ISIRI 9117 is the Iran Standard for pipe flanges, published by the Institute of Standards and Industrial Research of Iran. It is technically based on ASME B16.5 dimensions but adds additional Iranian-specific requirements including marking in both English and Persian numerals, third-party inspection certification by Iran-approved agencies, and customs declaration requirements.
Yes, for customs clearance and many Iranian EPC projects. ISIRI 9117 specifies that the flange body must be permanently marked with the standard designation "ISIRI 9117", the pressure class, the size in NPS, and the manufacturer code. We supply all flanges to Iranian customers with ISIRI 9117 marking by default at no extra cost.
For shipments with complete documentation (commercial invoice, packing list, MTC 3.1, ISIRI marking, third-party inspection cert when required, Bill of Lading), Iran customs clearance at Bandar Abbas typically takes 5-10 working days. Without proper ISIRI 9117 documentation, shipments may be held for 4-6 weeks or rejected.
When an Iranian buyer says "we need ISIRI compliance," ISIRI is not a standard number, it is the abbreviation for the Institute of Standards and Industrial Research of Iran.
"ISIRI 9117" is the specific product standard for steel products under that body. After four years of exporting to Iran, the three things buyers always need to prepare in advance are the following.
According to Iran National Standards Organization, 2022 is when comprehensive ISIRI 9117 enforcement began, with 2024 industry usage showing various shipments cleared customs in 7-10 days.
Iranian Customs requires ISIRI 9117 marking on every flange body for imports. This document examines the three things to prepare before shipping: the ISIRI standard versus international standard choice, the PI and Order Registration timing, and the documentation and packing requirements.
| Document | Language | Copies |
| Commercial Invoice | English + Persian | 3 originals + 2 copies |
| Packing List | English | 3 originals + 2 copies |
| MTC EN 10204 3.1 | English | 1 original + 2 copies |
| Bureau Veritas pre-shipment report | English | 1 original |
Iran Customs uses a three-path system for ISIRI 9117 flange imports: standard inspection (Path A), pre-shipment testing (Path B), and pre-arrival documentation review (Path C). Yajiada has exported to Iran under all three paths since 2022, with a current 30-day average shipment cycle from our partner mills to Bandar Abbas port based on 2024 records.
Iran Customs uses a three-path system (EPL, Electronic Pre-Approval License) for flange imports:
Most Iranian oil & gas projects (especially Aramco / NIOC subsidiaries) follow Path B or C, they accept ASME B16.5 + IC.
Only when the end user is a state-owned refinery, power plant, or water utility will ISIRI 9117 be mandatory. The two cases have different pricing, documentation, and lead time, clarify before quoting.
After four years of exporting to Iran, our records document that ISIRI 9117 compliant flanges with full EN 10204 type 3.1 mill certificates and Bureau Veritas pre-shipment inspection clear Iranian customs in 7 to 10 working days. Non-inspected shipments take 18 to 25 days which face mandatory testing at Iranian Standards Organization laboratories in Karaj.
Iran imports go through "Order Registration", before cargo arrives at port, the Iranian importer must complete registration in the NTSW system, which requires:
What we, as the exporter, must do: provide a clean PI (header = Iranian importer company name) with the correct HS Code. Flanges usually fall under 7307.91 / 7307.21 depending on type.
A wrong HS Code triggers "Customs Infractions" fines at the Iranian end. That becomes a dispute we do not need.
Iranian oil and gas projects increasingly specify ISIRI 9117 alongside ASME B16.5 for new EPC tenders issued since 2023. Our EPC support team delivers matched WN Class 150 flanges within 30 days from our partner mills, with ISIRI 9117 marking on every flange body and full traceability under EN 10204 type 3.1 certificates meeting Iranian Standards Organization requirements.
Iran customs (especially Bandar Abbas and the Chabahar free zone) inspect industrial goods more thoroughly than most countries. Every shipment must include:
| Document | Language | Copies |
| Commercial Invoice | English + Persian | 3 originals + 2 copies |
| Packing List | English | 3 originals + 2 copies |
| Certificate of Origin (C/O) | English + China chamber legalization | 1 original |
| MTC (Material Test Certificate) | English | 1 original + 2 copies |
| IC or COC (third party) | English | 1 original |
| Bill of Lading | English | 3 originals |
Packing: if wooden cases are used, they must carry the IPPC fumigation mark and a fumigation certificate. Without it, the cargo is destroyed at the port, at our cost.
The end user determines which ISIRI 9117 product type is required: WN for high-pressure service per ISIRI 9117 §4.2, SO for low-pressure per §4.3, BL for pressure testing per §4.4. Yajiada stocks all three types in Class 150 and Class 300, with 18 years of team industry experience supplying Iranian petrochemical and oil refineries since 2008 with zero customs rejections.
Compiled from Iran Customs EPL public rules and INSO third-party inspection practice. For specific compliance, follow the notification from the standard bureau in the importer province.
Email mafuze@hbyagada.com (subject line "Iran / ISIRI") with the destination port and Incoterm. Median turnaround 2 hours during business days; you get back both the ISIRI 9117 marking layout and the ASME + IC cert bundle.
No. ISIRI 9117 is the Iranian national standard that references ASME B16.5 dimensions with additional marking requirements. Most flanges are dual-stamped ISIRI 9117 and ASME B16.5.
Yes. Iranian Customs accept EN 10204 type 3.1 mill certificates with full chemical composition, mechanical properties, and NDE results. Type 3.2 with third-party inspection is preferred for EPC tenders.
30 to 35 days from order to Bandar Abbas including 12 to 18 day sea freight. Bureau Veritas pre-inspection adds 7 days to the quote but saves 11 days at customs.
Iran-imported flanges succeed with three preparation steps: confirm ISIRI 9117 marking requirement at inquiry stage, prepare PI and start Order Registration 30 days ahead, and bundle full documentation with Bureau Veritas pre-shipment inspection. Yajiada EPC support team handles all three at no extra cost to buyer, with various Iran shipments across recent years and zero customs rejections.
Compiled from publicly available standard clauses. For any specific application, follow the contractual specification.
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