, (iv) 0.50 percent of aluminum, (v) 1.25 percent of chromium, (vi) 0.30 percent of cobalt, (vii) 0.40 percent of lead, (viii) 1.25 percent of nickel, (ix) 0.30 percent of tungsten, (x) 0.012 percent of boron, (xi) 0.50 percent of molybdenum, (xii) 0.15 percent of niobium, (xiii) 0.41 percent of titanium, (xiv) 0.15 percent of vanadium, or (xv) 0.15 percent of zirconium. Welded line pipe is normally produced to specifications published by the American Petroleum Institute (API) (or comparable foreign specifications) including API A-25, 5LA, 5LB, and X grades from 42 and above, and/or any other proprietary grades or non-graded material. Nevertheless, all pipe meeting the physical description set forth above that is of a kind used in oil and gas pipelines, including all multiple-stenciled pipe with an API welded line pipe stencil is covered by the scope of the Orders. Excluded from the scope are pipes of a kind used for oil and gas pipelines that are multiple-stenciled to a standard and/or structural specification and have one or more of the following characteristics: Is 32 feet in length or less; is less than 2.0 inches (50 mm) in outside diameter; has a galvanized and/or painted surface finish; or has a threaded and/or coupled end finish. (The term ``painted'' does not include coatings to inhibit rust in transit, such as varnish, but includes coatings such as polyester.)

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On this page

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  • Scope text
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Directory view — shows what AD/CVD orders exist for a given HTS / country / product. For entry-specific exposure, cash-deposit amounts, and a CBP-ready scope determination PDF, use the duty calculator on the landing page.