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31 articles· Standards

S形弯管.jpgStandards
Standards

ASME B16.49 Induction Bends: Scope and Procurement Guide

ASME B16.49 covers factory-made induction bends for transportation and distribution piping (B31.4, B31.8, B31.11). It is not for process or power piping. This guide explains scope, key requirements, and procurement checks.

Sep 12, 20266 min readHebei Haihao Group
8字盲板 (2).jpgStandards
Standards

ASME B16.36 Orifice Flanges: Types and Class Boundaries

ASME B16.36 covers orifice flanges for differential pressure flow measurement. Welding-neck types span Classes 300–2500, while slip-on and threaded are limited to Class 300. This guide explains scope, procurement checks, and common pitfalls.

Sep 7, 20266 min readHebei Haihao Group
锻三通11.jpgStandards
Standards

ASME B16.11 Forged Fittings: Socket-Weld and Threaded Classes

ASME B16.11 defines Class 2000, 3000, 6000 for threaded fittings and Class 3000, 6000, 9000 for socket-weld fittings. This guide explains what these classes mean, how to specify them, and what to verify when procuring forged fittings.

Aug 23, 20266 min readHebei Haihao Group