TECHNICAL REFERENCE

Materials and standards,
read in context.

A standard identifies a technical framework—not the complete purchase requirement. Grade, dimensions, supplementary tests, certification and project specifications still matter.

PIPE

Common references

ASTM A106 — seamless carbon steel pipe
ASTM A333 — low-temperature pipe
API 5L — line pipe
ASTM A312 — stainless steel pipe
EN 10216 / EN 10217 — pressure-purpose tube

Steel pipe scope ↗

FITTINGS

Dimensions & materials

ASME B16.9 — factory-made butt-weld fittings
ASME B16.11 — forged fittings
ASTM A234 / A420 / A403 — material families

Fittings scope ↗

FLANGES

Ratings & facing

ASME B16.5 — pipe flanges and fittings
ASME B16.47 — large-diameter flanges
ASTM A105 / A350 / A182 — common forgings

Flange scope ↗

DOCUMENTS

Inspection evidence

EN 10204 type 2.2, 3.1 and 3.2
Inspection and test plans
NDT, dimensional and coating reports
Final manufacturing record books

Certification guide ↗

Important

Standards are revised and project requirements vary. Purchase descriptions should identify the applicable edition and all supplementary requirements. Twelve Mill confirms requirements against the enquiry and proposed manufacturing route.

PROJECT ENQUIRY

Put the package in motion.

Share the project scope, specification and destination. We will structure the questions that matter before sourcing begins.