CSMS 6021404·Trade policy·January 21, 2026·View on csms.cbp.gov ↗

Initiation of scope inquiry - antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China (A-570-064; C-570-065; Third-Country Case Numbers: A-565-991; C-565-992)

Plain-English explanation

CSMS 6021404 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on January 21, 2026. It carries the official CBP guidance brokers and importers must follow for the topic — "Initiation of scope inquiry - antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China (A-570-064; C-570-065; Third-Country Case Numbers: A-565-991; C-565-992)". It links to 4 AD/CVD cases in Tandom's catalog. CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Linked AD/CVD cases(4)

Cases referenced or affected by this CSMS message

A-565-991 A-570-064 C-565-992 C-570-065

Message body

Full text as published by U.S. Customs and Border Protection

1. On 01/05/2026, Commerce initiated a scope inquiry on whether cut plate flanges imported by API International Inc. (API) are covered by the scope of the antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China (A-570-064; C-570-065). The cut plate flanges imported by API are for 18 models (identified by API part number) of standard flanges, original equipment manufacturer flanges, exhaust flanges, and light weight irrigate flanges that are manufactured using a plate cutting method. Each flange model is produced using stainless steel that conforms with ASTM A240 (Grade 304L or 316L, as appropriate) and are not manufacturing using the forged production method. The list of models covered by the scope inquiry is as follows: 1a. Flat Ring Flanges SPF0600-D-4L (6.0 CLASS D S/O 304L SS FLG @ 0.688 THK) SPF0800-D-4L (8.0 CLASS D S/O 304L SS FLG @ 0.688 THK) SPF1600-D-4L (16.0 CLASS D 304L SS FLG @ 1.00 THK) SPF2000-D-4L (20.0 CLASS D 304L SS FLG @ 1.125 THK) SPF0600-E-16L (6.0 CLASS E S/O 316L@ 1.313 THK) SPF2400-B-16L (24.0 CLASS B S/O FLG 316L @ 0.75 THK) SPF2400-D-16L (24.0 CLASS D 316L SS FLG @ 1.125 THK) SPF0600-D-16L (6.0 CLASS D 316L SS FLG @ 0.688 THK) SPF1000-D-4L (10.0 CLASS D 304L SS FLG @ 0.688 THK) SPF1600-D-16L (16.0 CLASS D 316L SS FLG @ 1.00 THK) SPF1800-D-4L (18.0 CLASS D 304L SS FLG @ 1.062 THK) 1b. Flat Blind Flanges SPFBL2400-D-16L (24.0 BLIND CLASS D FLG 1.661 THK 316L) 1c. Flat Ring Flanges SDN0150-PN16-16 (150mm PN-16 DIN S/O FLG 316L) 1d. OEM Flanges 7010270 (4.0 CLASS D S/O FLG 304 O RING GRV OB 5.57) SPF0300-4L (3.0 CLASS D 304L SS FLG) SPF0300-16L e (3.0 CLASS D 316L SS FLG) 1e. Exhaust Flanges SPFE0600C-16L (8.0 X 6.125 CUMMINS FLG 316L) 1f. Light Weight Irrigation Flange SPFH0300-16L (3.0 x 1/2 316L SS FLG) 2. Continue to suspend liquidation of entries of cut plate flanges imported by API International Inc. that are described in paragraph 1 of this message and that are already subject to the suspension of liquidation under the antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China at the cash deposit rate(s) in effect on the date of entry. Such entries should not be liquidated until specific liquidation instructions are issued. 3. In accordance with 19 CFR 351.225(l)(5), this instruction does not affect or otherwise limit CBP's independent authority to take any additional action with respect to the suspension of liquidation or related measures. 4. If there are any questions by the importing public regarding this message, please contact the Call Center for the Office of AD/CVD Operations, Enforcement and Compliance, International Trade Administration, U.S. Department of Commerce, at (202) 482-0984. CBP ports should submit their inquiries through authorized CBP channels only. (This message was generated by OP:TT.) 5. There are no restrictions on the release of this information. Alexander Amdur

Frequently asked questions

What is CSMS 6021404?

CSMS 6021404 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Initiation of scope inquiry - antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China (A-570-064; C-570-065; Third-Country Case Numbers: A-565-991; C-565-992)". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 6021404 published?

CBP published CSMS 6021404 on January 21, 2026. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Which AD/CVD cases does CSMS 6021404 affect?

CSMS 6021404 references 4 AD/CVD cases (A-565-991, A-570-064, C-565-992, C-570-065). The links on this page take you to each linked order with its current scope, rates, and history.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

Learn more

Tandom guides relevant to CBP CSMS messages

Trade compliance APIs in broker workflows

Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.

Open resource

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.

Open resource

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource

CSMS 6021404·Trade policy·January 21, 2026·View on csms.cbp.gov ↗

Initiation of scope inquiry - antidumping and countervailing duty orders on stainless steel flanges from the People's Republic of China (A-570-064; C-570-065; Third-Country Case Numbers: A-565-991; C-565-992)

Plain-English explanation

Linked AD/CVD cases(4)

Cases referenced or affected by this CSMS message

A-565-991 A-570-064 C-565-992 C-570-065

Message body

Full text as published by U.S. Customs and Border Protection

Frequently asked questions

What is CSMS 6021404?

When was CSMS 6021404 published?

CBP published CSMS 6021404 on January 21, 2026. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Which AD/CVD cases does CSMS 6021404 affect?

CSMS 6021404 references 4 AD/CVD cases (A-565-991, A-570-064, C-565-992, C-570-065). The links on this page take you to each linked order with its current scope, rates, and history.

Is the CBP CSMS the legally binding instruction?

Learn more

Tandom guides relevant to CBP CSMS messages

Trade compliance APIs in broker workflows

Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.

Open resource

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.

Open resource

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource