10 10 月, 2026

Can You Produce to ASTM / EN / JIS Standards?

A purchase order can name ASTM, EN, JIS, GB or IS, and the same steel is written differently in each. The question behind “can you produce to ASTM / EN / JIS standards” is whether the mill can work to the system the buyer’s market requires.

Short answer

Mills in China commonly work to more than one standard system, and which one applies is set by the purchase order. Producing to ASTM, EN or JIS means the chemistry, the dimensions, the test methods and the certificate all follow that standard instead of GB — a documentation and testing discipline as much as a metallurgical one. The points to settle are the standard and its edition, the grade inside it, and the certificate format. Where an order must meet a particular standard, the detail is confirmed per enquiry.

The main standard systems

Standard system	Where it is used	What the buyer names
ASTM / ASME	United States and markets following US practice	The specification and the grade within it
EN	European Union and aligned markets	The EN part and the grade, plus the CE route where regulated
JIS	Japan and much of Asia	The JIS designation and the grade
GB	China and many export contracts	The GB number and the grade — the starting point
IS, AS/NZS	India, Australia and New Zealand	The national standard and the grade

ISO numbers are also common, usually for dimensions or test methods. A product can be ordered to one system and tested to another, which is why the order has to say which: the standard is what a third party uses to accept or reject the lot.

What producing to a standard covers

Producing to a standard is not one action. It commits the mill to the following:

Chemistry — the heat is made to the composition window the standard sets
Mechanical properties — tested by the standard’s method on the samples it requires
Dimensions and tolerances — nominal size, deviation and length basis come from the standard
Testing and certification — how a test is run and how often, certified and marked for traceability

What to settle in the order

Most standard disputes are created before production. Fix these points and the acceptance basis is clear:

The standard and its edition or year, because a revision can change the grade limits and the tests
The grade inside that standard, the certificate format, and whether third-party inspection is called for
The end use, which tells the mill which standard suits the duty
Confirmation of the standard against the enquiry before production

Send the product, the standard it must meet, the size, the quantity and the destination port, and the enquiry is worked against those points. See the steel product catalogue, how orders are inspected and certified, or request a quotation.

Frequently asked questions

Can a Chinese mill produce to ASTM, EN or JIS standards?

Many mills in China work to more than one standard system, and the standard is set by the purchase order. The standard, the grade and the acceptance basis must be named, because the testing and the certificate follow the standard.

What changes when an order moves from GB to ASTM or EN?

The grade designations, the test methods and the certificate change. A section ordered to GB and the same section ordered to ASTM are not automatically interchangeable.

Which standards do steel importers use most?

ASTM and EN cover the largest share of import orders, with JIS, IS and AS/NZS common in their home markets and GB as the mill’s starting point.

What certificate comes with a steel order?

Commonly a mill test certificate tracing the heat, grade and test results to the lot, often in the EN 10204 3.1 format. Third-party inspection can be arranged for an independent record.